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Javascript tutorial

js sample code to set the focus position in the text box at the end (simple and practical)

This can be achieved by using this.focus(); directly in Firefox. In IE, after this.focus();, assign the value of the text box to the text box, and the focus will be at the end. Very simple! ! For example: copy the code as follows: var tar=document.getElem

2025-01-21
PHP displays the file where the current file is located and all files in the folder expanded in a tree shape

Copy the code code as follows:<div id="jQ-menu">

2025-01-21
Quick solution to JS bubbling events

What is a bubbling event is when multiple divs are nested; that is, a parent-child relationship is established. When the parent div and the child div join the onclick event, when the onclick event of the child div is triggered, the child div Corresponding

2025-01-21
Example of initial value of Boolean object in js

Boolean (logical) objects are used to convert non-logical values into logical values (true or false). Creating a Boolean Object Use the keyword new to define a Boolean object. The following code defines a logical object named myBoolean: var myBo

2025-01-21
Simple example of tree drag function in Extjs4 (can be dragged between two trees)

Copy the code as follows: // Just configure the viewConfig in the treepanel. If it is between two trees, both trees must configure viewConfig:{plugins:{ptype:'treeviewdragdrop',appendOnly:tru

2025-01-21
JS input box mailbox automatic prompt function code implementation

In the same way, this plug-in does not require any html tags. It only needs an input box with a corresponding class name and the parent has a class name. Nothing else is needed. The internal HTML code is automatically generated. The HTML code is as follow

2025-01-21
Pagination application in Extjs4 combines front and backend

Front-end part: Copy the code as follows: Ext.define('GS.system.role.store.RoleGridStore',{ extend:'Ext.data.Store', model:'GS.system.role.model.R

2025-01-20
Quick solution to js is empty or not an object problem

1. Added a parameter <script language="javascript" defer="defer">2. 'null'为空或不是对象:<script type="text/javascript"> 里面加个defer=true属性试试看，

2025-01-20
Summary of four ways to pass parameters to event response functions

How to pass parameters to event handler? When I first came into contact with Javascript, I often struggled with this problem because I didn't have a deep understanding of closures. We often encounter this problem in discussion groups. The code is copi

2025-01-20
javascript reads xml to implement javascript paging

Copy the code code as follows:

2025-01-18
js makes the drop-down list box editable beyond selection

Copy the code code as follows:<script> function clearOption(obj,e){ var currKey=0,e=e||event; currKey=e.keyCode||e.which||e.charCode; if(cur

2025-01-18
In-depth understanding of how inheritance is implemented in JavaScript

Recently, I read online about someone’s experience during an interview with Taobao, and then I found that there were many things that I was not clear about, so I wrote some articles to deepen my understanding of some issues. A question mentioned in the ar

2025-01-18
Analyze page loading and js function execution onload or ready

First, the page loading sequence: parsing the HTML structure. Load external scripts and stylesheet files. Parse and execute script code. Construct HTML DOM model. Load external files such as images. The page is loaded. That is: html → head → title → #text

2025-01-18
js implementation of pop-up plug-in function example code sharing

Currently tested: supports IE6+ Firefox, Google browser, etc. Let's first take a look at the basic configuration items of this component: as follows: Copy the code as follows: this.config = {targetCls: '.clickElem', // Click on the element tit

2025-01-18
js+css realizes the masked pop-up layer in the center (scrolling with the browser window scroll bar)

js+css implements a masked center pop-up layer (scrolling with the browser window scroll bar). Copy the code as follows:<!doctype html><head><meta charset="utf-8" /><title></title>

2025-01-18

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