LESSON NOTES :: Quick Tips (JQ)

Quick Tips (JQuery)

What does $("div.parent") will select? All the div element with parent class.

Rem: jQuery’s empty() vs remove() vs detach()

jQuery.noConflict();

When .noConflict() is called then jQuery returns $() to its previous owner and you will need to use jQuery() instead of shorthand $() function.

How to Check element exists or not in jQuery?

jQuery provides length property for every element which returns 0 if element doesn't exists else length of the element.

if ($('#dvText').length) {  

        // your code  

}

Disable-Enable all controls of page using jQuery?

- disable and enable controls on click of button:

$(document).ready(function() {

        $("#btnEnableDisable").toggle(function() {

           $("*").attr("disabled", "disabled");

               $(this).attr("disabled", "");

            }, function() {

               $("*").attr("disabled", "");

   });

});

Rem: bind() vs live() vs delegate()

Basic Filters: