JavaScript

Using the DOM to set up a text box 1. Control the number of characters entered by the userFor single-line text boxes and password entry boxes, you can use the MaxLength property to control the number of characters entered by the user.For multiline

In game development, a script as a resource file, like a picture video, is referenced by the engine, the advantage of using a script to play the game is that it can be updated online patch, especially for the Apple App Store audit period is very

For JavaScript errors, such as XXX undefined,syntaxerror, we are more familiar with, this article we discuss how the JavaScript error capture.Our team names the wrong JavaScript code as BADJS, and there is an open source Badjs project that captures

With the release of the HTML5 Standard Edition at the end of October this year, the future use of H5 will be more and more, which is what makes Web developers rejoice. However, there is a reality we have to see, that is, IE series browser also

This article I have written before, is to click on a new window to do operations in a new window, and then the value of the use of JS Parent.iframe.formname.inputname.value so that the reality of the new page values. Here we summarize a few common

Break statementInterrupts the current loop, or uses it with the label to break the associated statement. break [Label]; The optional label parameter specifies the label of the statement at the breakpoint. DescriptionBreak statements are typically

What are the hardest places to learn about JavaScript? I think the object is the hardest. Because the object model of JavaScript is unique and is different from other languages, beginners are not easy to master. The following is my study

Magnifier select Test can cover & lt;/option> [Ctrl + A All SELECT Note: If the need to introduce external JS need to refresh to perform] [Procedural notes] Mainly for the Magnifier class, the main methods are: Init: How

In the previous section of the JavaScript object-oriented namespace, you said how to define a JavaScript namespace, which is followed by a concept-class. Although there is no class keyword in JavaScript, we must have this idea as a developer.

Sigh is to ease the seriousness of the atmosphere and lead to today's topic, "JavaScript object-oriented programming," Next, we are around the object-oriented several major keywords: encapsulation, inheritance, polymorphism, expand. Encapsulation:

A regular expression that matches a Chinese character: Copy Code code as follows: [\u4e00-\u9fa5] Match Double-byte characters (including Chinese characters): Copy Code code as follows: [^\x00-\xff]

There are two kinds of declarations that can be used in loops: Break and continue. JavaScript Break and Continue declarations There are two special types of declarations that can be used within the loop: Break and continue. Break The break command

1. Creating Regular ExpressionsThe first way: note that the regular expression here cannot use single or double quotes, as follows var pattern1 =/[abc]/i; Match the first "a" or "B" or "C", case-insensitive The second way: created using the RegExp

Constructor property InstanceReturns the function created by the prototype of the MyVar object: var myvar = new Boolean (1); Myvar.constructor; Result output: function Boolean () {[native code]} Definitions and usageThe constructor

In JavaScript, mathematical methods can be grouped into the following categories: Constans (constant), power functions (exponentiation function), trigonometic functions (trigonometric function), rounding functions (rounding functions), random

Common regular expressions are as follows: Copy Code code as follows: "^-? [1-9]\\d*$],//integer "^[1-9]\\d*$",//Positive integer "^-[1-9]\\d*$",//Negative integer "^([+-]?) \\d*\\.? \\d+$ ",//number "^[1-9]\\d*|0$",//positive

Given the need for security, the object receives a lot of restrictions and now only has the following properties and methods left. The history history object has the attribute of length, which lists the number of items in the history. The history

Angular2 countdown component usage details, angular2 Usage Details The project encounters a countdown requirement. Considering that it will be used in other modules in the future, it encapsulates a component by itself. It is easy to reuse later. The

Javascript achieves Baidu Library-like scoring and JS library scoring As we all know on the Baidu Library sharing platform, today we will introduce you to the Baidu Library scoring function based on js through an example code. Let's show you first.

1. Common objects and function objectsIn JavaScript, everything is an object! But there are also differences between objects. It can be divided into common objects and Function objects. Objects and functions are built-in Function objects of JS. The