js实时获取input数据

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>on用onpropertychange,oninput事件解决onchange事件的不足 by koyoz.com</title>
<style type="text/css">
*{font-size:14px;font-family:'Comic Sans MS', Verdana}
body {margin-left:20px}
</style>
</head>
<body>
<p>使用onchange事件: </p>
<input type="text" id="txt1" />
<p>使用onpropertychange/oninput事件: </p>
<input type="text" id="txt2" />
<p>结果:</p>
<input type="text" id="txt" />

<script type="text/javascript">
var $ = function(o) {
return document.getElementById(o)
};
$('txt1').onchange = function() {
$('txt').value = this.value;
}
$('txt2').onpropertychange = function() {
$('txt').value = this.value;
}
if (window.addEventListener) {
$('txt2').addEventListener('input', function() {$('txt').value = this.value}, false);
}
</script>
</body>
</html>

JQ:

$("#textboxID").bind("propertychange", function() { 
alert($(this).val()); 
}); 

原文地址:https://www.cnblogs.com/kingreatwill/p/4012866.html