How to determine if an object is empty in jquery

Jquery method to determine whether an object is empty: 1. Use the length attribute of the dom object to determine, the code is [obj.length == 0]; 2. Use the custom object method to determine, the code is [$. isEmptyObject()].

• This method is suitable for all brands of computers
  

jquery Method to determine whether the object is empty:

One is the dom object

The dom object will have a length attribute, so in this case:

obj.length == 0

You can judge that the object is empty

The other is a custom object

such asvar obj={}, this Objects defined by a case will not have a length property.

You need to use the jquery method: $.isEmptyObject()

　　if($.isEmptyObject(obj) == true){
　　　　console.log("对象为空");
　　}else{
　　　　console.log("对象非空");
　　}

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