js 判断 json 对象是否为空

你的名字 2023-02-10 03:49 309阅读 0赞

1、转换为字符串比较

var obj1 = {}; 
    var obj2 = new Object(); 
    console.log(JSON.stringify(obj1) == '{}'); //true
    console.log(JSON.stringify(obj2) == '{}'); //true

2、通过遍历判断对象是否存在属性

3、jquery isEmptyObject

var obj1 = {}; 
    var obj2 = new Object(); 
    console.log($.isEmptyObject(obj1)); //true
    console.log($.isEmptyObject(obj2)); //true
    console.log($.isEmptyObject(undefined)); //true

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