A brief explanation of the difference between document.ready and window.onload_Basic knowledge

Javascript can only perform certain operations on DOM elements after they have been defined. This problem lies in "javascript execution order" http://www.jb51.net/article/44577.htm There is a detailed introduction in the article.

jQuery uses document.ready to ensure that the code to be executed is executed after the DOM element is loaded. For example, in the article "jQuery Basics - How to Get Started", I used the following jQuery code:

Copy the code The code is as follows:

jQuery Simple example 2

I would like to say:

2. The $(document).ready() event can be used unlimited times in the same page. The registered functions will be executed in sequence (in the code).