jQuery邮件地址验证插件jQuery邮件地址验证插件是一款jQuery addClassWhenEmail插件。jQuery表单邮件验证jQuery插件
<script src="js/main.js"></script>
<script>
;( function( window, document, undefined )
{
'use strict';
var form = '.newsletter',
className = 'newsletter--active',
email = 'input[type="email"]',
addEventListener = function( element, event, handler )
{
element.addEventListener ? element.addEventListener( event, handler
) : element.attachEvent( 'on' + event, function(){ handler.call( element ); });
},
forEach = function( elements, fn )
{
for( var i = 0; i < elements.length; i++ ) fn( elements[ i ], i );
},
addClass = function( element, className )
{
element.classList ? element.classList.add( className ) :
element.className += ' ' + className;
},
removeClass = function( element, className )
{
element.classList ? element.classList.remove( className ) :
element.className += element.className.replace( new RegExp( '(^|\\b)' + className.split( '
' ).join( '|' ) + '(\\b|$)', 'gi' ), ' ' );
};
forEach( document.querySelectorAll( form ), function( $form )
{
var $email = $form.querySelectorAll( email );
if( $email.length )
{
$email = $email[ 0 ];
addEventListener( $email, 'keyup', function()
{
$email.value != '' && /^([\w-\.]+@([\w-]+\.)+[\w-]{2,12})?
$/.test( $email.value ) ? addClass( $form, className ) : removeClass( $form, className );
});
}
});
})( window, document );
/*
jQuery version:
$( function( $, window, document, undefined )
{
'use strict';
var form = '.newsletter',
className = 'newsletter--active',
email = 'input[type="email"]';
$( form ).each( function()
{
var $form = $( this ),
$email = $form.find( email );
$email.on( 'keyup.addClassWhenEmail', function()
{
$form.toggleClass( className, $email.val() != '' && /^([\w-\.]+@
([\w-]+\.)+[\w-]{2,12})?$/.test( $email.val() ) );
});
});
})( jQuery, window, document );
*/
</script>
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