<!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>
<title></title>
<script type=
"text/javascript"
>
function validation() {
var
val = document.getElementById(
"txtNumber"
).value;
var
regu = /^d+$/;
//var regu = /^[1-9]d*|0$/; 亲测可用
if
(val !=
""
) {
if
(!regu.test(val)) {
document.getElementById(
"labResult"
).style.color =
"red"
;
document.getElementById(
"labResult"
).innerHTML =
"验证失败!"
;
}
else
{
document.getElementById(
"labResult"
).style.color =
"green"
;
document.getElementById(
"labResult"
).innerHTML =
"验证成功!"
;
}
}
}
</script>
</head>
<body>
<input id=
"txtNumber"
name=
"txtNumber"
type=
"text"
/>
<input id=
"btnValidation"
name=
"btnValidation"
type=
"button"
value=
"校验"
onclick=
"validation()"
/>
验证结果:<label id=
"labResult"
></label>
</body>
</html>
转载自:http://www.cnblogs.com/lengzhan/p/6042730.html