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Summary of methods for obtaining the last bit of string by js

Method 1: Use the charAt method under the String object charAt() method to return characters at the specified position. Copy the code as follows: str.charAt(str.length 1) Please note that JavaScript does not have a character data type that is different fr

2025-04-12
JS closure instance summary

Knowledge before Js closure 1. Function scope (1). The special feature of Js language is that global variables can be read directly inside the function and copy code code as follows: <script type="text/javascript">var n=100;function parent(){ale

2025-04-12
HTML5 web page resources: Image effect example of HTML5 Canvas animation

Article introduction of Wulin.com (www.vevb.com): Recommended 8 image effects with HTML5 Canvas animation. 1) canvasphoto2) HTML5 Canvas Image Effect3) HTML5 Canvas Pixelate Ef

2025-04-12
Online FLV player implementation method

Home page: http://www.jeroenwijering.com/?item=Flash_Video_Player http://www.cgfans.net/bbs/Medias/2007/10/flash_flv_player.zi

2025-04-12
js implement select jump function code

js simply implements the select jump function: the code is as follows<!DOCTYPE html><html><head><title></title></head><body><div><select>

2025-04-12
Introduction to the trigger event of changing input tag content

1. The difference between onchange event and onpropertychange event: the onchange event is triggered when the content changes (the content may be equal twice) and the focus is lost; the onpropertychange event is triggered in real time, and every addition

2025-04-12
Example of usage of confirm is used to determine whether to execute when a button is operated.

<script type = "text/javascript" language = "javascript"> function clear1() { if(confirm("确定要清空数据吗？")) { document.main.t

2025-04-12
HTML5 examples: 15 excellent cases of web pages made with HTML5

Article introduction of Wulin.com (www.vevb.com): HTML5 examples: 15 excellent cases of web pages made with HTML5. Here we share with you the 15 carefully selected HTML5 website templates, which involve business, investment, resume, gallery, art, charity,

2025-04-12
Detailed explanation and example sharing of yepnope.js

A typical example of yepnope.js: yepnope({ test : Modernizr.geolocation, yep : 'normal.js', nope : ['polyfill.js', 'wrapper.js']}); This instance table

2025-04-12
HTML Table Tag Tutorial (35): Cross-column attribute COLSPAN

In complex table structures, some cells span multiple cells in the vertical direction, which requires the use of the cross-column property COLSPAN. Basic syntax<TD COLSPAN=VALUE> Syntax interpretation VALUE represents the number of columns span of a cell.

2025-04-12
Web Refactoring: Don't refactor for the sake of refactoring

Article introduction of Wulin.com (www.vevb.com): The word Refactoring was originally defined by Martin Fowler and Kent Beck. It is a modification that makes the internal structure of the software easier to understand and makes the software easier to chan

2025-04-12
Javascript Learning Notes Objects (IV): for in Loop

First, let’s take the example: // Poisoning Object.prototypeObject.prototype.bar = 1;var foo = {moo: 2};for(var i in foo) { console.log(i); // pri

2025-04-12
The time of the scrolling effect of js picture can be set at will when the mouse is moved up

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transit

2025-04-12
Asynchronous I/O on the nodejs tutorial

Preface In my image, asynchronous first appeared with ajax. At that time, I was still working on .net, and then .net actually released an asynchronous control... Although I finally learned that it is not asynchronous... Then, the front-end asynchronous is

2025-04-12
html element xhtml document root element feature summary

<html>Elements, the root element in XHTML documents, are so familiar. However, I have been trying a layout recently and found that in IE, it is not such a simple role, with some extraordinary "properties". Let's summarize it for reference: I

2025-04-12

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