JavaScript

function F (A, B, c) { alert (arguments.length); // Result: "2" A = +; Alert (arguments[0]); // Result: " Arguments[0] = "Qqyumidi"; alert (a); // Result: "Mingyue" alert (c); // result: "

① generally calls itself by name 1 function sum (num) { 2 if (Num 3 return 1; 4 }else { 5 return num+sum (num-1); 6 7 " 8 console.log (SUM (5)); // 15 There is a problem with the way the function name calls itself: The

Basic Features: Modular Package variables and function, not contact with global namaspasce, loose coupling Expose public only 1.var Blogmodule = (function (my) { Add some features return my;} (Blogmodule | | {}));

There is a way to reuse code that does not require strict inheritance. If you want to use a function in more than one class, you can let these classes share the function in an extensible way. The practice is largely: first create a class that

The difference between substring and substrThe substring () method is used to extract the character of a string intermediary between two specified subscripts.Stringobject.substring (Start,stop)Example:Results:Lo WThe substr () method extracts a

①TYPEOF Detecting variable types1Console.log (typeof1);// Number2Console.log (typeof"A");//string3Console.log (typeof true);//Boolean4Console.log (typeofundefined);//undefined5 Console.log (typeof (function func () {}));//function6 Console.log

DIV + CSS webpage layout: three-column layout, divcss1. Adaptive width layout of three columns The principle of the three-column layout is the same as that of the two-column layout, but with one more column, you only need to add one column to the

DIV + CSS webpage layout: one column layout, divcss1. webpage Layout Layout is a comprehensive planning and arrangement of things. A page layout is a formatting arrangement of text, images, or tables on the page. Webpage layout is very important for

Frontend path of backend programmers 03--HTML semantics, backend 03 -- html Directory What is HTML semantics? Why make it semantic? Semantics of common labels 1. What is HTML semantics? Simply put, each label does its own thing, so that it can

Share experiences with sister UI development and share experiences with sister ui development A few times ago, I saw a front-end UI framework similar to bootstrap, which was driven by curiosity. I finally decided to use this UI for the website

Css learning Notes 1. css learning notes 1. Use * {margin: 0; padding: 0;} at the beginning of css to clear all styles. 2. In css, table, th, td {padding: 0;} is equivalent to cellpadding = "0 ″. 3. In css, table {border-spacing: 0;} is

CSS cursor, csscursor* Directory [1] Definition [2] standard style [3] extended style [4] private style [5] definition style [6] Before common applications In a browser, the cursor is useful for providing interactive feedback. By changing the cursor

Recommended sublime plug-ins: Nettuts + Fetch, sublimenettutsNettuts + Fetch Github address: Nettuts-Fetch Use ctrl + shift + P-> pci-> Nettuts-Fetch in sublime to download     　　　　     This is a very practical plug-in. It can remotely download a

[Pitfall] some of the pitfalls recently encountered on Firefox. Since I have been working for more than a yearwebkitSeries. Start with m station, and then start with twoappEmbeddedhybridProject, always considerwebkitPrefix and related pseudo classes.

Html-related knowledge points, html-related knowledge points Sort out some problems found in html. To sum up, most of the answers are found online. Differences between yi.html AND htm There is no essential difference .. In the win32 era, htm is used

Js implements multipart upload of large files, and js multipart upload This article introduces how to upload files in js and shares it with you for your reference. The details are as follows: multipart upload of large files -->

How to copy files in Nodejs and copy files in Nodejs As the front-end kids shoes know, javascript does not have the permission to operate disk files, and server kids shoes have always been despised. However, node. js has made our front-end very

Details about the use of AngularJS controller and angularjs Controller The role of the Controller in Angularjs is to enhance the view. It is actually a function used to add additional functions to the view scope. We use it to set the initial state

Javascript implements a keyboard-controllable lottery system and a javascript lottery. Create a simple lottery system! Welcome to learn! JS principle: Create an array to store lottery content, such as iPhone 6. When you click it, enable the timer

In JavaScript, the setTimeout and setInterval functions are passed and called. setinterval calls the function. How to pass parameters to setTimeout and setIntervalSee the following code: var str = 'aaa'; var num = 2; function auto(num){ alert(num);