When the value of the text box changes, an event is triggered, valid in IE_Form effects

<title> new document </title> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <div id="msg"></div> <input id="txt" value=""> <input id="btn" value="dsa" type="button" onclick="ff()">
[Ctrl A select all Note: If you need to introduce external Js, you need to refresh to execute

]<script> //当状态改变的时候执行的函数 function handle() { document.getElementById('msg').innerHTML = "输入的文字为：" + document.getElementById('txt').value; } if(/msie/i.test(navigator.userAgent)) //ie浏览器 { document.getElementById('txt').onpropertychange = handle; } else {//非ie浏览器，比如Firefox document.getElementById('txt').addEventListener("input", handle, false); document.getElementById('txt').watch('a', fn); } function ff() { document.getElementById('txt').value=Math.random(); } </script>