in loop

How we traverse the elements in the array. When JavaScript first started 20 years ago, you might have done array traversal: for (var index = 0; index After the ES5 is officially released, you can use the built-in foreach method to traverse the

Article Introduction: Each function we create has a prototype (prototype) attribute, which is a pointer to an object that is intended to contain properties and methods that can be shared by all instances of a particular type. If understood by

This article mainly introduces the differences between the forin loop of js and the foreach loop in java. The example analyzes the use skills of the forin loop of js and explains the differences between the use of the foreach loop and that of Java,

The in operator is a special operator in javascript. It can be used independently as a judgment operator and is often used to traverse object attributes in a for... in loop. I. Judgment Syntax Prop in objectName If the object pointed to by

The source of this article: "Object-oriented JavaScript" by Stoyan StefanovSource: Original translation of red Shi JunyuCopyright Disclaimer: If you are the original author of the original text and do not want this article to be published, you can

Loop is the basic function of most programming languages, and JS is no exception. The difference is that JS is an interpreted language and runs in a browser environment, the client's hardware and software conditions will have a great impact on the

The sixth chapter object-oriented programming1. Data properties[[Configurable]]: Indicates whether the property can be redefined by deleting the property from the delete. The default value is true.[[Enumerable]]: Indicates whether the property can

In JavaScript, all objects except the five primitive types (numbers, strings, Boolean values, null, and undefined) are objects. Therefore, I don't know how to continue learning objects? This article will share with you the in-depth study and summary

CSS (art part Knowledge, understanding) 1, CSS Overview 1.1, CSS is what?* CSS refers to cascading style sheetsStyle sheets: Where to store stylesStacking: One layer, one layer overlayTall and handsome and irritating 1.2, CSS has what role?*css is

1.if statements2.do-while statement: post-test Loop statement, The code of the loop body executes at least once.3.while statement: pre-test Loop Statement.4.for statement: pre-test Loop Statement.　　Note: There is no block-level scope in ecmascript,

1th Chapter Make yourself accustomed to JavaScript1th: understand the JavaScript version you useDecide which versions of JavaScript your application Supports.Make sure that the JavaScript features you use are supported for all environments that your

Objective:For iOS project development always meet a variety of collection traversal, out of curiosity about the various traversal efficiency, so prepare to write a test program testFirst: Declare a nsmutablearray, the amount of test data is 1000, 10,

The importance of break, continue, and return in the program. First, the break statement is usually used in loop statements and switch statements. when the break statement is used in do-while, for, and while loop statements, the program can

Key points for writing high quality JavaScript code in Xin Xing's notes, Xin Xing's javascript First this article is http://www.zhangxinxu.com/wordpress? P = 1173 Reading Notes. Readers can read the original text in the space of Xin Xu. I have

[Change the scale, background color, or frame rate of the output swf] In the "Navigator" window, right-click your project, select "Properties", select "ActionScript Compiler", and enter the required command in "Additional compiler arguments ". To

Deep Learning of JavaScript objects and deep learning of javascript In JavaScript, all objects except the five primitive types (numbers, strings, Boolean values, null, and undefined) are objects. Therefore, I don't know how to continue learning

As mentioned in the article on JavaScript creation objects: One problem with creating objects with constructors is that the same method for different instances of the same constructor is not the same, so we use prototypes to extract the public

JavaScript streamlined notes, excerpted from Liaoche's official website.[From] https://www.liaoxuefeng.com/wiki/001434446689867b27157e896e74d51a89c25cc8b43bdb3000' Use strict '; Strict modeJavaScript is strictly case sensitive.Nan = = = Nan;

"Change the scale, background color, or frame frequency of the output SWF" Right-click your item in the "Navigator" window frame > select "Properties" > select "ActionScript Compiler" > in "Additional Compiler arguments" Enter the command you

"Change the scale, background color, or frame frequency of the output SWF" Right-click your item in the "Navigator" window frame > select "Properties" > select "ActionScript Compiler" > in "Additional Compiler arguments" Enter the command you