第一步：拷贝下面的代码到你的html文件的<body>和</body>之间；
<script language="JavaScript"> //put your text here var theText = "欢迎光临 JavaScript 收集区"; function nextSize(i,incMethod,textLength) { if (incMethod == 1) return (72*Math.abs( Math.sin(i/(textLength/3.14))) ); if (incMethod == 2) return (255*Math.abs( Math.cos(i/(textLength/3.14)))); } function sizeCycle(text,method,dis) { output = ""; for (i = 0; i < text.length; i++) { size = parseInt(nextSize(i +dis,method,text.length)); output += "<font style='font-size: "+ size +"pt'>" +text.substring(i,i+1)+ "</font>"; } theDiv.innerHTML = output; } function doWave(n) { sizeCycle(theText,1,n); if (n > theText.length) {n=0} setTimeout("doWave(" + (n+1) + ")", 50); } </script> <div ID="theDiv" align="center"> </div>