setTimeout 传递的方法

function waitExe(param){

    if(time < 20){

        time ++;

        $("#content").html(time);

        var self=this;

        timeout = window.setTimeout(function(){

            self.waitExe(param)

        }, 2000)

    }else{

        alert(param);

        clearTimeout(timeout);

    }

}

function f_testSetTimeOut(){

    time = 0;

    waitExe('gg');

    $("#content").html('---------');

}

<input type="button"  value="setTimeOut测试" onclick="f_testSetTimeOut();"/>

<div id="content">--</div>