如何使用JQuery来验证电子邮件地址?
当前回答
使用这个
if ($this.hasClass('tb-email')) {
var email = $this.val();
var txt = /^([a-zA-Z0-9_\.\-\+])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
if (!txt.test(email)) {
e.preventDefault();
$this.addClass('error');
} else {
$this.removeClass('error');
}
}
其他回答
<!-- Dont forget to include the jQuery library here -->
<script type="text/javascript" src="jquery-1.3.2.min.js"></script>
<script type="text/javascript">
$(document).ready(function() {
$("#validate").keyup(function(){
var email = $("#validate").val();
if(email != 0)
{
if(isValidEmailAddress(email))
{
$("#validEmail").css({
"background-image": "url('validYes.png')"
});
} else {
$("#validEmail").css({
"background-image": "url('validNo.png')"
});
}
} else {
$("#validEmail").css({
"background-image": "none"
});
}
});
});
function isValidEmailAddress(emailAddress) {
var pattern = new RegExp(/^(("[\w-\s]+")|([\w-]+(?:\.[\w-]+)*)|("[\w-\s]+")([\w-]+(?:\.[\w-]+)*))(@((?:[\w-]+\.)*\w[\w-]{0,66})\.([a-z]{2,6}(?:\.[a-z]{2})?)$)|(@\[?((25[0-5]\.|2[0-4][0-9]\.|1[0-9]{2}\.|[0-9]{1,2}\.))((25[0-5]|2[0-4][0-9]|1[0-9]{2}|[0-9]{1,2})\.){2}(25[0-5]|2[0-4][0-9]|1[0-9]{2}|[0-9]{1,2})\]?$)/i);
return pattern.test(emailAddress);
}
</script>
<style>
#validEmail
{
margin-top: 4px;
margin-left: 9px;
position: absolute;
width: 16px;
height: 16px;
}
.text
{
font-family: Arial, Tahoma, Helvetica;
}
</style>
<title>Live Email Validation with jQuery Demo</title>
</head>
<body>
<div class="text"><h1>Reynoldsftw.com - Live Email Validation</h1><h2>Type in an email address in the box below:</h2></div>
<div><input type="text" id="validate" width="30"><span id="validEmail"></span></div>
<div class="text"><P>More script and css style
: www.htmldrive.net
来源:htmldrive.com
查看http: //bassistance.de/jquery-plugins/jquery-plugin-validation/。这是一个很好的jQuery插件,它允许为表单构建强大的验证系统。 这里有一些有用的示例。因此,表单中的电子邮件字段验证看起来是这样的:
$("#myform").validate({
rules: {
field: {
required: true,
email: true
}
}
});
有关详细信息和示例,请参阅电子邮件方法文档。
function isValidEmail(emailText) {
var pattern = new RegExp(/^((([a-z]|\d|[!#\$%&'\*\+\-\/=\?\^_`{\|}~]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])+(\.([a-z]|\d|[!#\$%&'\*\+\-\/=\?\^_`{\|}~]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])+)*)|((\x22)((((\x20|\x09)*(\x0d\x0a))?(\x20|\x09)+)?(([\x01-\x08\x0b\x0c\x0e-\x1f\x7f]|\x21|[\x23-\x5b]|[\x5d-\x7e]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(\\([\x01-\x09\x0b\x0c\x0d-\x7f]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF]))))*(((\x20|\x09)*(\x0d\x0a))?(\x20|\x09)+)?(\x22)))@((([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])*([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])))\.)+(([a-z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(([a-z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])*([a-z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])))\.?$/i);
return pattern.test(emailText);
};
像这样使用:
if( !isValidEmail(myEmail) ) { /* do things if myEmail is valid. */ }
function validateEmail(emailaddress){
var emailReg = /^([\w-\.]+@([\w-]+\.)+[\w-]{2,4})?$/;
if(!emailReg.test(emailaddress)) {
alert("Please enter valid email id");
}
}
我从jqvalidate版本1.11.0中获得这段代码,并在版本1.16.0中作为另一个方法实现。它的工作原理
jQuery.validator.addMethod("strictemail", function(value, element) {
var valid = /^((([a-z]|\d|[!#\$%&'\*\+\-\/=\?\^_`{\|}~]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])+(\.([a-z]|\d|[!#\$%&'\*\+\-\/=\?\^_`{\|}~]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])+)*)|((\x22)((((\x20|\x09)*(\x0d\x0a))?(\x20|\x09)+)?(([\x01-\x08\x0b\x0c\x0e-\x1f\x7f]|\x21|[\x23-\x5b]|[\x5d-\x7e]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(\\([\x01-\x09\x0b\x0c\x0d-\x7f]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF]))))*(((\x20|\x09)*(\x0d\x0a))?(\x20|\x09)+)?(\x22)))@((([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])*([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])))\.)+(([a-z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(([a-z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])*([a-z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])))$/i.test(value);
return valid;
}, "Escribe un correo v\u00e1lido"
);
在电子邮件规则中
'correo': {
required: 'Por favor ingresa tu correo',
email: 'Escribe un correo v\u00e1lido',
strictemail:'Escribe un correo v\u00e1lido'
}
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