在JS中使用正则表达式验证电子邮箱
<input type="text" id="email" name="email">
<input type="button" value="验证" onclick="isEmail('email')">
<script language="javascript">
function isEmail(email) {
var strEmail=document.getElementById(email).value;
if (strEmail.search(/^\w+((-\w+)|(\.\w+))*\@[A-Za-z0-9]+((\.|-)[A-Za-z0-9]+)*\.[A-Za-z0-9]+$/) != -1)
{
alert("Email格式正确!");
return true;
}else{
alert("Email格式不正确!");
document.getElementById(email).value="";
document.getElementById(email).focus();
return false;
}
}
</script>
<input type="text" id="email" name="email">
<input type="button" value="验证" onclick="isEmail('email')">
<script language="javascript">
function isEmail(email) {
var strEmail=document.getElementById(email).value;
if (strEmail.search(/^\w+((-\w+)|(\.\w+))*\@[A-Za-z0-9]+((\.|-)[A-Za-z0-9]+)*\.[A-Za-z0-9]+$/) != -1)
{
alert("Email格式正确!");
return true;
}else{
alert("Email格式不正确!");
document.getElementById(email).value="";
document.getElementById(email).focus();
return false;
}
}
</script>