JavaScript

varPeople =function(){ This. Name = "Jackey"; }; People.prototype.getName=function(){ return This. Name; }; varMan =function(){ This. Sex = "male"; People.call ( This); }; //disadvantage, name is a property in the

Today in the technical group, there is a child shoes asked the JavaScript delay loading picture problem, I am here to explain the principle and implementation method. Lazy loading is through the custom properties, the real IMG address into the

JavaScript built-in top-level functionsBuilt-in: ECMAscript's own function, ECMAscript will oftenWith some of the features that we don't need to know how he did it., just know how to call it.? The top layer, which can be called anywhere in the page.1

javascript为我们提供了一些非常有用的常用内部对象和方法。用户不需要用脚本来实现这些功能。这正是基于对象编程的真正目的。　　在javascript提供了string（字符串）、math（数值计算）和Date（日期）三种对象和其它一些相关的方法。从而为编程人员快速开发强大的脚本程序提供了非常有利的条件。1、常用内部对象　　在javascript中对于对象属性与方法的引用，有两种情况：其一是说该对象是静态对象，即在引用该对象的属性或方法时不需要为它创建实例；而另一种对象则在引用它的对象或方法

1, the data in the stack is not deleted arbitrarily.2, the data in the heap can be deleted arbitrarily. Note : variables defined with eval ("var a") are stored in the stack.The Var and function statements have a high priority in JavaScript and need

= is an assignment symbol, = = = equals, = = = is strictly equal to.For numeric values on both sides of the equal sign, if the type is different, the type is converted before the type = = = = = =.For example 3 and "3" in the = = Comparison true,

Attribute node:A property of a specified element node.The code is as follows:       " >         javascript    -->                which city do you like           Beijing      Shanghai      guangzhou      Shenzhen                   which stand-alone

      " >         javascript    -->                which city do you like           Beijing      Shanghai      guangzhou      Shenzhen                  which stand-alone game do you like           counter-Strike      Warcraft      Red Alert     

Domain name is divided into: first level domain name, two level domain name, three level domain name. Example:baidu.com (first-level domain name),www.baidu.com (level two domainname)tieba.baidu.com (two-leveldomain name),bbs.youa.baidu.com (Level

Offline application and client storage (i) offline detectionThe Navigator.online property, a value of true, indicates that the device can surf the Internet, otherwise offline, but differs in different browsers. Using Navigator.online alone does not

function Quicksort (arr) { function Q (start,end) { if (start>=end) {return;} var pivot = start, temp = Arr[pivot], i = start+1; for (; i if (arr[i] var s = arr.splice (i,1) [0]; Arr.splice (start,0,s);

1. Event Binding:AddEventListener, RemoveEventListener. is an event binding at the DOM2 levelAttachevent, DetachEvent is an event binding for IE.2. Event object:Because IE must be referenced by window when using the event.Event = Event | |

For loopfor (var i=1; i{}alert (i)//output 4;Here I declare whether or not all are global variables.Put a for loop inside a functionvar i = 0;function Test () {for (Var i=0;i{}}Test ();Alert (i)If no var is added, output 11,Added Var, output 0This

The essence of JavaScript is a great book in which the author lists 12 of the dross in the JavaScript language that he considers to be in the appendix.I recently started to read the front-end blog, which read Nanyi's "12 kinds of inappropriate

Usage of for in jsResolution: for... in statementExecute one or more statements for each attribute of an object or each element of an array. For (variable in [object | array]) ParametersVariable is required. A variable, which can be any attribute

Javascript basics-mouse events, system dialogs, etc.1. mouse events(1) onclick: the user clicks the left mouse button, and when the focus is on a button, the user presses the Enter key, The onclick event occurs.(2) ondblclick: An ondblclick event

Analysis of the each method in jQueryBefore reading how jQuery source code implements the each method, let's take a look at the native Implementation of js. ECMAScript 5 defines a forEach method for the array. This method accepts two parameters: the

Command First, let's take a look at a complete parameter example and then introduce the role and usage of each parameter in detail: copy the code angular. module ('myapp', []). directive ('myctive', function () {return {restrict: String, priority:

The most popular Node. JS backend framework in 2014 is recommended. The Node. js framework is a javascript framework that helps you build website application services. It helps you develop Web applications faster. Node. js is a Chrome-based

Nodejs simple getting started tutorial (3): process, nodejs simple Although Node itself has multiple threads, the JavaScript running on v8 is single-threaded. The child_process module of Node is used to create sub-processes. We can use the