Lesson - 01
JQUERY : Intro
2. The purpose of jQuery is to make it much easier to use JavaScript on your website.
What is jQuery?
1. jQuery is a lightweight, "write less, do more", JavaScript library.2. jQuery takes a lot of common tasks that require many lines of JavaScript code to accomplish, and wraps them into methods that you can call with a single line of code.
jQuery Syntax
Basic syntax is:$(selector).action()
Examples:
1. $(this).hide() - hides the current element.
2. $("p").hide() - hides all <p> elements.
3. $(".test").hide() - hides all elements with class="test".
4. $("#test").hide() - hides the element with id="test".
The Document Ready Event
You might have noticed that all jQuery methods in our examples, are inside a document ready event:
$(document).ready(function(){
// jQuery methods go here...
});