当前位置:首页 > 开发 > Web前端 > JavaScript > 正文

How to check if object has any properties in JavaScript?

发表于: 2014-04-03   作者:alleni123   来源:转载   浏览次数:
摘要: http://stackoverflow.com/questions/2673121/how-to-check-if-object-has-any-properties-in-javascript function isEmptyObject(obj) { for(var prop in obj) { if (Object.prototype.hasOwnProper
http://stackoverflow.com/questions/2673121/how-to-check-if-object-has-any-properties-in-javascript


function isEmptyObject(obj) {
  for(var prop in obj) {
    if (Object.prototype.hasOwnProperty.call(obj, prop)) {
      return false;
    }
  }
  return true;
}

isEmptyObject({}); // true
isEmptyObject({foo:'bar'});  // false

How to check if object has any properties in JavaScript?

  • 0

    开心

    开心

  • 0

    板砖

    板砖

  • 0

    感动

    感动

  • 0

    有用

    有用

  • 0

    疑问

    疑问

  • 0

    难过

    难过

  • 0

    无聊

    无聊

  • 0

    震惊

    震惊

编辑推荐
There is a system variable SY-DATAR. If any value is changed in the screen it will have 'X'.Ot
Spark submit任务到Spark集群时,会出现如下异常: Exception 1:Initial job has not accepted any
To instantiate any Business object in a Workflow By Swetabh Shukla, Infosys from Link 1. Go t
1. Profile 'FND: Diagnostics' = Yes at user level.This will make 'Diagnostics' menu display.
There are many ways to find the World Wide Name (WWN) of fibre channel HBA connected to windo
什么是json? JSON 即 JavaScript Object Natation,它是一种轻量级的数据交换格式,非常适合于服务
一、Object是所有类的父类,Object类存在以下一些静态方法: 1)Object.preventExtensions(object)
the difference between prototype property and [[prototype]] which constructs the chain of pro
什么是json? JSON 即 JavaScript Object Natation,它是一种轻量级的数据交换格式,非常适合于服务
JSON(JavaScript Object Notation) 是一种轻量级的数据交换格式。易于人阅读和编写。同时也易于机器
版权所有 IT知识库 CopyRight © 2009-2015 IT知识库 IT610.com , All Rights Reserved. 京ICP备09083238号