var random = function(){
var a = 2;
var n = Math.round(Math.random()*(a-1))+1;
function obj(){
this.href = '';
this.class = '';
}
b = new Array();
for (var i=1;i<=a;i++){
b[i] = new obj();
}
b[1].href = "http://zgyxl.1905.com/";
b[1].class = "zgyxl-back2015";
b[2].href = "http://cinderella.1905.com/";
b[2].class = "hgn-back2014";
$('.link_l').add('.link_r').attr('href',b[n].href)
$('body').removeClass().addClass(b[n].class);
}
random();
来源:https://www.cnblogs.com/jiangtuzi/p/4235312.html