Comparison of javascript Library (1) with DOM Function

1. Prototype Library

This is the first library to simplify document. getElementById () to $.

For example, the original var myele = document. getElementById ('id') is equivalent to var myele = $ ('id ')

In addition, $ also extends some features

For example, var eleArray = $ ('id1', 'id2', 'id3 ', and 'id4') can return an array containing four objects.

In addition to $, this function library also provides getElementsByClassName, addClassName for adding class names, removeClassName for removing class names, and so on.

2, jQuery

It is more powerful than prototype.

For example:
Document. getElementById () ==>$ ('# money ')

Document. getElementsByTagName ==>$ ('P ')

Returns the element with the same class name: $ ('. money ')

And can be derived like css: $ ("# content table. dateTable ")

The css rule analysis function provided in the jQuery library is amazing. It supports css1, css2, css3, and most of the Selection Characters in XPath.

3. DoJo Library

Obtain the element object by id: var money = Dojo. byId ('money ')

Get the element by Class Name: Dojo.html. getElementByClass ()