如果是在前端給一個文本框賦值的話,有事件可以捕捉這一變化<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Key.aspx.cs" Inherits="Test_Key" %><!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 runat="server">
<title>未命名頁面</title> <script id="igClientScript" type="text/javascript">
<!--
function Change()
{
document.getElementById('txtTarget').value = 'Transfer';
alert(event.propertyName);//可以查看是甚麼屬性發生了變化
}
function ChangeProperty()
{
document.getElementById('txtOriginal').value = 'Hello';
}
// -->
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
<input type="text" id="txtOriginal" onpropertychange="Change()" />
<input type="text" id="txtTarget" />
<input type="button" id="btnChange" onclick="ChangeProperty()" value="Change Property" />
</div>
</form>
</body>
</html>
<head runat="server">
<title>未命名頁面</title> <script id="igClientScript" type="text/javascript">
<!--
function Change()
{
document.getElementById('txtTarget').value = 'Transfer';
alert(event.propertyName);//可以查看是甚麼屬性發生了變化
}
function ChangeProperty()
{
document.getElementById('txtOriginal').value = 'Hello';
}
// -->
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
<input type="text" id="txtOriginal" onpropertychange="Change()" />
<input type="text" id="txtTarget" />
<input type="button" id="btnChange" onclick="ChangeProperty()" value="Change Property" />
</div>
</form>
</body>
</html>
<input type="text" id="txtOriginal" onpropertychange="Change() oninput="Change()" />