var json = {
  pageNum : pageNum,
  pageSize : 3
};

添加单个数据:

json.age= 18;

结果:
var json = {

  pageNum : pageNum,
  pageSize : 3,

  age:18
};

 循环添加数组:

$.each(集合名,function(i,e){

  json[' 数组名['+i+'] '] =  值; 

});

 

创建空对象

var emptyObj1 = {};
var emptyObj2 = new Object();

创建空数组

var emptyArr1 = [];
var emptyArr2 = new Array();  

参考:https://www.cnblogs.com/liangzi4000/p/5979102.html

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