//随机方法
function rand(num){
return parseInt(Math.random()*num);
}
//随机颜色
function randomcolor(){
var colorAll=['f44336','ffab00','11c9c5','8fc31f','31afe9','b5a1eb','659fee','75ce49','ff5252','ff6d00','7c87c9']//随机颜色的取值范围
var str=rand(11)
return colorAll[str];
}
var obox=$(".wrap-tag");
var obj=$(".wrap-tag a");
for( len=obj.length,i=len;i--;){
obj[i].className="color"+rand(5);
obj[i].style.fontSize=rand(6)+12+"px";
obj[i].style.color="#"+randomcolor();
}