jQuery中$(function())的作用

$(function(){//五分钟无操作，返回系统首页,timeToreturn.js function timeToReturn(){ window.location.href = "http://localhost:8080/zhongCourt/"; } var nowtime = Date.parse(new Date()); var timeend = Date.parse(new Date()); $("body").click(function(){ nowtime = Date.parse(new Date()); console.log("nowtime" + nowtime); }); function check(){ timeend = Date.parse(new Date()); console.log("check"); if((timeend - nowtime) > 300000){ timeToReturn(); } setTimeout(check,10000); } setTimeout(check,10000); })