JavaScript

The implementation of inheritance is mainly based on the prototype chain.1, the basic idea of the prototype chain is to use the prototype to let one reference type inherit the properties and methods of another reference type1 functionParent () {2

The n-m of data between1 To find the area of a circle1 function Mianji (r) {2 var b; 3 B=math.pi*math.pow (r,2); 4 return b; 5 }Find the minimum value of a set of numbers1Sort an array, from small to large1JavaScript function Little

JavascriptArray Object Array ObjectThe Array object is used to store multiple values in a variable:var cars = ["Saab", "Volvo", "BMW"]; The first array element has an index value of 0, a second index value of 1, and so on.For more

Unary operators:1. Increment + + decrement-- var userage = 25console.log (///25-remains as-is userage,//26-Adds 1 on the original base and returns ++userage,//25-minus 1 on the original basis and returns --userage,///25-return first and then

JavaScript consists of ECMAScript: the core part as an interpreter. There is almost no compatibility issue with Dom:document Object Model, which operates the entry of HTML pages. Some operations are not compatible. Bom:browser Object Model, and

Objective:In actual project development, date selection is a very common and important issue, in the form of design to date validation, if you let the user input time, then it is not advisable to use the regular to verify its correctness, because he

A closure refers to a function that has access to a variable in another function scope.--The third edition of the Advanced JavaScript program My first understanding of closures comes from the "senior three", first of all only through the "right"

JavaScript Variable Declaration PromotionThe part of the variable promotion is just the declaration of the variable, and the assignment statement and the executable code logic remain in place.Second, in the basic statement (or code block) (such as:

1. Declaring methods for arrays(1): Arrayobj = new Array (); Creates an array.Copy the code code as follows:var arr1 = new Array ();(2): Arrayobj = new Array ([size]) Create an array and specify the length, note not the upper bound, is the

Reprinted from: http://www.cnblogs.com/yugege/p/5169998.htmlJavaScript is an event-driven language (especially when used in DOM operations), and we often need to bind a variety of events to the DOM. However, due to the lack of power in the low

JavaScript is run in the browser, so for JavaScript to read local files do not want C + + and Java as easy. There are many ways to read local files on the web, many of them using ActiveXObject controls. ActiveXObject is unique to Microsoft, it can

1. Write JS code directly in HTML2. Define a function to assign a value to the On_xxx_ property of an element in HTML3. Register with JavaScriptdocument.getElementById (' btn '). Onclick=f1;document.getelementbyid (' btn '). Onclick=function () {};4.

Global executionFirst, let's look at what it is in the global context:Browser:Console.log (this);Window {speechsynthesis:speechsynthesis, caches:cachestorage, Localstorage:storage, Sessionstorage:storage, Webkitstorageinfo:deprecatedstorageinfo

Javascript is an object-based (object-based) language, and everything you encounter is almost always an object. However, it is not a true object-oriented programming (OOP) language because it has no syntax class (class).So, what should we do if we

1. What is JavaScript-it is a scripting language that requires a host file, and its host file is an HTML file.JavaScript is a scripting language that is more complex than HTML. But even if you don't know programming before, don't worry, because

BOM Browser Object ModelA BOM (browser object Model) that provides objects that interact with a browser window.first, window ObjectThe Window object represents the entire browser window.Window objects are supported by all Browsers. It represents a

DOM Document Object ModelThe DOM Document Object model, which defines the interface for manipulating document Objects.The DOM represents an HTML document as a family tree, using tokens such as parent, child, sibling (brother) to indicate the

CSS3--3D flip album, css33d flip The transform attribute and the transition attribute are combined with jQuery code to implement the flip function. 1 2 3 4 5 3d flip album 6 7 75 100 101 102 103 104 1 105 2 106 3 107 4 108 109

Angularjs source code parsing scope, angularjss.pdf Introduction In the ng ecosystem, scope is at the core. The underlying layer of the two-way binding claimed by ng is actually implemented by scope, this chapter mainly analyzes the watch mechanism,

Js achieves simple Effect of switching between image fade-in and fade-out, while js achieves image fade-in and fade-out The examples in this article share the detailed code for switching between the js image fade-in and fade-out for your reference.