2015 25th Monday

jquery in $ (document). Ready () differs from the window.onload in traditional javascript:

1. Execution Time

Window.onload must wait until all the elements of the page that include the picture have been loaded before they can be executed.
$ (document). Ready () is executed when the DOM structure is drawn and does not have to wait for the load to complete.

2. Different writing numbers

Window.onload cannot write multiple at the same time, if there are multiple window.onload methods, only one
$ (document). Ready () can be written multiple at the same time and can be executed

3. Simplified notation

Window.onload No simplified notation
$ (document). Ready (function () {}) can be simply written as $ (function () {});

$ (window). Load (function () {...}) Similar to Body.onload (),
They are all in the page all the elements (including HTML tags and references to all the pictures, Flash and other media) to execute after loading, but the former can be executed several times, but also conducive to JS and HTML separation.

2015 25th Monday