JavaScript

Http://www.cnblogs.com/sink_cup/archive/2010/12/16/javascript_screen_width.html Javascript detects your resolution and the font size is set automatically Window. onresize  

Different ie Firefox values Region description JavaScript code Visible area width Document. Body. clientwidth High visible area of webpage Document. Body. clientheight Visible area width

background Leftmargin = 2 topmargin = 0 marginwidth = "0" marginheight = "0" oncontextmenu = "window. event. returnvalue = false "ondragstart = 'Return false' onselectstart = 'Return false' onselect = 'document. selection. empty () 'oncopy =

1. Why is arguments not an array? How to prove it? Arguments does not have array slice or other methods, so they are not of the array type. Verification: FunctionTestargs (){VaRArr = [1, 2, 3]; Console. Log (TypeofArguments. Slice); console.

The preventdefault method is used to prevent the occurrence of its default behavior from other things. This article provides a method that is compatible with various browsers to prevent default behaviors. JS blocks link redirection The

Last timeArticleThis section describes how to "encapsulate" data and methods to generate instances from prototype objects. Today we will introduce how to "inherit" between multiple prototype objects ". For example, there is an "animal" object,

Why is the current mainstreamProgramAre all objects created in the language? The following definition gives us an answer: In object-oriented languages, objects are defined as anything that people want to study. From the simplest integer to the

With years of software development experience, I know that it is better to do technology whatever you think. Even if you read the source code, you should not just read it, when doing this, you will experience the ingenious design of the masters.

With F12, Web developers can quickly debug JavaScript without leaving the browser.Code. Built into each Windows Internet Explorer 9 installation, the F12 tool provides debugging tools (such as breakpoint, monitoring, and local variable viewing) and

Preface Today, it was a little quick because I studied MVC in the morning and found that MVC is not suitable for front-end development. I have seen several front-end predecessors recommend using mvvm on the front-end, but I still don't know much

2.9 operator 2.9.1, unary operator The unary operator has only one parameter, that is, the object or value to be operated. 1. Delete:Delete references to previously defined object attributes or methods. However, this operator cannot delete

Baidu front-end interview questions,CodeAs follows: VaRA = 5; FunctionTest (){ A = 0; Alert (); Alert (This. ); VaRA; Alert (); } Test (); NewTest (); Run it on chrome. The result is: 0 5 0 0 Undefined 0 The first three results

Original article: http://www.nczonline.net/blog/2012/10/16/does-javascript-need-classes/ Note: During my one-year career, I have met someone who calls constructors as classes, and someone who calls objects as classes. this is more painful

Factory method Create and return specific types of objects. FunctionCreatecar (scolor, idoors, impg ){VaROtempcar =NewObject ();Otempcar. Color = scolor;Otempcar. Doors = idoors;Otempcar. mpg = impg;Otempcar. showcolor =Function(){Alert (This.

CodeAs follows: Function Numinstring (STR ){STR = Str. Replace (// ig ,""); VaR Strarr = Str. Split (""); VaR Result = [], beforelength, afterlength, reg; For ( VaR I = 0; I If (Str. indexof (strarr [I])! =-1 ){Beforelength = Str. length;Reg =

Window Object window operations Window objects are very useful for operating browser windows. developers can move or adjust the size of browser windows. You can perform these operations in four ways: MoveBy (dx, Dy): Move DX pixels horizontally

Create an array object // One VaR Avalues = New Array (); // Two VaR Avalues = New Array (20 ); // Three VaR Acolors =New Array ();Acolors [0] = "red ";Acolors [1] = "green ";Acolors [2] = "blue "; // Four VaR Acolors = New Array

Cross-platform event eventutil object Eventutil: VaR Eventutil = {Addeventhandler: Function (Otarget, seventtype, fnhandler ){ If (Otarget. addeventlistener) {otarget. addeventlistener (seventtype, fnhandler, False );} Else If (Otarget.

Inheritance Inheritance is an essential feature of object-oriented languages. That is, one class can reuse the methods and attributes of another class. In JavaScript, the inheritance methods include the following methods: Object impersonating, call

Title: javascript copy to clipboard in Firefox JavascriptCodeAs follows: Function Copy_to_clipboard (text ){ Try {Netscape. Security. privilegemanager. enableprivilege ("universalxpconnect ");} Catch (E ){Alert ('your Firefox Security Settings