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Jquery实现只能输入数字的文本框

2010-12-16 17:13 435 查看
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>
<title>Untitled Document</title>
<script type="text/javascript" src="jquery-1.3.2.min.js"></script>
</head>
<script type="text/javascript">
$.fn.numeral = function() {
$(this).css("ime-mode", "disabled");
this.bind("keypress",function() {
if (event.keyCode == 46) {
if (this.value.indexOf(".") != -1) {
return false;
}
} else {
return event.keyCode >= 46 && event.keyCode <= 57;
}
});
this.bind("blur", function() {
if (this.value.lastIndexOf(".") == (this.value.length - 1)) {
this.value = this.value.substr(0, this.value.length - 1);
} else if (isNaN(this.value)) {
this.value = "";
}
});
this.bind("paste", function() {
var s = clipboardData.getData('text');
if (!//D/.test(s));
value = s.replace(/^0*/, '');
return false;
});
this.bind("dragenter", function() {
return false;
});
this.bind("keyup", function() {
if (/(^0+)/.test(this.value)) {
this.value = this.value.replace(/^0*/, '');
}
});
};
</script>
<body>
<input type="text" id="txt1">
<input type="text" id="Text2">
</body>

<script type="text/javascript">
$("#txt1").numeral();
</script>
</html>
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