要完成此效果需要两个步骤 第一步：把如下代码加入到区域中 <script LANGUAGE="JavaScript"> var text = "在输入栏随便写点东东!!!"; var total_length = 60; // length of string+spaces function doShoot(msg) { var status_message = ""; var assembling = ""; this.status = status_message; var index = 0; var location = 0, i; // now shoot one letter at a time for(i=0; i < msg.length; i++) { // moves through the message for(j=total_length-status_message.length; j > -1;j--) { // see how many spaces have to be added assembling = ""; for(var k=0; k < j; k++) assembling += " "; assembling += msg.charAt(i); this.status=status_message +assembling; } status_message += assembling; } } </script>

第二步：把“onload="doShoot(text)"”加在标记里 例如：