JavaScript

tab switch in the current Web page, it is very common. But the tab-switched JavaScript implementation has a lot to pay attention to, how to use the least code, the most flexible implementation. This collection of 37 tab-implemented JavaScript code

JavaScript does not have a basic date data type, so we can only explicitly create the Date object. We create a new Date object and create a string object the same way, using the keyword new and date constructors. The following line creates a Date

JavaScript reserved Keywords In JavaScript, some identifiers are reserved keywords and cannot be used as variable names or function names. JavaScript Standard All modern browsers fully support ECMAScript 3 (Es3,javascript's third edition, starting

Processing.js Processing.js is an open programming language that enables program images, animations, and interactive applications without the use of Flash or Java applets. Processing.js is a lightweight, easy to understand, ideal tool for

JavaScript Native provides two Base64 related methods. btoa(): Any value converted to BASE64 encoding atob(): Base64 encoding converted to original value var string = ' Hello world! ' // "SGVSBG8GV29YBGQH"// "Hello world!"Note

Stack (stack) aka stacks, it is a five-color platform rental (www.1159880099.com) QQ1159880099 operation constrained linear table. The limitation is that only one end of the table is allowed to insert and delete operations. This end is called the

First, the host environment is explained: The general hosting environment is created and maintained by the Shell , as long as the environment can provide the JS engine execution can be called the shell program. such as: Web browser, some desktop

How JavaScript is introducedHow JavaScript is introduced: 1. Write directly in script; 2. Use {#2 import File #} Specifications for JavaScriptSpecifications for JavaScript1. Variables: 0 variables are weakly typed (very casually); 1

Keyboard EventsKeyboard events that occur when the user is manipulating the keyboard.Common keyboard events are: Input, triggered when the value of the or element is changed. Keydonw is triggered when the user presses any key on the

DOM EventsThe common events in JavaScript are: UI events that occur when interacting with the browser UI itself, rather than the Web page. Mouse events that occur when the user is manipulating the mouse, trackpad, or touch screen.

1. Basic data types and reference data typesECMAScript includes two different types of values: the base data type and the reference data type.The base data type refers to simple data segments, which refer to objects that have multiple values.When we

1. Be sure to use the first time you assign a value to a variablevar / let / constKey wordsVariables are not declared and are directly assignable, and as a new global variable by default, avoid using global variables as much as possible.2. Use = = =

DOM Event actions in JavaScript Function The function is to encapsulate some methods by calling the Execute function. Role: Avoid repeating the code. Simplify programming and make programming

Read Catalogue The content of this article: Regular Expressions: Examples of forms validation using regular expressions: Back to top of this article: Regular expressions How to use regular expressions

Most smartphones have front and rear cameras, and when you create a video app you may want to select or toggle the front and rear camera.If you're developing a chat app, you're probably going to want to call a front-facing camera, but if you're

$.extend () in JQuery is often used to tool functions, many for merging parameters (objects) extend (bool,{},item1,item2 ...).A bool parameter of TRUE indicates a deep copy, and a shallow copy when False. {} indicates that the merge result is put in

The main points of this sharing JavaScript are the use of a For loop, an if selection structure judgment statement, an array definition, a timer, a purge timer, and a Date object.after execution:Ideas:1. Web structure: HTML2. Web Page layout: CSS3.

Break statements and Continue statementsBoth the break statement and the continue statement have a jump effect, which allows the code to be executed in an existing order.The break statement is used to jump out of a code block or loop.var i = 0;while(

Bootstrap implements foldable grouping side navigation menu and bootstrap navigation menu : Source code: table group 1 group item 1-1 group Item 1-2 group item 1-3 group item 1-4

In vue2.0 + element UI, the el-table data export Excel method is vue2.0el-table. 1. Install related dependencies There are two main dependencies. npm install --save xlsx file-saver If you want to see the use of the two plug-ins in detail, please go