JavaScript

Grammar:Case-sensitive for defining variablesStrict mode: ES5 introduce ' use strict ', in strict mode will appear in the non-strict mode through the program appeared bugVariable: Define the variable keyword: var, note that you must initialize the

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Write very well, understand a lot, hereby forward the recordTransferred from: http://blog.csdn.net/tom_221x/archive/2010/02/22/5316675.aspxIn JavaScript , all objects inherit from the object prototype, and function acts as the constructor for the

Script> vararr= [2,3,6,7,9]; //javascriptin theForEachand theMapmethod arr.ForEach(function(value,Index){//(value,Index) Console.Log(value);}); arr.Map(function(value,Index){//(value,Index) Console.Log(value);});

The point of the phrase "Everything is Object" is how to understand the concept of "object".--Of course, not all of them are objects, and value types are not objects.First of all, let's look at a common function--typeof () in JavaScript. typeof

1 Dynamic Type languageThe static type language compiles when the variable type is determined, and the variable type of the dynamic type language is given a value after the variable is assigned to the program when it is run.The advantages of static

palindrome * *"123" changed to "123321""abc321" changed to "ABCD321123CBA"function fn (str) {Convert string to string array (with or without spaces) var arr=str.split ('); Console.log (arr);Reverses the order of string arrays var

3.1. Identifiers, built-in functions, objects according to the hump nomenclature; for example: Firstsecond;3.2.ECMA5 introduces the strict mode concept, and the script uses strict mode to add "use strict" at the top of the document;3.3. Strict mode

The two functions are used to traverse the object, but why is there a for-in statement that also has a for every in statement, and then looked at the next for every in development document, for every in is published as part of the E4X standard in

1 varassert = Require (' assert ');2Describe (' test ',function() {3It (' COC ',function() {4 varTESTCARD01 = Checkhkidcard ("AB987654 (2)");5Assert (testCard01,true);6 7 varTESTCARD02 = Checkhkidcard ("G123456 (A)");8Assert.equal

JavaScript achieves window jitter and javascript window Jitter Principles Jitter is actually a special form of reciprocating motion, but reciprocating motion is an infinite motion without friction, and the speed is the reference; and jitter is the

Detailed description of the application of the built-in reduce function in Javascript, javascriptreduce Preface In general, you can usereduceThe method implementation logic can be passed throughforEachAlthough it is unclear how the browser's js

Angularjs method for setting global variables summary, angularjs global variables Three methods for setting global variables in AngularJS Angularjs has two ways to set global variables. In addition, there are three methods to set global variables in

Detailed description of JavaScript reduce and reduceRight, reducereduceright Reduce method (ascending) Syntax: Array1.reduce (callbackfn [, initialValue]) Parameters Definition Array1 Required. An array object.

Connection reset by peer problem summary and solution, connectionpeer I searched for Chinese and English websites, searched the corners I could find, found the cause and principle of the fault, and how to solve the problem. Here I will record it and

Jqurey + Jscex build the game strength bar, jqureyjscex This article introduces jqurey + Jscex to create a strong game. If you have played a table tennis game, you will not be unfamiliar with the concept of strong bars, such: In fact, similar

Develop message pushing implementation code and code I recently developed a public account and want to push messages like this. I sent the edited message to an application group in the enterprise account in the form of text. Here I will take a note,

How browsers work After entering a URL in a browser, a beautiful page is displayed in front of us. What happened in the middle? For a common user, you may not need to think about this problem. But as a front-end developer or a developer who wants to

Four css writing methods and four css writing methods Priority: external style Priority, that is, the right of the selector with the same name will overwrite the left 1. Internal Style Sheets 2. Use the link tag to declare the use of

Usage of the keyword in JavaScript: The for-in loop should be used to traverse non-array objects. the for-in loop is also called "enumeration ". Array elements are iterated but not recommended, because the order cannot be ensured. If an attribute is