JavaScript

The array class can be defined as follows:var avalues = new Array ();If you know the length of the array beforehand, you can pass the length with the parametervar avalues = new Array (20);------------------the following 2 ways to define the same-----

The scope of a JavaScript variable is divided by the method block (that is, by a pair of curly braces {} of function). Remember, it is a function block, and for, while, if block is not the scope of the classification criteria, you can look at the

Math.pow (2,53)//2 power of 51 timesMath.Round (0.6)//roundingMath.cell (0.6)//Upward roundingMath.floor (0.6)//Down for roundingMath.Abs (-5)//absolute valueMath.max (2,53,20)//MAXMath.min (2,53,20)//minRandom number of math.random

This article describes the implementation of the model-view-controller pattern in JavaScript.I like JavaScript because it is one of the most flexible languages in the world. In JavaScript, programmers can choose a programming style based on their

Enter strict mode by the format script shownThe main differences between strict and normal modes are as follows:1, does not support octal expression, such asvar n = 023;2. With keyword not supported3. Cannot delete the variable (only the object

1.Let ' s Implement the Reject () function ...Cases:var function return num% 2 = = 0;}); = = [1, 3, 5]Soluction:function reject (array, iterator) { return Array.filter (function (x) {return!iterator (x)})}2.The numberofoccurrences function must

Pre-explained with var keywordLet's take a look at the results of this code execution:The code is as follows:alert (n);//Eject undefinedvar n = 10;The result of the popup is undefined, why not 10? Let's look at the results of the following code

First of all: the scope of JS is different from the scope of other languages, pay special attention to The concept of scope in JS:Represents the area in which a variable or function works, referring to the context in which they are executed, i.e.

JS age Calculation Method Based on birthday This article describes how to calculate the age of JavaScript Based on the birthday. Share it with you for your reference. The specific implementation method is as follows: ? 1 2 3 4 5 6 7 8 9

Canvas and canvas The last time I wrote the prize was a year ago. At that time, I was confused by Baidu's source code. This time, I asked my sister to write the code and thought about how to sort it out again. scratch effect  

Simple and complex jsp (small knowledge), and small knowledge of jsp PageEncoding and contentType attributes in the page tag in JSP The default value of pageEncoding is the default attribute of ISO-8859-1 contentType: text/html;Charset =

Use css3 or jquery to implement the switch button Effect Train of Thought: The function of this DEMO is to simulate the switch effect and enhance the native checkbox. The visual effect is roughly moving around a white square. Here we can directly

JS implements the method of loading different webpages within the framework after clicking the button. js framework This example describes how to load different web pages in the framework of JS after clicking the button. Share it with you for your

Javascript captures keys pressed on the keyboard. A small demo uses js to capture the key on the keyboard and then display the corresponding code value. press the key on the keyboard, the corresponding code is displayed in the text box

Details of this usage examples in js and details of jsthis instances This example describes how to use this in js. Share it with you for your reference. The details are as follows: 1. Point to window Global Variables Alert (this) // Returns [object

[ExtJs] Pie Chart The ExtJs pie chart is not as hard as the [ExtJs] bar chart, changing the color of each column (click to open the link), because the color of each piece of cake is naturally different, you do not need to write the Renderer yourself.

[ExtJs] query of the grid with paging table component interacting with the background database ExtJs table component Grid can be paged, And it interacts with the background database anytime, anywhere. Just like the List table control in VC's

AOP and OOP of yui3) This article mainly introduces the AOP and OOP of yui3. For more information, see First, put your hands in front of your chest to become a meditation: I went to life, or I was living myself? I didn't come up with the answer.

JQuery returns JSON data through Ajax JQuery returns JSON data through Ajax Recently, when using JQuery's ajax method, the returned data is required to be json data. The following problems are encountered during the processing process: when using

JQuery plug-in scroll for seamless scrolling Today, we will share with you a jquery. scroll plug-in for seamless Page scrolling. Supports Top, bottom, left, and right, fade in and out, scroll time settings, animation time settings, mouse stop