JavaScript

1. JavaScript data types　There are 6 data types in JavaScriptBoolean String number Undefined NullObjectThe object type contains an array (arrays) function (functions) and other general pairs.The number (Numbers) type can be an integer (intergers) or

Task descriptionCreate a file under the same directory as the previous task, create it in the task0002_2.html js directory, task0002_2.js and encode it to implement a countdown function. The interface first has a text input box, allowing to

the various heights of jqueryFirst, say $ (document) and $ (window), as follows:$ (document). Height (),//width of the entire Web page (window). height ();///Browser Visual window's Altitude $ (window). scrolltop ();//The height of the top of the

These implementations may already be in the new ECMA specification,But you can start from scratch and feel very good ...functionSet () {varItems = {}; This. has =function(value) {returnItems.hasownproperty (value); }; This. Add =function(value)

Write code is really cautious ah, each step of the sequence of operations are in the card.I actually just understood the thought and the approximate operation.When you really want to, you might want to copy, paste ... ：）functionLinkedList ()

First, let's look at a function:var a = ' global variable '= function () { = ' local variable '; = function () { = ' inner local '; return b } return N; } Cosole.log (b) // b:is not defind;The function f

Promise represents an asynchronous operation that is not yet complete, but will be completed in the future.There are three states of Promise Pending: Initial state, not yet known results Fulfilled: Represents successful operation

This paper directly describes the function parameters and closures, if relevant knowledge, in order to save the chapter, will be related to the word.Recently learning JavaScript functions, functions are a class of JavaScript, and to learn JavaScript,

xdirectory [1]id Property [2] Tag name [3]name property [4]all Front]When it comes to the most common DOM applications, I'm afraid I'm going to get a reference to a specific element or group of elements. The DOM defines a number of ways to select

Learning materials: JavaScript Advanced ProgrammingYou can create objects either by creating an object instance and then adding properties to it, or by object literals. But if you want to create a large number of objects, these two methods can lead

ObjectiveJavaScript is a scripting language belonging to the Web, and is used by millions of of pages to improve design, validate forms, detect browsers, create cookies, and more.How to write 1. Existence formMethod One: Exists in the JS file, which

As a front-end small white, feel the front-end or pretty suitable for their own, work is also very happy. However for a JavaScript small white in the small white, I decided to study hard/(ㄒoㄒ)/~~ before also read a lot of JavaScript related

Modules are an integral part of any powerful application, and it often helps us to clearly separate and organize the code units in the Project.JS in the implementation of the module method: Object literal notation Module mode AMD

Mobile front-end development summary and mobile Development Summary Mobile front-end development, that is, webapp, is mainly for high-end mobile phones such as Iphone and Android. 1. Disable User Screen rotation. This is definitely not possible.

CSS3 implements simple carousel images and css3 carousel Images The principle is to change the left value when CSS 3 is used to implement image switching. Only the simplest automatic playback function is available. After switching, the system

Mobile web Development Summary and web development Summary The previous week completed a PC-end HTML + CSS-based project. In the past few days, I have been engaged in mobile development, which is also based on HTML + CSS. Although I first came into

Detailed description of Bootstrap's iCheck plug-ins checkbox and radio, bootstrapicheck ICheck Features: 1. Same performance on different browsers (including ie6 +) and devices-including desktop and mobile devices 2. Supports Touch devices-iOS,

Sass primary syntax, sass The sass syntax used is: Sass -- watch test. scss: test.css -- style compact -- style expanded For example: 1. Custom Variables The content of test. scss is: $color: black;.test1 { background-color: $color;} Compiled

The process of loading and rendering HTML by the browser (standard-defined process and optimization of modern browsers), loading and rendering First look at the standard definition of the browser rendering process (found online ):When the browser

AngularJS Ajax detailed explanation and sample code, angularjsajax AngularJS provides $ http control to read data from the server as a service. The server can call a database to obtain records. AngularJS requires data in JSON format. Once data is