what in javascript

This article mainly analyzes call, apply, and bind methods in Javascript, and summarizes the connections and differences between call, apply, and bind methods at the end of this article, which has good reference value, let's take a look at it. The

For people who are engaged in or planning to engage in programming, object-oriented is a familiar word. Almost everyone can list some object-oriented programming languages, such as C ++, JAVA, c. In fact, object-oriented thinking is independent of

The following are the most common methods for creating objects in javascript. After reading this information, a beginner may feel dizzy or even worried. In fact, there is no need to worry about these methods. You only need to master one or two

This article describes two important knowledge points in JavaScript: expressions and statements. 1. statements and expressions Expressions in JavaScript are different from statements. an expression generates a value, which can be placed wherever a

In JavaScript, we can say that everythingisobject, so what is an object? An object is a set of variables and functions. In other object-oriented languages, objects are instantiated by classes. JavaScript is a prototype-based object-oriented language

This article mainly introduces the tips for using boolean operators | and & amp; in JavaScript. It is the basic knowledge in getting started with JavaScript, if you need it, you can refer to whether you have seen such code: a = a | "". javascript

The theme here is this, not far away. This is inherently simple and always points to the current instance of the class, which cannot be assigned a value. This assumes that this cannot be separated from the class/object, meaning that this is a common

Anyone who has used javascript knows that using variables in javascript is a headache and often produces incredible results. Most of the reasons are due to insufficient understanding of javascript variable-related knowledge. All variables in

First, let's look at the prototype programming paradigm that includes at least the following basic rules.? All the data are objects.? To get an object, instead of instantiating the class, find an object as a prototype and clone it.? The object

The best design in JavaScript is its function implementation, which is the basic unit of JS, and this is a particularly important attribute in the function.This is not the same as other languages, and the value of this in JavaScript depends on the

 01. Interface ---- interface in Javascript This article describes how to use native JavaScript code to simulate and implement interfaces.Preface As we all know, in Java, C #, and other languages, interfaces are defined by special keyword

Http://blog.163.com/wish4sun@126/blog/static/1438006652011312119516/ In JavaScript object-oriented programming, we often see these three keywords:This, prototype, constructor.Understanding these three keywords is the key point of understanding

JavaScript isClass-free, Object-oriented language, and as such, it uses prototypal inheritance instead of classical inheritance. this can be puzzling to programmers trained in conventional object-oriented versions like C ++ and Java. javaScript's

Preface: domestic front-end research is not inferior in some aspects to foreign countries. Although I do not understand this article, I appreciate this spirit of in-depth research! ------------------------------------- Reprint original --------------

Conversion of string translation using dictionaries in JavaScript This article mainly introduces how to convert strings by using dictionaries in JavaScript. It involves some javascript string conversion techniques and has some reference value. For

Event Review in JavaScript In fact, when I first learned JavaScript, I came into contact with a very simple line of code.alert('Hello JavaScript!!!')It explains what an event is. What is an event? Events are a very important method in JavaScript, a

How to Use Callback in JavaScript This article mainly introduces the Callback control process in JavaScript. This article describes some problems of callback and the optimized coding method and provides code examples. For more information,

Introduction to the call () method in Javascript This article mainly introduces the call () method in Javascript. This article describes the Call () syntax, Call () parameters, the call () method in Javascript, and Call () for more information, see  

The basic method for merging arrays in JavaScript is described. Here are two simple methods:First var mergeTo = [4,5,6], mergeFrom = [7,8,9]; mergeTo = mergeTo.concat(mergeFrom); mergeTo; // is: [4, 5, 6, 7, 8, 9] Or var a = [1,2], b = [3,4], c

Understanding Map in javascript instead of loop, javascriptmap This article introduces the benefits and convenience map brings to our js programming:1. What can Map do?Map can implement the for loop function: The advantage here is