Html JavaScript Web Authoring and Development Full Learning Handbook

Html JavaScript Web Authoring and Development Full Learning HandbookHTML TechnologyChapter HTML Primer1.1 What is HTMLFeatures of 1.1.1 HTML1.1.2 History of HTML1.2 Basic structure of HTML files1.2.1 HTML file structure1.2.2 Writing HTML files note

Exercise: Do not use the JavaScript built-in parseint () function to implement a string2int () function with map and reduce operations

This exercise is from the Liaoche JS tutorial. The answer is self-written.function functions are described as follows:Turn a string 13579 into a Array -- [1, 3, 5, 7, 9] and then use reduce() it to write a function that converts the string to number.

JavaScript for the front-end base

First, JavaScript introduction method1. Write code in script tag2. Introduction of additional JS filesSecond, JavaScript language specification1. CommentsThis is a single-line comment/*This is a multi-line comment*/2, TerminatorThe language in

Javascript you don't know, okay, it's something I don't know.

Nan represents a result of an operation that does not produce normal results. It does not equal any value, including its own. Can be detected with isNaN (number). Like a string in Java, the string in JS is immutable. This means that once a string

Non-blocking loading strategy for high performance javascript--scripts

JavaScript's performance in the browser can be said to be the most important usability issue that front-end developers face. In Yahoo's Yslow23 rule, one of them is to put JS on the bottom of the line. The reason is that, in fact, most browsers use

JavaScript Creation Object--constructor mode

1 functionPerson (name, age) {2 This. Name =name;3 This. Age =Age ;4 This. Eat =function() {5Alert ("Eating ...");6 }7 }8 varP1 =NewPerson ("cai10", 21);9 varP2 =NewPerson ("cai20", 27);Tenalert (p1.name);//cai10 Onealert (p1.age);

Operators of JavaScript knowledge points

one, arithmetic operators and assignment operatorsThe arithmetic operators provided by JavaScript have +,-, *,/,%. The value after the operation is assigned by =. For x = x operator y, we can also apply the compound assignment operator, which means

JavaScript scope principle (i)--scope chain

I. Description of scopeThere is an incisive description of scopes in the JavaScript authoritative guide: "The functions in JavaScript run in their defined scopes, not in the scopes they are executed in." ”In JavaScript, the concept of scopes is

JavaScript authoritative Guide (6)-Objects

JavaScript objects can inherit properties from an object called a prototype, and this " Archetypal inheritance " (Prototypal inheritance) is a core feature of JavaScript. In addition to strings, numbers, true, false, NULL, and undefined, the values

JavaScript's Emerging API

JavaScript's Emerging APICategory: JavaScript2012-12-31 16:02 215 people read comments (0) favorite reports Many APIs have specific prefixes, such as Microsoft's MS, Google, and Safari's WebKit. These new APIs remove the previous prefix and the

"JavaScript" a dynamic time synchronized to local time

This is a very simple example of what a few lines of code can do after JavaScript,But for some people who have not been in touch with JavaScript, almost a big project, and then on the Internet to search for code, and then in the vast HTML code to

JavaScript basics about constructors, the new keyword, and the This keyword (009)

1. Always remember to use the New keyword to execute the constructor.As mentioned earlier, you can use constructors to create JavaScript objects that use the New keyword when used, but what if you forget to write the new keyword? In fact, this

In-depth understanding of the JavaScript execution context (execution context)

This article transferred from: http://blogread.cn/it/article/6178In this article, we will take a closer look at the most basic and important concepts in execution context-JavaScript. After reading this article, you will understand what the

The relationship between __proto__ and prototype in JavaScript

__proto__ of all constructors/functions point to Function.prototype, which is an empty function 123456789 Number.__proto__ === Function.prototype  // trueBoolean.__proto__ === Function.prototype // trueString.__proto__ ===

Javascript you don't know about.

Nan represents a result of an operation that does not produce normal results. It does not equal any value, including its own. Can be detected with isNaN (number). Like a string in Java, the string in JS is immutable. This means that once a string

JavaScript decimal converts to integers

Last year, a colleague asked me how to convert decimals into integers (minus decimal places) in JavaScript, when I answered parseint directly. In fact, there was no other way to think about the problem. But recently, while looking at someone else's

Something you might not know about JavaScript.

Nan represents a result of an operation that does not produce normal results. It does not equal any value, including its own. Can be detected with isNaN (number). Like a string in Java, the string in JS is immutable. This means that once a string

JavaScript inheritance basics, prototype chain, borrowing constructor, mixed mode, prototype inheritance, parasitic inheritance, parasitic combined inheritance

A good explanation of JavaScript inheritance, but slow to explain now. Don't say much nonsense, go straight to the chase.Since you want to understand the inheritance, prove that you have a certain understanding of JavaScript object-oriented, such as

A JavaScript compression tool: x2jscompactor

A JavaScript compression tool written last year for JS compression of x2blog.cn. But it has never been released. Now I want to add Article It's hard to update a blog. Overview:X2javascriptcompactor can Package Multiple Javascript script files

Interesting methods for String and Array Operations on JavaScript strings

Strings and arrays are commonly used in programming. Therefore, the programming language uses String and Array as the basic types, it also provides many string and array methods to simplify string operations. JavaScript also provides the String and

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