js实现div色块碰撞

本文实例为大家分享了Android九宫格图片展示的具体代码,供大家参考,具体内容如下

描述:

生成两个div色块,一个可以拖动,一个不可以,用拖动的去撞击不能动的,会将这个色块随机撞到一个位置,改变颜色。

效果:

js实现div色块碰撞_第1张图片

js实现div色块碰撞_第2张图片

实现:

js文件:

function DragObj(_obj) {
  this.obj=_obj;
  this.point={};
  this.moveBool=false;
  this.obj.self=this;
  this.obj.addEventListener("mousedown",this.mouseHandler);
  this.obj.addEventListener("mouseup",this.mouseHandler);
  this.obj.addEventListener("mousemove",this.mouseHandler);
  this.obj.addEventListener("mouseleave",this.mouseHandler);
}
DragObj.prototype={
  mouseHandler:function (e) {
    if(!e){
      e=window.event;
    }
    if(e.type=="mousedown"){
      this.self.moveBool=true;
      this.self.point.x=e.offsetX;
      this.self.point.y=e.offsetY;
    }else if(e.type=="mousemove"){
      if(!this.self.moveBool) return;
      this.self.obj.style.left=(e.clientX-this.self.point.x)+"px"
      this.self.obj.style.top=(e.clientY-this.self.point.y)+"px"
    }else if(e.type=="mouseup" || e.type=="mouseleave"){
      this.self.moveBool=false;
    }
  },
  removeEvent:function () {
 
    this.obj.removeEventListener("mousedown",this.mouseHandler);
    this.obj.removeEventListener("mouseup",this.mouseHandler);
    this.obj.removeEventListener("mousemove",this.mouseHandler);
    this.obj.removeEventListener("mouseleave",this.mouseHandler);
 
    this.obj=null;
    this.point=null;
  }
};
var HitTest=HitTest || (function () {
  return {
    to:function (display0,display1) {
      var rect=display0.getBoundingClientRect();
      var rect1=display1.getBoundingClientRect();
      if(rect.left>=rect1.left && 
rect.left<=rect1.left+rect1.width
 && rect.top>=rect1.top && rect.top<=rect1.top+rect1.height){
        return true;
      }
      if(rect.left+rect.width>=rect1.left && rect.left+rect.width<=rect1.left+rect1.width && rect.top>=rect1.top
 && rect.top<=rect1.top+rect1.height){
        return true;
      }
      if(rect.left>=rect1.left && 
rect.left<=rect1.left+rect1.width 
&& rect.top+rect.height>=rect1.top && 
rect.top+rect.height<=rect1.top+rect1.height){
        return true;
      }
      if(rect.left+rect.width>=rect1.left && rect.left+rect.width<=rect1.left+rect1.width && 
rect.top+rect.height>=rect1.top 
&& rect.top+rect.height<=rect1.top+rect1.height){
        return true;
      }
    }
  }
})();
var LoadImg=LoadImg || (function () {
  return {
    load:function (listSrc,callBack) {
      this.callBack=callBack;
      this.listSrc=listSrc;
      this.num=0;
      this.imgArr=[];
      var img=new Image();
      img.addEventListener("load",this.loadHandler.bind(this));
      img.src=listSrc[0];
    },
    loadHandler:function (e) {
      if(!e){
        e=window.event;
      }
      e.currentTarget.removeEventListener
("load",this.loadHandler.bind(this));
      this.imgArr[this.num]=e.currentTarget;
      if(this.num==this.listSrc.length-1){
        this.callBack(this.imgArr)
        return;
      }
      var img=new Image();
      this.num++;
      img.addEventListener("load",this.loadHandler.bind(this));
      img.src=this.listSrc[this.num];
    }
  }
})();

html:




  
  Title
  
  


以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持脚本之家。

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