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A brief discussion on JavaScript's built-in objects and browser objects

In JavaScript, objects usually include two types: built-in objects and browser objects. In addition, users can also customize objects. An object contains two elements: 1. A set of data used to describe the properties of an object, that is, several variabl

2025-08-08
How to check whether to close the browser

This article example describes how to check whether to close the browser by js. Share it for your reference, the details are as follows: //Close the browser prompt message window.onbeforeunload = function (e) { e = e || window.event; var y =

2025-08-08
Detailed explanation of the mutual conversion between objects and strings in JS

When using the JSON.parse(data) method of the JSON2.JS file, I encountered a problem: throw new SyntaxError('JSON.parse'); query the data, and the general meaning is as follows: When the JSON.parse method encounters an unparsable string, it will b

2025-08-08
Detailed explanation of HTML5 Convas APIs method

☆ canvas.getContext(2d) cannot be drawn directly in convas, and its two-dimensional spatial drawing context must be obtained using this method. ☆ context.beginPath() means to start a new path drawing. ☆ context.isPointInPath(x, y) judgment

2025-08-08
Implement a multi-level tree with concise code and uncomplex logic using JavaScript

Looking for a lot of tree implementations on the Internet, I always feel that it is not satisfactory. Either you need to refer to external JS files to use plug-ins, or too much code makes people dazzled. In fact, I just want to implement a tree with conci

2025-08-08
AngularJS basic ng-mouseover directive simple example

AngularJS ng-mouseover directive AngularJS instance executes an expression when the mouse pointer is moved to an element:<!DOCTYPE html><html><head><meta charset="utf-8">

2025-08-08
Angular understands module and injector, that is, dependency injection

The benefits of dependency injection (DI) will not be discussed anymore, and those who have used the spring framework know it. As a foreground js framework, angularjs also provides support for DI, which is a feature that javascript/jquery does not have. a

2025-08-08
A brief discussion on the use of objects in js

Simple record of the use of objects in javascript 1. Create an object //Create an empty object var o={}; //Create an object with two attributes, x, y var o2={x:12,y:'12',name:'JS'}; //The value of the author attribute in this object is als

2025-08-08
Two usages of iFrame tags in HTML

This article mainly introduces two usages of iFrame tags in HTML, namely as pop-up layer, and cross-domain writing cookies. Friends who need it can refer to the latest work in the project - Budou Favorites. In short, it is to collect your favorite picture

2025-08-08
Implement seamless scrolling ideas and code sharing based on JS

Principle: 1. Give ul an absolute position to make it separate from the document stream, set left to 0, stuff the picture into ul, write a "moving" function, the function function can make ul's left run to the right at a positive speed, 2. S

2025-08-08
Summary of definitions and usage of table insertRow and deleteRow

How many rows are there in the table: var trCnt = table.rows.length; (table is Id) How many columns are there in each row: for (var i=0; i

2025-08-08
The first timer setTimeout and setInterval in the BOM series

setTimeout() setTimeout() method is used to specify that a function or string is executed after the specified number of milliseconds. It returns an integer representing the timer's number. This value can be passed to clearTimeout() to cancel the execu

2025-08-08
How to implement js submit form and pass parameters

//Add function beginfunction queryFun(){ var type = $("#artType").val(); var hasInputed = "1";//Indicates that the information to be searched is entered if($("#query").

2025-08-07
Source code interpretation of browser compatible module support in jQ page 1/2

Preface jQuery's attribute support is a module that determines whether browsers are compatible. This module includes leadingWhitespace, tbody, htmlSerialize, style, hrefNormalized, opacity, cssFloat, che

2025-08-07
A tutorial on 3D scrolling effects implemented using html5 and css3

How to use css3 and html5 to create a 3D scrolling special effect with very square circles. Today, I will bring you a 3D scrolling special effect implemented by html5 and css3. The code is very complete. Friends who don’t know can come in and learn it. Fr

2025-08-07

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