js:打字效果代码

<div id="loadDiv" style="border:1px solid black;background-color:white;padding:5px;position:absolute;top:10px;left:10px;width:200px;height:20px;"></div>

      
<script>
function $(id) { return document.getElementById(id);}

function loading () {
    var div = $('loadDiv'), str = 0, strs = '请您稍候片刻...';
    var mixTimer = setInterval(function (){
        div.innerHTML = strs.substring(0, str) + '_';
        str = str > strs.length - 2 ? 0 : str + 1;
    }, 300);
}
loading();
</script>

----------