JavaScript

Please indicate the source: http://blog.csdn.net/lmj623565791/article/details/25076713Always feel that JS is very powerful, because the long-term do not write JS code, recently just temperature so warm.1, JavaScript does not have the concept of code

If you are not familiar with event events, it is recommended to read my previous text javascript: Understanding DOM events. Or look directly below the worker API.First, we need to instantiate a worker object, and the browser will open a new

In JavaScript, arrays can be created using the array constructor, or created quickly using [], which is also the preferred method. The array is a prototype inherited from object, and he has no special return value for typeof, he only returns '

Array filter creates a new array with all elements this pass the test implemented by the provided function. In this lesson we discuss if only a truthy or Falsey value are required as the return value to the function, which in turn s allows us to

Overview of a RegExp objectThe RegExp object represents a regular expression, and regexp is the abbreviation for a regular expression, which is a powerful tool for performing pattern matching on strings. Regexpobject is used to specify what is

About JS data typesThere are five kinds of simple types: undifined, Null, Boolean, number, StringComplex types have one: ObjectUsing the typeof operator to get the data type, this operator returns a

Today, the difference and transformation between a JavaScript object and a jquery object and a DOM object has been seen before, but the JavaScript object has been created beforevar variable =//This is a JavaScript objectvar $variable = $ ()//This is

type of a valueThe basic type and reference type are mentioned when we introduce the data type of JS, but before we talk about the two types, let's take a look at the variables 'The type of the value. In ECMAScript, a variable can have two types of

In JavaScript, object A, if you want to inherit the properties and methods of object B, simply place object B on the prototype chain of object A. The prototype chain of an object is a string of objects that are connected by the __proto__ property,

Reproduced1. DefinitionScope scope1) an area in which something is executed, manipulated, and controlled2) When writing a program, the visibility of variables in the program; For example, whether a function can use a variable created by another

With JavaScript's math.random () method, you can get random numbers from 0 to 1, so how do you get the number randomly between any given two numbers? such as obtaining a random number between 2 and 5, a random number between 5 and 10, etc.Since the

JS Core ECMAScript rules of the flow control statements and other programming languages are quite similar. We choose some practical examples to seeThese statements. Sequential structure We are no longer mentioned here, directly saying conditions and

This article summarizes JavaScript's use of inheritance, and hopefully this article will help you with JavaScript programming. Share to everyone for your reference. Specific as follows:The code is as follows:/** * Implements subclasses to inherit

Assigning values to variablesThis article is reproduced from http://hellobug.github.io/blog/javascript-variable-assignment/Let's start with a few examples to make sure the starting point is Halo State ~:PExample 1.1 1234 var a

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 to Use CSS to set the text shadow effect and css text shadow How to Use CSS to set the text shadow effect:Suggestion: writing code as much as possible can effectively improve learning efficiency and depth.Sometimes you need to add a shadow to

Three methods are available for using CSS to implement table fine border, and three methods are available for css. Speaking of tables, although with the development of front-end technology, div has blossomed everywhere and completely overturned the

IE9 parent container overflow: when the sub-container status changes, leading to the issue of extra space in the scroll bar, ie9overflow Every time IE is updated, there will be some amazing bugs, and we will bear them silently. This problem has

Introduction to hasLayout in IE browser, haslayout in IE browser Haslayout is an internal component of the Windows Internet Explorer rendering engine. In InternetExplorer, an element either calculates the size and organization of its own content, or

Six tips for Chrome Developer Tools: chrome developer The following is an article by Umar Hansa. Umar has a newsgroup. I am a fan of him. He kindly wrote this draft as a newsgroup at our request. I will ask him to introduce himself. Hey, I'm Umar. I