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Summary of common operations of javascript

This article summarizes various common operations in JavaScript, including strings, time, forms, regular verification, etc. It has extremely high reference value. Share it for your reference. The specific method is as follows: /***** Some methods of BaseP

2025-04-03
Code to embed FLV format files in html

In a web page (all web pages are composed of html, so the following code can be used for any web page. Except for web pages that restrict html, the code is copied as follows:

2025-04-03
html5 Canvas drawing tutorial (2) - Drawing straight lines and setting lines styles such as color/endpoint/intersection

If you don't know what Canvas is yet, you can check out the previous article. When learning to draw, lines are the most basic, and the connection of lines can form any shape. The same is true in Canvas. Before we start, we take out the canvas and brus

2025-04-03
Label tags in HTML forms

In Dreamweaver, as long as a form or form object, text box, etc. is added, a one will be added to the code<label></label> , I haven't understood what this label does, and today I happened to see the explanation: There are two attributes in Label that

2025-04-03
Analysis of the cause and solution of the window.location event not being executed when closing the page

1. Problem description: Widow.location = function() is defined in JS. When the page is closed, the logout() function is not executed. window.onunload = function() { logout(); }function log

2025-04-03
javascritp add url parameters to add parameters to url

Add object parameters to the url, and if there is one in the original url, overwrite the js code function addToUrl(obj){ var aprotocol = location.protocol; var ahost = location.host; var a

2025-04-03
Simple method to determine whether JavaScript object is null or attribute is empty

First, let’s talk about the difference between null and undefined: performing typeof on declared but uninitialized and undeclared variables, both return "undefined". null means an empty object pointer, and the typeof operation will return "

2025-04-03
HTML5 SVG 2D Introduction 12 - Introduction to SVG DOM and DOM Operations

Using scripts can easily complete various complex tasks, and it is also a mainstream way to complete animation and interaction. Since SVG is an element of html, it supports ordinary DOM operations. Since SVG is essentially an XML document, there is also a

2025-04-03
hta work Stupid Wolf CSDN Crawler

<html><head><title>Stupid Wolf CSDN Crawler</title><style> body { font-size:12; margin:20; background-color:#eeeeee; } div { font-siz

2025-04-03
Simple example of application of JS callback function

JS callback function is very simple, look at the code: var myback = null; function load(obj){ myback = obj; } function save(){ // Background request $.ajax.post...... /

2025-04-03
JavaScript to check whether the browser supports flash implementation code

JavaScript checks whether the browser supports flash, and the program outputs the result:<script> function flashChecker() { var hasFlash = 0; //是否安装了flash var flashVersio

2025-04-03
Take a picture as a button

For the beauty of the web page, we usually do not use the button provided by DM because the color does not meet our needs. Usually we will use a picture as a button ourselves.

2025-04-03
An example of the difference between null and undefined in JavaScript

Let’s talk about undefined first: variables in Javascript are of weak types, so when declaring variables, you only need to use the var keyword. If it is a strongly typed language like C, if the initial value is not specified when declaring a variable, it

2025-04-03
JS implements functions such as moving up and down moving down and deleting in a list

Recently, I made a project, including a list page. For user experience, all operations are implemented using JS, which includes functions such as moving up, moving down, deleting, etc. in the list. Front-end JS, and back-end data modification uses AJAX. T

2025-04-03
Keyword Ranking

Real-time ranking of keywords entered on search engines Monitors all queries and lists last queries and top 10 File Name

2025-04-03

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