4、自执行函数

1、执行写法

(function aaa() {
})();

//由于司机可能很多，所以，先执行，放入本地缓存
(function foo() {
    var dlcmans = localStorage.getItem("DLCMANS");
    if (dlcmans == "" || dlcmans == undefined || dlcmans == null) {

        var pageurl = "../json/api?apikey=GuideCarManDataSearch";
        
        $.ajax({
            url:pageurl,
            dataType:"json",
            success:function(data){
                if( data.code == 0 ){
                    var DLCMANSLocal = JSON.stringify(data.data);
                    localStorage.setItem("DLCMANS",DLCMANSLocal);
                }
            }
        })
    } else {
        
    }
})();