<!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>无标题页</title>
<script type="text/javascript">
function checkVal()
{
var reg = /^\s+|\s+$/g;
var oInput = document.getElementById("txt");
var oValue = oInput.value;
//清除空格
oValue = oValue.replace(/^\s+|\s+$/g,"");
if(reg.test(oValue))
{
alert("有空格");
}
else
{
alert("没空格");
}
}
</script>
</head>
<body>
<input type="text" value="" id="txt" />
<input type="button" value="提交" onclick="checkVal()" />
</body>
</html>
清除空格
最新推荐文章于 2024-12-16 16:57:14 发布