jQuery check if input text contains specific text -

if input text field contains "@twitter.com", append text div.

currently have following works when test=151516058@twitter.com, suggestions?

var test = jquery('input[name$="user_email"]').val();    if(test == "@twitter.com"){      jquery(".iump-clear").append('<div>please update email address</div>');   }  <input type="text" name="user_email" value="151516058@twitter.com"> <div class="iump-clear"></div> 

you should check if @twitter.com contained in input, can use .indexof() that

var test = jquery('input[name$="user_email"]').val();    if(test.indexof("@twitter.com")>-1){      jquery(".iump-clear").append('<div>please update email address</div>');   }  <input type="text" name="user_email" value="151516058@twitter.com"> <div class="iump-clear"></div>