$.param()的含义:序列化对象，返回字符串
var params = {a:300,b:300};
var str = $.param(params);
console.log(str);输出结果为：a=1900&b=1900 标签：300,param,params,1900,str,var,500 From： https://www.cnblogs.com/ccKing/p/16601480.html
$.param()的含义:序列化对象，返回字符串
var params = {a:300,b:300};
var str = $.param(params);
console.log(str);