<html>
<head>
<title>提交表单</title>
<meta http-equiv="content-type" content="text/html;charset=gb2312"/>
<script type="text/javascript">
function valid(f) {
if (f.phone1.value == "") {
alert("提示\n\n手机必须填写！");
return false;
}
} function closewin(){
if(window.close()){
return true;
}
return false;
}
</script></head><body><form id="frmcheck" name="frmcheck" onsubmit="return valid(this)">
登记手机: <input type="text" size="70" id="phone1" maxlength="11" value="">
<input type="submit" id="save" value="保存">
<input type="submit" id="cancel1" value="取消" onclick="closewin()"></form></body>
</html>要求即使输入空格 点击保存也要弹出请输入号码~
function Trim(str)
{
return str.replace(/(^\s*)|(\s*$)/g,"");
}function Ltrim(str)
{
return str.replace(/(^\s*)/g,"");
}function Rtrim(str)
{
return str.replace(/(\s*$)/g,"");
}
if Trim(f.phone1.value)==""即可。
function valid(f) {
if (f.phone1.value.replace(/\s/g,"") == "") {
alert("提示\n\n手机必须填写！");
return false;
}
}