JavaScript

The principle is simple: right-click the mouse (OnContextMenu event) return FALSE to block the default right-click menu, then display the custom right-click menu, the menu display location is calculated by the event source's Clientx and clienty. [

The following code I tested in IE, Firefox, Chrome all through New Document It should be noted that must have otherwise it will not work under the IE6. The reasons are said to be as follows: Under IE COL, Colgroup, FRAMESET,

1.JavaScript hoisting (variable/function elevation) The following experiments are done through the Firefox console. Console.log (a); REFERENCEERROR:A is not defined Console.log (a); However, the results will be different if

The execution Environment (execution context) is one of the most important concepts in JavaScript. The execution environment defines other data that a variable or function has access to. Determine their own behavior. Each execution environment has a

string, number, Boolean, array, object, Null, Undefined JavaScript Array The following code creates an array named cars: var cars=new Array (); Cars[0]= "Audi"; Cars[1]= "BMW"; Cars[2]= "Volvo"; or (condensed array): var cars=new Array

Original Digest Self's front-end blog, Welcome to visitHttp://hacke2.github.io causes Just now Caigo let me reboot the Linshui Project Server, and I reviewed the project I did last year. At that time my mission is the park dynamic + configuration

This book should be 14 (or 15) bought, when people are more stupid, do not understand, hurriedly read dozens of pages on the shelf, but a bit very sure, this is a good book. Today finally came here, feeling a hurdle. A reference type is an object,

New New object is created with the constructor function. Define class var person = function (firstName) { this.firstname = firstName; }; Define method Person.prototype.sayHello = function () { console.log ("Hello, I ' m" +

In JavaScript, we know that there are two common ways to create objects, one is to use the object's direct volume: The object's direct quantity is a mapping table consisting of several value/key pairs, separated by a comma "," and the whole part is

This in the Java language Defining classes in Java often uses the This keyword, in most cases, to avoid naming conflicts, such as defining a point class in the example below, it is natural that you use X,y to name its attributes or member variables,

using XMLHttpRequest Browsers define their HTTP APIs on the XMLHttpRequest class. Each instance of this class represents a separate request/response pair, and the properties and methods of this object allow you to specify request details and

Code: clock ;/body> The radian of the hand, the minute hand, the second hand, to deduce the process: radians = number of angles * MATH.PI/180; Hand Hour: Turn the clock clockwise: that is, 360°,12 hour, so, clockwise 1 hours

To improve the performance of your site and reduce the size of all the files you return, you may want to load JavaScript (. js) files when you need them. In jquery, you can use the $.getscript function to load (download) JavaScript files on demand

The nature of the loosely typed JavaScript variable determines that it is only a name used to hold a particular value at a particular time. Because there is no provision that defines what data type values A variable must hold, the value of a

Long time no come to Iteye, as soon as I came back to see the top bar there are envelopes in the flash. Open a look, is the activity of reading. How to say, I actually bought the "JavaScript language" 2 years ago, can say 2 years time should also

JavaScript, the world's most popular programming language, has been labeled as a nightmare for Web development designers, and while the real nightmare is the DOM API, the scripting language that has been exploited by a large number of developers and

Array Arraymax Returns the maximum value in an array. Use the Math.max () with the extension operator (...) to get the maximum value in the array. Const ARRAYMAX = arr => math.max (... arr); Arraymax ([1, 5])-> 10 Arraymin

Native JavaScript implements Asynchrony in far less than 7 different ways,Can be divided into 3 categories,Delay type: settimeout (SetInterval is also available), Requestanimationframe, Setimmediate (IE10 and above)Type of listener event

Variable elevation of function scope in JavaScript When we declare a variable within a function with the keyword VAR, the scope of this variable is limited to the current function. Ascension: Within a scope, regardless of where a variable is

http://www.nowamagic.net/librarys/veda/detail/1655 JavaScript setdate () method The Setdate () method is used to set a day of one months. The syntax is Dateobject.setdate (day). Parameter day is required. Represents a number (1 ~ 31) of a day