etTimeout来实现setInterval

 

etTimeout来实现setInterval

<script type="text/javascript">
function interval(func, w, t){
    var interv = function(){
        if(typeof t === "undefined" || t-- > 0){
            setTimeout(interv, w);
            try{
                func.call(null);
            }
            catch(e){
                t = 0;
                throw e.toString();
            }
        }
    };

    setTimeout(interv, w);
};

</script>