JavaScript

1Page display: B,a,2,3,1,4,[object Object]Remove duplicate elements from an array in JavaScript

Basic concept One, case-sensitiveEverything in ECMAScript (variables, function names, operators) is case-sensitive.The variable name test and test represent two different variables, respectively.Second, identifiersThe so-called identifier refers to

The first part of this series introduces the basic wording of the JavaScript module, and today describes how to use the module in a standardized way, first think about why the module is important? Next for your detailed introduction, interested

JavaScript cancer in the language ( up )recently turned over the JavaScript the essence of language, JS with a further understanding, especially JS the bad features, below, combined with the key points in the book, to share with you JS a few bad

HTML string refers to the ' aklsdjfklsjdfl ' a string with an HTML special symbol, and we usually have to deal with it and then output it to avoid outputting it as a true HTML element, that is, the If the string is very long and there are many

First, classificationBasic data type: Undefined, null, string, Boolean, numberComplex data type: ObjectThe properties of object are defined in the form of unordered name and value pairs (name:value)Second, detailed1, undefined:undefined type has

IsNaN () cannot determine if a variable is a numeric type, and the value of IsNaN (123) is False,isnan (' 123 ') and false.The actual function of IsNaN () is not consistent with its name IsNaN, IsNaN (NaN) value is True,isnan (number ("XYZ")) value

MooTools is a collection of JavaScript utilities designed for the intermediate to advanced JavaScript developer. It allows to write powerful and flexible code with its elegant, well documented, and coherent APIs.MooTools code is

Frameworks such as Javascript:angular in the 2015 will be replaced by librariesYoung2014-12-16 Note * This article expresses the view that the holistic solution such as angular and ember will be smaller and more focused (with an excerpt), and some

The 1.Web browser downloads the contents of the document based on the URL address, creates documents objects, parses Web pages, HTML elements, and contains textual content, adding these nodes to the DOM tree. At this stage, the value of the Document.

// the original array var array = ["One", "one", "four"]; // Splice (position, Numberofitemstoremove, item) // stitching function (index position, number of elements to delete, Element)Array.splice (2, 0, "three"); array; // now the array is like

How to set default parameter values for functions in JavaScript (JS), here are a few ways to refer to them.The first method:Function Example (A, B) {var a = Arguments[0]? arguments[0]: 1;//Set the default value for parameter A to 1var B = arguments[1

The complete implementation method of jQuery Old Huang Li and jquery Old Huang Li The example in this article describes how to implement jQuery's old calendar. Share it with you for your reference. The implementation method is analyzed as

How to sort js headers and js Headers This article describes how to sort js headers. Share it with you for your reference. The specific implementation method is as follows: Copy codeThe Code is as follows: I hope this article will help you design

Js object-oriented static method and static property instance analysis, js instance analysis This article describes the js object-oriented static methods and static attributes. Share it with you for your reference. The specific analysis is as

DIV + CSS standard naming set, divcss standard set When we develop CSS + DIV web pages (Xhtml), the confusing and tangled thing is CSS naming. In particular, it is a good way for new users to know where to name and how to name them.Naming rules: 1)

JavaScript Validation form instance If you are creating a responsive site that contains some input forms, you should verify user input data. If you have to verify the name, last name, Email, username, age, compression code, and other fields of a

Javascript uses prototype to complete single inheritance, and jsprototype to inherit 1. Use prototype to complete single inheritance. Copy codeThe Code is as follows:// Define A ClassFunction (){}// For Class A dynamic call attribute color, and

Amazing node. js Reading Notes: mongodb database interaction, node. jsmongodb This week, I learned how to interact with nodejs databases and used the jade template to build a user-verified website. I encountered several problems. 1. mongodb version

Share the javascript judgment integer method, javascript integer There are two methods to judge integers: Regular Expression and verbatim expression. Because the efficiency of the word-by-word judgment is too low, we will not describe it here.