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OffsetParent refers to position-related ancestor elements read-onlyParentNode refers to position-independent ancestor elements read-onlyfunction OffsetTop (Element) {var top=element.offsettop;var parent=element.offsetparent;while (parent!=null) {top+

First of all to understand ParentNode ChildNodes is the standard.It's all about adding a Chrome browser to the HTML (please forgive my slag ...)For HTML documents, it can be understood that the node tree, the element tree, is made up of nodes in the

When I enter any words in an input box, the corresponding email box will be automatically pulled down and prompted. When I enter 11 in the input box, all 11 mailboxes in the drop-down box will have the corresponding email box for other texts, the

JS has two attributes parentnode and offsetparent, presumably the difference we all know, can use or there are some places to pay attention to, especially the latter, want to know? Keep looking down.ParentNode refers to the parent node,

Recently, with WP, the flexibility of the system and the powerful plug-in functions were felt. The customer requested that the flv video format on the local server be played online. After comparison, the plug-in flash-video-player was selected, when

The binary search tree is a widely used data structure and is widely used in algorithms. The Binary Search Tree supports multiple dynamic sets of operations, including: 1. Search for a specific value: 2. Minimum value in the binary search tree: 3.

PHP JSON NULL There is an array of this: Array ( [0] = = Array ( [Name] = + 192.168.1.250 [id] = 3232236026 [items] + = array ( [Defualt] = = Array

In the web design, you often need to obtain the absolute bit value of the element so that the pop-up layer is not deformed on the page. So we need to get the absolute coordinates of the clicked element. When you look at Alibaba's JS, you can see one

Write in frontThis article does not have any WebKit code analysis, because ... No good analysis, in the implementation is nothing more than a tree (first-order Dfs) traversal just, embarrassed hahaha ... Look at the WebCore/dom/Node.h

Now, let's move it to the body. We will introduce several function functions before getting started! 1. functions used to format events CopyCode The Code is as follows: function getevent (){ // Compatible with both IE and FF If (document. All)