js常用方法封装 之 时间/字符串/类型/数字 等的相关处理

在前端项目我们常常需要操作字符串 时间格式 输入框限制输入精度和长度 ,下面对常用的方法封装

封装的好处:

1.精简代码 代码更加规范

2.多重复用,提高开发效率

3.如果出现相应的bug也能‘统一的’修改,而不需要到每个js或页面挨个修改


/**
 * @description 常用验证 如是否字符串 是否函数 是否手机号 邮箱等等 是否pc 是否IOS系统
 */
var Kencheck = {
    isString: function(o) { //是否字符串
        return Object.prototype.toString.call(o).slice(8, -1) === 'String'
    },
 
    isNumber: function(o) { //是否数字
        return Object.prototype.toString.call(o).slice(8, -1) === 'Number'
    },
 
    isBoolean: function(o) { //是否boolean
        return Object.prototype.toString.call(o).slice(8, -1) === 'Boolean'
    },
 
    isFunction: function(o) { //是否函数
        return Object.prototype.toString.call(o).slice(8, -1) === 'Function'
    },
 
    isNull: function(o) { //是否为null
        return Object.prototype.toString.call(o).slice(8, -1) === 'Null'
    },
 
    isUndefined: function(o) { //是否undefined
        return Object.prototype.toString.call(o).slice(8, -1) === 'Undefined'
    },
 
    isObj: function(o) { //是否对象
        return Object.prototype.toString.call(o).slice(8, -1) === 'Object'
    },
 
    isArray: function(o) { //是否数组
        return Object.prototype.toString.call(o).slice(8, -1) === 'Array'
    },
 
    isDate: function(o) { //是否时间
        return Object.prototype.toString.call(o).slice(8, -1) === 'Date'
    },
 
    isRegExp: function(o) { //是否正则
        return Object.prototype.toString.call(o).slice(8, -1) === 'RegExp'
    },
 
    isError: function(o) { //是否错误对象
        return Object.prototype.toString.call(o).slice(8, -1) === 'Error'
    },
 
    isSymbol: function(o) { //是否Symbol函数
        return Object.prototype.toString.call(o).slice(8, -1) === 'Symbol'
    },
 
    isPromise: function(o) { //是否Promise对象
        return Object.prototype.toString.call(o).slice(8, -1) === 'Promise'
    },
 
    isSet: function(o) { //是否Set对象
        return Object.prototype.toString.call(o).slice(8, -1) === 'Set'
    },
 
    isFalse: function(o) {
        if (!o || o === 'null' || o === 'undefined' || o === 'false' || o === 'NaN') return true
        return false
    },
 
    isTrue: function(o) {
        return !this.isFalse(o)
    },
 
    isIos: function() {
        var u = navigator.userAgent;
        if (u.indexOf('Android') > -1 || u.indexOf('Linux') > -1) { //安卓手机
            // return "Android";
            return false
        } else if (u.indexOf('iPhone') > -1) { //苹果手机
            // return "iPhone";
            return true
        } else if (u.indexOf('iPad') > -1) { //iPad
            // return "iPad";
            return false
        } else if (u.indexOf('Windows Phone') > -1) { //winphone手机
            // return "Windows Phone";
            return false
        } else {
            return false
        }
    },
 
    isPC: function() { //是否为PC端
        var userAgentInfo = navigator.userAgent;
        var Agents = ["Android", "iPhone",
            "SymbianOS", "Windows Phone",
            "iPad", "iPod"
        ];
        var flag = true;
        for (var v = 0; v < Agents.length; v++) {
            if (userAgentInfo.indexOf(Agents[v]) > 0) {
                flag = false;
                break;
            }
        }
        return flag;
    },
 
    browserType:function() {
        var userAgent = navigator.userAgent; //取得浏览器的userAgent字符串
        var isOpera = userAgent.indexOf("Opera") > -1; //判断是否Opera浏览器
        var isIE = userAgent.indexOf("compatible") > -1 && userAgent.indexOf("MSIE") > -1 && !isOpera; //判断是否IE浏览器
        var isIE11 = userAgent.indexOf('Trident') > -1 && userAgent.indexOf("rv:11.0") > -1;
        var isEdge = userAgent.indexOf("Edge") > -1 && !isIE; //判断是否IE的Edge浏览器  
        var isFF = userAgent.indexOf("Firefox") > -1; //判断是否Firefox浏览器
        var isSafari = userAgent.indexOf("Safari") > -1 && userAgent.indexOf("Chrome") == -1; //判断是否Safari浏览器
        var isChrome = userAgent.indexOf("Chrome") > -1 && userAgent.indexOf("Safari") > -1; //判断Chrome浏览器
 
        if (isIE) {
            var reIE = new RegExp("MSIE (\\d+\\.\\d+);");
            reIE.test(userAgent);
            var fIEVersion = parseFloat(RegExp["$1"]);
            if (fIEVersion == 7) return "IE7"
            else if (fIEVersion == 8) return "IE8";
            else if (fIEVersion == 9) return "IE9";
            else if (fIEVersion == 10) return "IE10";
            else return "IE7以下" //IE版本过低
        }
        if (isIE11) return 'IE11';
        if (isEdge) return "Edge";
        if (isFF) return "FF";
        if (isOpera) return "Opera";
        if (isSafari) return "Safari";
        if (isChrome) return "Chrome";
    },
 
    checkStr: function(str, type) {
        switch (type) {
            case 'phone': //手机号码
                return /^1[3|4|5|6|7|8|9][0-9]{9}$/.test(str);
            case 'tel': //座机
                return /^(0\d{2,3}-\d{7,8})(-\d{1,4})?$/.test(str);
            case 'card': //身份证
                return /(^\d{15}$)|(^\d{18}$)|(^\d{17}(\d|X|x)$)/.test(str);
            case 'pwd': //密码以字母开头,长度在6~18之间,只能包含字母、数字和下划线
                return /^[a-zA-Z]\w{5,17}$/.test(str)
            case 'postal': //邮政编码
                return /[1-9]\d{5}(?!\d)/.test(str);
            case 'QQ': //QQ号
                return /^[1-9][0-9]{4,9}$/.test(str);
            case 'email': //邮箱
                return /^[\w-]+(\.[\w-]+)*@[\w-]+(\.[\w-]+)+$/.test(str);
            case 'money': //金额(小数点2位)
                return /^\d*(?:\.\d{0,2})?$/.test(str);
            case 'URL': //网址
                return /(http|ftp|https):\/\/[\w\-_]+(\.[\w\-_]+)+([\w\-\.,@?^=%&:/~\+#]*[\w\-\@?^=%&/~\+#])?/.test(str)
            case 'IP': //IP
                return /((?:(?:25[0-5]|2[0-4]\\d|[01]?\\d?\\d)\\.){3}(?:25[0-5]|2[0-4]\\d|[01]?\\d?\\d))/.test(str);
            case 'date': //日期时间
                return /^(\d{4})\-(\d{2})\-(\d{2}) (\d{2})(?:\:\d{2}|:(\d{2}):(\d{2}))$/.test(str) ||
                    /^(\d{4})\-(\d{2})\-(\d{2})$/.test(str)
            case 'number': //数字
                return /^[0-9]$/.test(str);
            case 'english': //英文
                return /^[a-zA-Z]+$/.test(str);
            case 'chinese': //中文
                return /^[\u4E00-\u9FA5]+$/.test(str);
            case 'lower': //小写
                return /^[a-z]+$/.test(str);
            case 'upper': //大写
                return /^[A-Z]+$/.test(str);
            case 'HTML': //HTML标记
                return /<("[^"]*"|'[^']*'|[^'">])*>/.test(str);
            default:
                return true;
        }
    },
 
    // 严格的身份证校验
    isCardID: function(sId) {
        if (!/(^\d{15}$)|(^\d{17}(\d|X|x)$)/.test(sId)) {
            alert('你输入的身份证长度或格式错误')
            return false
        }
        //身份证城市
        var aCity = {
            11: "北京",
            12: "天津",
            13: "河北",
            14: "山西",
            15: "内蒙古",
            21: "辽宁",
            22: "吉林",
            23: "黑龙江",
            31: "上海",
            32: "江苏",
            33: "浙江",
            34: "安徽",
            35: "福建",
            36: "江西",
            37: "山东",
            41: "河南",
            42: "湖北",
            43: "湖南",
            44: "广东",
            45: "广西",
            46: "海南",
            50: "重庆",
            51: "四川",
            52: "贵州",
            53: "云南",
            54: "西藏",
            61: "陕西",
            62: "甘肃",
            63: "青海",
            64: "宁夏",
            65: "新疆",
            71: "台湾",
            81: "香港",
            82: "澳门",
            91: "国外"
        };
        if (!aCity[parseInt(sId.substr(0, 2))]) {
            alert('你的身份证地区非法')
            return false
        }
 
        // 出生日期验证
        var sBirthday = (sId.substr(6, 4) + "-" + Number(sId.substr(10, 2)) + "-" + Number(sId.substr(12, 2))).replace(
                /-/g, "/"),
            d = new Date(sBirthday)
        if (sBirthday != (d.getFullYear() + "/" + (d.getMonth() + 1) + "/" + d.getDate())) {
            alert('身份证上的出生日期非法')
            return false
        }
 
        // 身份证号码校验
        var sum = 0,
            weights = [7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2],
            codes = "10X98765432"
        for (var i = 0; i < sId.length - 1; i++) {
            sum += sId[i] * weights[i];
        }
        var last = codes[sum % 11]; //计算出来的最后一位身份证号码
        if (sId[sId.length - 1] != last) {
            alert('你输入的身份证号非法')
            return false
        }
 
        return true
    }
}
 
/**
 * @description 操作时间
 */
var KenDate ={
    /**
     * 格式化时间
     * 
     * @param  {time} 时间
     * @param  {cFormat} 格式
     * @return {String} 字符串
     *
     * @example formatTime('2018-1-29', '{y}/{m}/{d} {h}:{i}:{s}') // -> 2018/01/29 00:00:00
     */
    formatTime:function(time, cFormat) {
        if (arguments.length === 0) return null
        if ((time + '').length === 10) {
            time = +time * 1000
        }
    
        var format = cFormat || '{y}-{m}-{d} {h}:{i}:{s}', date
        if (typeof time === 'object') {
            date = time
        } else {
            date = new Date(time)
        }
    
        var formatObj = {
            y: date.getFullYear(),
            m: date.getMonth() + 1,
            d: date.getDate(),
            h: date.getHours(),
            i: date.getMinutes(),
            s: date.getSeconds(),
            a: date.getDay()
        }
        var time_str = format.replace(/{(y|m|d|h|i|s|a)+}/g, (result, key) => {
            var value = formatObj[key]
            if (key === 'a') return ['一', '二', '三', '四', '五', '六', '日'][value - 1]
            if (result.length > 0 && value < 10) {
                value = '0' + value
            }
            return value || 0
        })
        return time_str
    },
    
    
    /**
     * 返回指定长度的月份集合
     * 
     * @param  {time} 时间
     * @param  {len} 长度
     * @param  {direction} 方向:  1: 前几个月;  2: 后几个月;  3:前后几个月  默认 3
     * @return {Array} 数组
     * 
     * @example   getMonths('2018-1-29', 6, 1)  // ->  ["2018-1", "2017-12", "2017-11", "2017-10", "2017-9", "2017-8", "2017-7"]
     */
    getMonths:function(time, len, direction) {
        var mm = new Date(time).getMonth(),
            yy = new Date(time).getFullYear(),
            direction = isNaN(direction) ? 3 : direction,
            index = mm;
        var cutMonth = function(index) {
            if ( index <= len && index >= -len) {
                return direction === 1 ? formatPre(index).concat(cutMonth(++index)):
                    direction === 2 ? formatNext(index).concat(cutMonth(++index)):formatCurr(index).concat(cutMonth(++index))
            }
            return []
        }
        var formatNext = function(i) {
            var y = Math.floor(i/12),
                m = i%12
            return [yy+y + '-' + (m+1)]
        }
        var formatPre = function(i) {
            var y = Math.ceil(i/12),
                m = i%12
            m = m===0 ? 12 : m
            return [yy-y + '-' + (13 - m)]
        }
        var formatCurr = function(i) {
            var y = Math.floor(i/12),
                yNext = Math.ceil(i/12),
                m = i%12,
                mNext = m===0 ? 12 : m
            return [yy-yNext + '-' + (13 - mNext),yy+y + '-' + (m+1)]
        }
        // 数组去重
        var unique = function(arr) {
            if ( Array.hasOwnProperty('from') ) {
                return Array.from(new Set(arr));
            }else{
                var n = {},r=[]; 
                for(var i = 0; i < arr.length; i++){
                    if (!n[arr[i]]){
                        n[arr[i]] = true; 
                        r.push(arr[i]);
                    }
                }
                return r;
            }
        }
        return direction !== 3 ? cutMonth(index) : unique(cutMonth(index).sort(function(t1, t2){
            return new Date(t1).getTime() - new Date(t2).getTime()
        }))
    },
    
    
    
    /**
     * 返回指定长度的天数集合
     * 
     * @param  {time} 时间
     * @param  {len} 长度
     * @param  {direction} 方向: 1: 前几天;  2: 后几天;  3:前后几天  默认 3
     * @return {Array} 数组
     *
     * @example date.getDays('2018-1-29', 6) // -> ["2018-1-26", "2018-1-27", "2018-1-28", "2018-1-29", "2018-1-30", "2018-1-31", "2018-2-1"]
     */
    getDays:function(time, len, diretion) {
        var tt = new Date(time)
        var getDay = function(day) {
            var t = new Date(time)
            t.setDate(t.getDate() + day)
            var m = t.getMonth()+1
            return t.getFullYear()+'-'+m+'-'+t.getDate()
        }
        var arr = []
        if (diretion === 1) {
            for (var i = 1; i <= len; i++) {
                arr.unshift(getDay(-i))
            }
        }else if(diretion === 2) {
            for (var i = 1; i <= len; i++) {
                arr.push(getDay(i))
            }
        }else {
            for (var i = 1; i <= len; i++) {
                arr.unshift(getDay(-i))
            }
            arr.push(tt.getFullYear()+'-'+(tt.getMonth()+1)+'-'+tt.getDate())
            for (var i = 1; i <= len; i++) {
                arr.push(getDay(i))
            }
        }
        return diretion === 1 ? arr.concat([tt.getFullYear()+'-'+(tt.getMonth()+1)+'-'+tt.getDate()]) : 
            diretion === 2 ? [tt.getFullYear()+'-'+(tt.getMonth()+1)+'-'+tt.getDate()].concat(arr) : arr
    },
    
    
    /**
     * @param  {s} 秒数
     * @return {String} 字符串 
     *
     * @example formatHMS(3610) // -> 1h0m10s
     */
    formatHMS:function(s) {
        var str = ''
        if (s > 3600) {
            str = Math.floor(s/3600)+'h'+Math.floor(s%3600/60)+'m'+s%60+'s'
        }else if(s > 60) {
            str = Math.floor(s/60)+'m'+s%60+'s'
        }else{
            str = s%60+'s'
        }
        return str
    },
    
    /*获取某月有多少天*/
    getMonthOfDay:function(time) {
        var date = new Date(time)
        var year = date.getFullYear()
        var mouth = date.getMonth() + 1
        var days
    
        //当月份为二月时,根据闰年还是非闰年判断天数
        if (mouth == 2) {
            days = (year%4==0 && year%100==0 && year%400==0) || (year%4==0 && year%100!=0) ? 28 : 29
        } else if (mouth == 1 || mouth == 3 || mouth == 5 || mouth == 7 || mouth == 8 || mouth == 10 || mouth == 12) {
            //月份为:1,3,5,7,8,10,12 时,为大月.则天数为31;
            days = 31
        } else {
            //其他月份,天数为:30.
            days = 30
        }
        return days
    },
    
    /*获取某年有多少天*/
    getYearOfDay:function(time) {
        var firstDayYear = this.getFirstDayOfYear(time);
        var lastDayYear = this.getLastDayOfYear(time);
        var numSecond = (new Date(lastDayYear).getTime() - new Date(firstDayYear).getTime())/1000;
        return Math.ceil(numSecond/(24*3600));
    },
    
    /*获取某年的第一天*/
    getFirstDayOfYear:function(time) {
        var year = new Date(time).getFullYear();
        return year + "-01-01 00:00:00";
    },
    
    /*获取某年最后一天*/
    getLastDayOfYear:function(time) {
        var year = new Date(time).getFullYear();
        var dateString = year + "-12-01 00:00:00";
        var endDay = this.getMonthOfDay(dateString);
        return year + "-12-" + endDay + " 23:59:59";
    },
    
    /*获取某个日期是当年中的第几天*/
    getDayOfYear:function(time) {
        var firstDayYear = this.getFirstDayOfYear(time);
        var numSecond = (new Date(time).getTime() - new Date(firstDayYear).getTime())/1000;
        return Math.ceil(numSecond/(24*3600));
    },
    /*获取某个日期在这一年的第几周*/
    getDayOfYearWeek:function(time) {
        var numdays = this.getDayOfYear(time);
        return Math.ceil(numdays / 7);
    }
}
 
/**
 * @description 操作数组
 */
var KenArray ={
    /*判断一个元素是否在数组中*/
    contains:function(arr, val) {
        return arr.indexOf(val) != -1 ? true : false;
    },
    
    /**
     * @param  {arr} 数组
     * @param  {fn} 回调函数
     * @return {undefined}
     */
    each:function(arr, fn) {
        fn = fn || Function;
        var a = [];
        var args = Array.prototype.slice.call(arguments, 1);
        for(var i = 0; i < arr.length; i++) {
            var res = fn.apply(arr, [arr[i], i].concat(args));
            if(res != null) a.push(res);
        }
    },
    
    /**
     * @param  {arr} 数组
     * @param  {fn} 回调函数
     * @param  {thisObj} this指向
     * @return {Array} 
     */
    map:function(arr, fn, thisObj) {
        var scope = thisObj || window;
        var a = [];
        for(var i = 0, j = arr.length; i < j; ++i) {
            var res = fn.call(scope, arr[i], i, this);
            if(res != null) a.push(res);
        }
        return a;
    },
    
    
    /**
     * @param  {arr} 数组
     * @param  {type} 1:从小到大   2:从大到小   3:随机
     * @return {Array}
     */
    sort:function(arr, type = 1) {
        return arr.sort( (a, b) => {
            switch(type) {
                case 1:
                    return a - b;
                case 2:
                    return b - a;
                case 3:
                    return Math.random() - 0.5;
                default:
                    return arr;
            }
        })
    },
    
    /*去重*/
    unique:function(arr) {
        if ( Array.hasOwnProperty('from') ) {
            return Array.from(new Set(arr));
        }else{
            var n = {},r=[]; 
            for(var i = 0; i < arr.length; i++){
                if (!n[arr[i]]){
                    n[arr[i]] = true; 
                    r.push(arr[i]);
                }
            }
            return r;
        }
        // 注:上面 else 里面的排重并不能区分 2 和 '2',但能减少用indexOf带来的性能,暂时没找到替代的方法。。。
        /* 正确排重
        if ( Array.hasOwnProperty('from') ) {
            return Array.from(new Set(arr))
        }else{
            var r = [], NaNBol = true
            for(var i=0; i < arr.length; i++) {
                if (arr[i] !== arr[i]) {
                    if (NaNBol && r.indexOf(arr[i]) === -1) {
                        r.push(arr[i])
                        NaNBol = false
                    }
                }else{
                    if(r.indexOf(arr[i]) === -1) r.push(arr[i])
                }
            }
            return r
        }
    
         */
    },
    
    
    /*求两个集合的并集*/
    union:function(a, b) {
        var newArr = a.concat(b);
        return this.unique(newArr);
    },
    
    /*求两个集合的交集*/
    intersect:function(a, b) {
        var _this = this;
        a = this.unique(a);
        return this.map(a, function(o) {
            return _this.contains(b, o) ? o : null;
        });
    },
    
    /*删除其中一个元素*/
    remove:function(arr, ele) {
        var index = arr.indexOf(ele);
        if(index > -1) {
            arr.splice(index, 1);
        }
        return arr;
    },
    
    /*将类数组转换为数组的方法*/
    formArray:function(ary) {
        var arr = [];
        if(Array.isArray(ary)) {
            arr = ary;
        } else {
            arr = Array.prototype.slice.call(ary);
        };
        return arr;
    },
    
    /*最大值*/
    max:function(arr) {
        return Math.max.apply(null, arr);
    },
    
    /*最小值*/
    min:function(arr) {
        return Math.min.apply(null, arr);
    },
    
    /*求和*/
    sum:function(arr) {
        return arr.reduce( (pre, cur) => {
            return pre + cur
        })
    },
    /*平均值*/
    average:function(arr) {
        return this.sum(arr)/arr.length
    }
}
 
var KenString ={
    /**
     * 去除空格
     * @param  {str}
     * @param  {type} 
     *       type:  1-所有空格  2-前后空格  3-前空格 4-后空格
     * @return {String}
     */
    trim:function  (str, type) {
        type = type || 1
        switch (type) {
            case 1:
                return str.replace(/\s+/g, "");
            case 2:
                return str.replace(/(^\s*)|(\s*$)/g, "");
            case 3:
                return str.replace(/(^\s*)/g, "");
            case 4:
                return str.replace(/(\s*$)/g, "");
            default:
                return str;
        }
    },
    
    /**
     * @param  {str} 
     * @param  {type}
     *       type:  1:首字母大写  2:首页母小写  3:大小写转换  4:全部大写  5:全部小写
     * @return {String}
     */
    changeCase:function  (str, type) {
        type = type || 4
        switch (type) {
            case 1:
                return str.replace(/\b\w+\b/g, function (word) {
                    return word.substring(0, 1).toUpperCase() + word.substring(1).toLowerCase();
    
                });
            case 2:
                return str.replace(/\b\w+\b/g, function (word) {
                    return word.substring(0, 1).toLowerCase() + word.substring(1).toUpperCase();
                });
            case 3:
                return str.split('').map( function(word){
                    if (/[a-z]/.test(word)) {
                        return word.toUpperCase();
                    }else{
                        return word.toLowerCase()
                    }
                }).join('')
            case 4:
                return str.toUpperCase();
            case 5:
                return str.toLowerCase();
            default:
                return str;
        }
    },
    
    
    /*
        检测密码强度
    */
    checkPwd:function  (str) {
        var Lv = 0;
        if (str.length < 6) {
            return Lv
        }
        if (/[0-9]/.test(str)) {
            Lv++
        }
        if (/[a-z]/.test(str)) {
            Lv++
        }
        if (/[A-Z]/.test(str)) {
            Lv++
        }
        if (/[\.|-|_]/.test(str)) {
            Lv++
        }
        return Lv;
    },
    
    /*过滤html代码(把<>转换)*/
    filterTag:function (str) {
        str = str.replace(/&/ig, "&");
        str = str.replace(//ig, ">");
        str = str.replace(" ", " ");
        return str;
    }
}
 
 
var KenNumber ={
    /*随机数范围*/
    random:function(min, max) {
        if (arguments.length === 2) {
            return Math.floor(min + Math.random() * ( (max+1) - min ))
        }else{
            return null;
        }
        
    },
    /*将阿拉伯数字翻译成中文的大写数字*/
    numberToChinese:function (num) {
        var AA = new Array("零", "一", "二", "三", "四", "五", "六", "七", "八", "九", "十");
        var BB = new Array("", "十", "百", "仟", "萬", "億", "点", "");
        var a = ("" + num).replace(/(^0*)/g, "").split("."),
            k = 0,
            re = "";
        for(var i = a[0].length - 1; i >= 0; i--) {
            switch(k) {
                case 0:
                    re = BB[7] + re;
                    break;
                case 4:
                    if(!new RegExp("0{4}//d{" + (a[0].length - i - 1) + "}$")
                        .test(a[0]))
                        re = BB[4] + re;
                    break;
                case 8:
                    re = BB[5] + re;
                    BB[7] = BB[5];
                    k = 0;
                    break;
            }
            if(k % 4 == 2 && a[0].charAt(i + 2) != 0 && a[0].charAt(i + 1) == 0)
                re = AA[0] + re;
            if(a[0].charAt(i) != 0)
                re = AA[a[0].charAt(i)] + BB[k % 4] + re;
            k++;
        }
    
        if(a.length > 1) // 加上小数部分(如果有小数部分)
        {
            re += BB[6];
            for(var i = 0; i < a[1].length; i++)
                re += AA[a[1].charAt(i)];
        }
        if(re == '一十')
            re = "十";
        if(re.match(/^一/) && re.length == 3)
            re = re.replace("一", "");
        return re;
    },
    
    /*将数字转换为大写金额*/
    changeToChinese:function (Num) {
            //判断如果传递进来的不是字符的话转换为字符
            if(typeof Num == "number") {
                Num = new String(Num);
            };
            Num = Num.replace(/,/g, "") //替换tomoney()中的“,”
            Num = Num.replace(/ /g, "") //替换tomoney()中的空格
            Num = Num.replace(/¥/g, "") //替换掉可能出现的¥字符
            if(isNaN(Num)) { //验证输入的字符是否为数字
                //alert("请检查小写金额是否正确");
                return "";
            };
            //字符处理完毕后开始转换,采用前后两部分分别转换
            var part = String(Num).split(".");
            var newchar = "";
            //小数点前进行转化
            for(var i = part[0].length - 1; i >= 0; i--) {
                if(part[0].length > 10) {
                    return "";
                    //若数量超过拾亿单位,提示
                }
                var tmpnewchar = ""
                var perchar = part[0].charAt(i);
                switch(perchar) {
                    case "0":
                        tmpnewchar = "零" + tmpnewchar;
                        break;
                    case "1":
                        tmpnewchar = "壹" + tmpnewchar;
                        break;
                    case "2":
                        tmpnewchar = "贰" + tmpnewchar;
                        break;
                    case "3":
                        tmpnewchar = "叁" + tmpnewchar;
                        break;
                    case "4":
                        tmpnewchar = "肆" + tmpnewchar;
                        break;
                    case "5":
                        tmpnewchar = "伍" + tmpnewchar;
                        break;
                    case "6":
                        tmpnewchar = "陆" + tmpnewchar;
                        break;
                    case "7":
                        tmpnewchar = "柒" + tmpnewchar;
                        break;
                    case "8":
                        tmpnewchar = "捌" + tmpnewchar;
                        break;
                    case "9":
                        tmpnewchar = "玖" + tmpnewchar;
                        break;
                }
                switch(part[0].length - i - 1) {
                    case 0:
                        tmpnewchar = tmpnewchar + "元";
                        break;
                    case 1:
                        if(perchar != 0) tmpnewchar = tmpnewchar + "拾";
                        break;
                    case 2:
                        if(perchar != 0) tmpnewchar = tmpnewchar + "佰";
                        break;
                    case 3:
                        if(perchar != 0) tmpnewchar = tmpnewchar + "仟";
                        break;
                    case 4:
                        tmpnewchar = tmpnewchar + "万";
                        break;
                    case 5:
                        if(perchar != 0) tmpnewchar = tmpnewchar + "拾";
                        break;
                    case 6:
                        if(perchar != 0) tmpnewchar = tmpnewchar + "佰";
                        break;
                    case 7:
                        if(perchar != 0) tmpnewchar = tmpnewchar + "仟";
                        break;
                    case 8:
                        tmpnewchar = tmpnewchar + "亿";
                        break;
                    case 9:
                        tmpnewchar = tmpnewchar + "拾";
                        break;
                }
                var newchar = tmpnewchar + newchar;
            }
            //小数点之后进行转化
            if(Num.indexOf(".") != -1) {
                if(part[1].length > 2) {
                    // alert("小数点之后只能保留两位,系统将自动截断");
                    part[1] = part[1].substr(0, 2)
                }
                for(i = 0; i < part[1].length; i++) {
                    tmpnewchar = ""
                    perchar = part[1].charAt(i)
                    switch(perchar) {
                        case "0":
                            tmpnewchar = "零" + tmpnewchar;
                            break;
                        case "1":
                            tmpnewchar = "壹" + tmpnewchar;
                            break;
                        case "2":
                            tmpnewchar = "贰" + tmpnewchar;
                            break;
                        case "3":
                            tmpnewchar = "叁" + tmpnewchar;
                            break;
                        case "4":
                            tmpnewchar = "肆" + tmpnewchar;
                            break;
                        case "5":
                            tmpnewchar = "伍" + tmpnewchar;
                            break;
                        case "6":
                            tmpnewchar = "陆" + tmpnewchar;
                            break;
                        case "7":
                            tmpnewchar = "柒" + tmpnewchar;
                            break;
                        case "8":
                            tmpnewchar = "捌" + tmpnewchar;
                            break;
                        case "9":
                            tmpnewchar = "玖" + tmpnewchar;
                            break;
                    }
                    if(i == 0) tmpnewchar = tmpnewchar + "角";
                    if(i == 1) tmpnewchar = tmpnewchar + "分";
                    newchar = newchar + tmpnewchar;
                }
            }
            //替换所有无用汉字
            while(newchar.search("零零") != -1)
                newchar = newchar.replace("零零", "零");
            newchar = newchar.replace("零亿", "亿");
            newchar = newchar.replace("亿万", "亿");
            newchar = newchar.replace("零万", "万");
            newchar = newchar.replace("零元", "元");
            newchar = newchar.replace("零角", "");
            newchar = newchar.replace("零分", "");
            if(newchar.charAt(newchar.length - 1) == "元") {
                newchar = newchar + "整"
            }
            return newchar;
        },
        
        /** 给输入数字的输入框现在 小数点数和长度  是否为负数
         * 20161230 cuis 小数点保留两位,总长度默认13,可以传入总长度
         *
         * @param obj
         *            控件对象
         * @param floatNum
         *            小数点保留位数 1~6, 最多精确到小数点6位 0表示不能有小数
         * @param maxLength
         *            默认最大长度 默认长度13
         * @param minus
         *            是否允许为负数 true为允许为负数,false为不允许为负数
         */
        floatNumberCheck :function(obj, floatNum, maxLength, minus) {
            if (minus == undefined || minus == null || minus == '') {
                minus = false;
            }
            if (maxLength == undefined || maxLength == null || maxLength == '') {
                maxLength = 13;
            }
            if (floatNum == undefined || floatNum == null) {
                floatNum = 2;
            }
            if (minus == true) {
                obj.value = obj.value.replace(/[^\d.-]/g, ""); // 清除“数字”和“.” "-"以外的字符
                // 仅仅只能第一个字符为负
                if (obj.value.substr(0, 1) == '-') {
                    obj.value = '-' + obj.value.substr(1, maxLength).replace(/[^\d.]/g, "");
                }
            } else {
                obj.value = obj.value.replace(/[^\d.]/g, ""); // 清除“数字”和“.” 以外的字符
            }
            if (obj.value != 0 && obj.value.indexOf(".") == -1 && obj.value.substr(0, 1) == 0) {
                obj.value = obj.value.substr(1);
            }
            obj.value = obj.value.replace(/\.{2,}/g, "."); // 只保留第一个. 清除多余的 //
            obj.value = obj.value.replace(".", "$#$").replace(/\./g, "").replace("$#$", ".");
            // obj.value =
            // obj.value.replace(/^(\-)*(\d+)\.(\d\d).*$/,'$1$2.$3');//只能输入两个小数
        
            if (floatNum == 2) {
                obj.value = obj.value.replace(/^(\-)*(\d+)\.(\d\d).*$/, '$1$2.$3'); // 只能输入两个小数
            } else if (floatNum == 1) {
                obj.value = obj.value.replace(/^(\-)*(\d+)\.(\d).*$/, '$1$2.$3'); //
            } else if (floatNum == 3) {
                obj.value = obj.value.replace(/^(\-)*(\d+)\.(\d\d\d).*$/, '$1$2.$3'); //
            } else if (floatNum == 4) {
                obj.value = obj.value.replace(/^(\-)*(\d+)\.(\d\d\d\d).*$/, '$1$2.$3'); //
            } else if (floatNum == 5) {
                obj.value = obj.value.replace(/^(\-)*(\d+)\.(\d\d\d\d\d).*$/, '$1$2.$3'); //
            } else if (floatNum == 6) {
                obj.value = obj.value.replace(/^(\-)*(\d+)\.(\d\d\d\d\d\d).*$/, '$1$2.$3'); //
            } else if (floatNum == 0) {
                obj.value = obj.value.replace(/\./g, ""); //
            } else {
                obj.value = obj.value.replace(/^(\-)*(\d+)\.(\d\d).*$/, '$1$2.$3'); // 只能输入两个小数
            }
            if (obj.value.length >= maxLength) {
                obj.value = obj.value.substr(0, maxLength);
            }
        }
}
 
 
 
var KenDom ={
    $:function(selector){ 
        var type = selector.substring(0, 1);
        if (type === '#') {
            if (document.querySelecotor) return document.querySelector(selector)
                return document.getElementById(selector.substring(1))
            
        }else if (type === '.') {
            if (document.querySelecotorAll) return document.querySelectorAll(selector)
                return document.getElementsByClassName(selector.substring(1))
        }else{
            return document['querySelectorAll' ? 'querySelectorAll':'getElementsByTagName'](selector)
        }
    },
    
    /*检测类名*/
    hasClass:function(ele, name) {
        return ele.className.match(new RegExp('(\\s|^)' + name + '(\\s|$)'));
    },
    
    /*添加类名*/
    addClass:function (ele, name) {
        if (!this.hasClass(ele, name)) ele.className += " " + name;
    },
    
    /*删除类名*/
    removeClass:function (ele, name) {
        if (this.hasClass(ele, name)) {
            var reg = new RegExp('(\\s|^)' + name + '(\\s|$)');
            ele.className = ele.className.replace(reg, '');
        }
    },
    
    /*替换类名*/
    replaceClass:function (ele, newName, oldName) {
        this.removeClass(ele, oldName);
        this.addClass(ele, newName);
    },
    
    /*获取兄弟节点 ele具有唯一性*/
    siblings:function (ele) {
        console.log(ele.parentNode)
        var chid = ele.parentNode.children,eleMatch = []; 
        for(var i = 0, len = chid.length; i < len; i ++){ 
            if(chid[i] != ele){ 
                eleMatch.push(chid[i]); 
            } 
        } 
        return eleMatch;
    },
    
    /*获取行间样式属性*/
    getByStyle:function (obj,name){
        if(obj.currentStyle){
            return  obj.currentStyle[name];
        }else{
            return  getComputedStyle(obj,false)[name];
        }
    },
    
    /*DOM转字符串*/
    domToStirng:function(htmlDOM) {
        var div = document.createElement("div");
        div.appendChild(htmlDOM);
        return div.innerHTML
    },
    
    /*字符串转DOM*/
    stringToDom:function(htmlString) {
        var div = document.createElement("div");
        div.innerHTML = htmlString;
        return div.children[0];
    },
    
    /**
     * 光标所在位置插入字符,并设置光标位置
     * 
     * @param {dom} 输入框
     * @param {val} 插入的值
     * @param {posLen} 光标位置处在 插入的值的哪个位置
     */
     setCursorPosition:function(dom, val, posLen) {
        var cursorPosition = 0;
        if (dom.selectionStart) {
            cursorPosition = dom.selectionStart;
        }
        this.insertAtCursor(dom, val);
        dom.focus();
        console.log(posLen)
        dom.setSelectionRange(dom.value.length, cursorPosition + (posLen || val.length));
    },
    
    /*光标所在位置插入字符*/
     insertAtCursor:function(dom, val) {
        if (document.selection) {
            dom.focus();
            sel = document.selection.createRange();
            sel.text = val;
            sel.select();
        } else if (dom.selectionStart || dom.selectionStart == '0') {
            let startPos = dom.selectionStart;
            let endPos = dom.selectionEnd;
            let restoreTop = dom.scrollTop;
            dom.value = dom.value.substring(0, startPos) + val + dom.value.substring(endPos, dom.value.length);
            if (restoreTop > 0) {
                dom.scrollTop = restoreTop;
            }
            dom.focus();
            dom.selectionStart = startPos + val.length;
            dom.selectionEnd = startPos + val.length;
        } else {
            dom.value += val;
            dom.focus();
        }
    }
}
 
/*图片加载*/
/**
 * @param {Object} arr 图片src地址
 *  @param 数组单个对象属性 这个属性值是src地址 如果fieldName为空 则认为arr是纯数组
 * @param {Object} callback 回调方法
 */
function imgLoadAll(arr,fieldName,callback){
    var arrImg = []; 
    for (var i = 0; i < arr.length; i++) {
        var img = new Image();
        img.src = fieldName?arr[i][fieldName]:arr[i];
        
        img.onload = function(){
            arrImg.push(this);
            if (arrImg.length == arr.length) {
                callback && callback(arrImg);
            }
        }
    }
}
 
/*音频加载*/
/**
 * @param {Object}  src  音频src地址
 * @param {Object} callback 回调方法
 */
function loadAudio(src, callback) {
    var audio = new Audio(src);
    audio.onloadedmetadata = callback;
    audio.src = src;
}

源码地址:点击

注:大部分的方法来源程序猿dd的博客。

本文来源于:宋文超super,专属平台有csdn、思否(SegmentFault)、 简书、 开源中国(oschina),转载请注明出处。

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