<script language="javascript" type="text/javascript">
function f1()
{
var nLength = 0;
var obj = document.getElementById("Text1");
var text = obj.value.;
var length = text.Length;
alert(length);
}
</script> <input id="Text1" type="text" onchange="f1()" />
为什么alert(text)打印出来的是输入到文本框的字符串,而alert(length)打印出来的是:undefined,我想取得输入到文本框里的字符串的长度,请问该怎么写?
function f1()
{
var nLength = 0;
var obj = document.getElementById("Text1");
var text = obj.value.;
var length = text.Length;
alert(length);
}
</script> <input id="Text1" type="text" onchange="f1()" />
为什么alert(text)打印出来的是输入到文本框的字符串,而alert(length)打印出来的是:undefined,我想取得输入到文本框里的字符串的长度,请问该怎么写?
<script>
$(function() {
$("#Text1").blur(function() {
var $aa = this.value;
alert($aa.length);
});
})
</script>
<head runat="server">
<title>无标题页</title>
<script language="javascript" type="text/javascript">
function f1()
{
var nLength = 0;
var obj = document.getElementById("Text1");
var text = obj.value;
var length = text.length;
alert(length);
}
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
<input id="Text1" type="text" onchange="f1()" />
</div>
</form>
</body>
</html>