JavaScript

JavaScript Overview of JavaScript history 1992 Nombas developed the embedded scripting language for C-minus-minus (c--) (originally bundled in Cenvi software). Rename it scriptease. (The language that the client executes) Netscape

I. Specification of modulesFirst think about why the module is important?Because of the module, we can more easily use other people's code, want what function, load what module.However, this has a premise, that is, we must write the module in the

1.JavaScript If ... Else StatementConditional statements are used to perform different actions based on different conditions.1.1 Conditional statementsOften when writing code, you always need to perform different actions for different decisions. You

1.JavaScript operatoroperator = is used to assign a value.operator + is used to add values.y=5; z=2; x=y+z;1.1 + Operators for stringsThe + operator is used to add a literal value or a string variable (to join together).If you want to concatenate

There is a red Div square box in the center of the screen, the width is 200x200 pixels, the mouse moves in (hover), the square becomes 400x400 pixels, the mouse moves out, and the square recovers 200x200 pixels.Implemented in two ways using CSS3 and

Talk is cheap,show me your code. The history of JavaScriptIn 1995, Netscape Company's Brenda Eich for Netscape Navigator 2 began developing a scripting language called LiveScript (also used in the browser and server, on the server named

Jquery is a simple way to change the background image with the mouse passing through the navigation bar The effect of changing the background image with the mouse over the navigation bar is very nice. The following describes how jquery is used. If

JS sample code that directly closes the webpage window is not prompted This article mainly introduces the JS sample code that does not prompt to close the webpage window directly. If you need it, please refer to it and hope to help you. In IE7

Js restricts input to only numbers, letters, and Chinese characters. Js restricts that input can only be a number or a decimal point, or only a number or a decimal point, etc. This article has roughly sorted out some items and interested friends

Js implementation form (textarea) Acquisition and focus usage In js, onfocus, onblur, onmouseover, and so on will be used. jquery binds events. The following uses textarea as an example. If input is used, the value is written differently. 1.

Analysis of the trap of JavaScript prototype inheritance Like other object-oriented languages, JavaScript uses the reference method for object types. The variable holding the object is only an address, while the basic type data is a value. There

JavaScript Window Navigator,The window. navigator object contains information about the visitor's browser. Window Navigator Window. navigatorObjects can be written without the window prefix. Instance Warning !!! Information from the navigator

Analyzes the asynchronous io callback feature of a single JS thread, and the single js thread io callback Most of our initial exposure to javascript started with javascript scripts in html. However, this seemingly simple language has been used for

How to make your JS Code more readable and JavaScript code easier to read As a JS programmer, if the code written by myself looks nice and easy to read, it will not only look nice to myself, but it will be very smooth after other programmers take

Convert jquery. qqFace. js emoticon into a QR code, Jquery. qqFace. js usage Reference Html Initialization $ (Function () {$ ('. emotion '). qqFace ({id: 'facebox', assign: 'saytext', // assign path to the input box: '/Content/qqFace/arclist/' //

In vue, eventbus is triggered by multiple triggers and pitfalls. This is the first requirement. to transfer data between two page components, suppose I have page A and click A button on page, the page will automatically jump to page B, and I want to

Full-screen scrolling demo/swiper fullpage footer and swiper4swiper with header and footer implemented by swiper4 Full-screen scrolling demo with header and footer implemented by swiper4, Fullpage-Swiper header

Vue2.0 user permission control solution, vue2.0 permission Control Vue-Access-Control is a front-end user permission Control solution based on Vue, Vue-Router, and axios. It controls the routing, view, and request layers, this allows developers to

JavaScript Asynchronization for reading to Tom, and javascript Asynchronization for Tom One day, I suddenly wrote a method to call data from the background, which is displayed on the foreground page. However, the output result is always empty and

Bootstrap Table search box and query function, bootstraptable 1. Knowledge Point bootstrapTable refresh and query Configuration 2. Improve js Code Performance 1. Reduce global variable declarations 2. cache dom node search results 3. Local variables