javascript es6 class

It's classname, not class. Note that JavaScript uses classname to access the class attribute because class is a reserved keyword, because in the future JavaScript might begin to support classes like Java. When we discussed the style attribute, we had a problem with tricky

To set the style of an element by using the ClassName property: The id= "P1" element is added to the "class name one" style by classname. When you click the "Add Style" button, the first paragraph of text adds a style. The id= "P2" element is modified by classname to the style "class name is two". When you click the "Change Appearance" button, the second paragraph of text changes style.

I will not ' use strict ', so the article is not rigorous. Originally, the current JavaScript is what you love to see it what it is.For example, what do you think of this remark:var o = new SomeClass ();Create a pair of classes, yes. At first glance, you don't know if this is C # or JavaScript. What about the definition of this class?function SomeClass () { (fun

Class is one of the core concepts of object-oriented programming. A class represents the abstraction of a category of things with similar attributes. Starting with this article, we will formally enter the object-oriented part of JavaScript. The first thing to note is that there is no "class" keyword in

. 12 lt; Link href= "Default.css" rel= "stylesheet" Span class= "crayon-h" > type= "text/css" /gt lt; Script Type="text/javascript" src="Showhide.js"GT; lt; /scriptGT; Forget to add your CSS and Javascript files to the XCode project (if is using external files).Some additional actions have the to is taken

But there is no class concept in JavaScript, the so-called class is also simulated, through the function of the closure to simulate the class members and private members (for closures can see crossing boundaries: Closures)。 Here we will look at the "class" in

In small projects for JavaScript use, just write a few function on the line. But in large projects, especially in the development of the pursuit of a good user experience of the site, such as SNS, will use a lot of javascrpt, sometimes JavaScript workload than C #, then write a bunch of function, it will appear very messy, disorganized, even a naming conflict, It's cumbersome to manage and maintain. In this

do is often incredible, and some functions can even be equivalent to the desktop program. Now we can start with a javascript development framework prototype_1.3.1 (prototype. I would like to introduce the advanced javascript applications first, but I am afraid that the level is not enough and that it is not organized. Therefore, combined with prototype, I will mention js syntax usage by the way. The follo

= "createdom ()";Var title = "hello ";$ (Obj). append ("" + title + "");} Don't tell me that you have never seen the above Code. To be honest, the above Code is indeed fast and simple to call. If the first two functions are not enough to trigger your indignation, so the third function should make you feel a little eager to greet the creator of the Code. Yes, the third function directly triggers my decision to use object-oriented. In fact, I can transform the third function into the following.

In daily website development and web application development, we often need to effectively call functions related to date and time formats for Javascript processing, javascript contains some of the most basic built-in processing methods. Of course, if you have time, you can develop and compile the required methods by yourself. However, it is certainly a better way to effectively use the

When using some Javascript frameworks, you may see similar codeCopy codeThe Code is as follows:Var MyClass = new Class ({Initialize: function (param ,...){This. param = param;...},Func1: function (...){...}});Var myObj = new MyClass (param );MyObj. func1 (...);This is a typical object-oriented class mechanism application, which is clearer and more natural than th

Enrich your JavaScript library each good developer will form its own class library, and as a Java developer, we will also write a bunch of tools to simplify our development efforts. But as a full-station siege Lion, not just understand the formation of Java class Library, JavaScript

In JavaScript, a function is actually an object, each function is an instance of a function class, and since it has its own properties and methods, the function name is actually a pointer to a function object and is not bound to a function.Declaration of a functionWay one: Conventional wayfunction sum1 (num1,num2) {2 return num1+3} Mode two: function expressionvar sum2=function(num1,num2) {2 ret

JavaScript as a weak type of speech, there is no similar to the concept of "class" in java,c#, but there are many times in the actual development of such requirements, there are now know that there are two ways to simulate.1. By declaring an object, you can have the following code:var people = { age:12, name: "Jack", Sex: "Male", setage:function (value) { this.age = va

containing, and 30 Simple enough, now S is a 3-element stream:10, and 30; In a sequential order. We can use S.length () to look at the length of this stream, and use S.item (i) to retrieve an element from it by index. You can also get the first element of the stream by calling S.head (). Let's actually do the following: Copy Code code as follows: var s = stream.make (10, 20, 30); Console.log (S.length ()); Outputs 3 Console.log (S.head ()); Outputs 10 Console.log (S.item (

Class Array Object Ah, what difference does it have with a real array object? Can't say that old Maitai, only know the function of arguments object is a class array object, also has the length property, other? Dry Goods on the ministry:First, let's talk about arrays:1, the Length property is automatically updated when a new element is added to the list.2, set length to a smaller value to truncate the array.

object is intended to allow each instantiated object to share certain properties. The implementation of a class is based on its prototype inheritance mechanism. If all two instances inherit attributes from the same prototype object, we say that they are instances of the same class.An important feature of classes in JavaScript-----dynamically inheritable.Defining a class