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Javascript tutorial

Convert js string date yyyy-MM-dd to date sample code

Recently I encountered a problem, that is, when getting the date in the form and transmitting it to the background through json, the Date.parse(str) function reported an error under ff: NAN After searching for some information, I found that it was due to

2025-01-22
js gets url parameter code example sharing (JS operation URL)

The code is very simple. The main idea is to parse the url parameters into js objects, and then it is very convenient to add, delete, modify, and check. Take notes here. Copy the code as follows: var LG=(function(lg){var objURL=function(url){this.ourl=url

2025-01-22
JS dynamically adds and deletes Option objects in select (sample code)

As shown below: Copy the code The code is as follows: // Dynamically delete all options in the select: function delAllOptions(){ document.getElementById("user_dm").options.length=0; }

2025-01-22
The shortest and easiest to understand method of js Array operation

Array method 1 Array.join(): Concatenate all elements into a string using symbols and return it. If the element is not a basic type, call toString first. It corresponds to string.split(); arr = [1,2,true,3,4 ,5];(arr.join

2025-01-22
Example code for implementing scrolling picture news using Javascript

The following code is used to implement the copy code of picture news. The code is as follows: var index = 0; var Timer = null; function initGallery(){for(var i=0; i< 4; i++){document.getEleme

2025-01-21
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

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