Use the following to check if text box is empty or have more than 1 white spaces var name = jQuery.trim($("#ContactUsName").val()); ... ... <看更多>

In this video tutorial i will show you an example of:-- How to validate empty textbox using JQuery.--How to ... ... <看更多>

I'm doing some simple validations using jQuery to check if all textboxes are filled. $(document).ready(function () { $(" ... ... <看更多>

$('input#edit-keys-1').blur(function(){. tmpval = $(this).val();. if(tmpval == '') {. $(this).addClass('empty');. $(this).removeClass('not-empty');. } ... ... <看更多>