一个js文字波浪效果的问题，求助实现不了波浪效果的问题在哪

<!DOCTYPE html>



文字波浪效果
<br> function wave(obj,n) {<br> var theText=&quot;亲爱的爱上你从那天起甜蜜的很轻易&quot;;<br> var output=&quot;&quot;;<br> for(var i=0;i<theText.length;i++)<br> {<br> var size=60*Math.abs(Math.sin((i+n)*3.14/theText.length));<br> output+="<span style='font-size:"+size+"px;color:green'>&quot;+theText.substring(i,i+1)+&quot;</span>&quot;;<br> }<br> obj.innerHTML=output;<br> if (n&gt;theText.length)<br> {<br> n=0;<br> }<br> else<br> {<br> n++;<br> }<br> setTimeout(&quot;wave(&quot;+ obj +&quot;,&quot;+ n +&quot;)&quot;,200);<br> }<br> window.onload=function () {<br> var oSpan=document.getElementsByTagName(&#39;span&#39;)[0];<br> wave(oSpan,0);<br> }<br>


             //setTimeout("wave(" + obj + "," + n + ")", 200);
                        //========>                     
            setTimeout(function(){wave(obj,n)},200)

不要串接字符串，串接对象会调用默认的toString方法了，具体看这里

http://ask.csdn.net/questions/367104