| |
<!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=utf-8" /> |
| |
<title>js数字验证-细数逝去的过往</title> |
| |
</head> |
| |
|
| |
<body> |
| |
<script type="text/javascript"> |
| |
function validate(){ |
| |
var reg = new RegExp("^[0-9]*$"); |
| |
var obj = document.getElementById("name"); |
| |
if(!reg.test(obj.value)){ |
| |
alert("请输入数字!"); |
| |
} |
| |
} |
| |
</script> |
| |
|
| |
请输入数字：<input type="text" id="name" /> |
| |
<button id="button" onclick="validate();">提交</button> |
| |
|
| |
</body> |
| |
</html> |
