以下是代码片段：
if(document.userinfo.useremail.value.length!=0)
{
if (document.userinfo.useremail.value.charAt(0)=="." ||
document.userinfo.useremail.value.charAt(0)=="@"||
document.userinfo.useremail.value.indexOf('@', 0) == -1 ||
document.userinfo.useremail.value.indexOf('.', 0) == -1 ||
document.userinfo.useremail.value.lastIndexOf("@")==document.userinfo.useremail.value.length-1 ||
document.userinfo.useremail.value.lastIndexOf(".")==document.userinfo.useremail.value.length-1)
{
alert("Email地址格式不正确！");
document.userinfo.useremail.focus();
return false;
}
}
else
{
alert("Email不能为空！");
document.userinfo.useremail.focus();
return false;
} |
飞飞Asp技@术乐园
|
