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:
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

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