JavaScript

my summary of the sentence: The original value, whether it is a variable assignment or a function pass, does not change the original value, the reference value whether it is a variable assignment or a function pass, and if the new variable is

(1) Introduction to the use of the Eval function in JavaScript (2) How to execute global code within a function ► First, the use of eval, the content is relatively simple, familiar can skip. The Eval function receives an argument s, and if S is not

Code to detect the browser and its version Copy Code code as follows: Getbrowser:function () { var browser = { Msie:false, Firefox:false, Opera:false, Safari:false, Chrome:false, Netscape:false, appname: ' Unknown ', version:0

The implementation of this effect is key to the use of date objects and settimeout. A total of three examples, HTML structure as follows, do not add CSS style. Current time: Countdown to the university Entrance Examination: time

Save the following code as Common.js Class Library Features: 1.Trim (str)--Remove the spaces on either side of the string 2.XMLEncode (str)--XML encoding of strings 3.ShowLabel (STR,STR)--Mouse prompt function (display character, prompt

Remember earlier said to share with you "JavaScript design mode", the delay did not write because I lazy, really busy recently, busy work, busy travel (ah?) , the last few days free, and then the time to cash before the empty vernacular. Before you

1. Embedding rules JavaScript programs should be included in the. js file as much as possible in the form of in the page when called. JavaScript code is not specific to the page, you should try to avoid writing JavaScript code directly in the page.

The syntax for creating objects in JavaScript is the invocation of a function after the new operator. Such as Copy Code code as follows: var obj = new Object (); var date = new Date (); Operator new first creates a new

There is no doubt that, based on the principle of separation of performance and structure, direct import of a new style sheet is the best choice, but in some cases, such as we do a drag div, from the point of view of the set style, it is absolutely

The headline is a bit clumsy, but it's the key to understanding the data structure. The 4 terms in the title, corresponding in English are: shallow copy (note, not shadow copy), deep copy, pass by value, pass by reference (or pass by address). It's

First one:jsfiddleVery powerful JS online debugging tools, support a variety of application of a variety of mainstream framework, can be directly edited online editing: HTML, CSS, JavaScript, easy to use, but also can debug the results of a very

scope of a variable To understand closures, you must first understand JavaScript's special variable scope. The scope of a variable is nothing more than two kinds: global and local variables. The special point of the JavaScript language is that

To verify, I wrote a page to validate how memory leaks. The code is as follows Copy Code code as follows: Test Memory leaks Create Elements [BR] Delete Elements [BR] Test div is still there

Each language has its own special place, and for JavaScript, using VAR to declare variables of any type, the scripting language looks simple, but it takes a lot of experience to write elegant code. This article provides a list of seven details that

This article will briefly describe the properties and methods of some common objects in JavaScript, as well as several useful system functions. 　　 a series of methods　　JavaScript has a powerful string-processing function, with these series of

Its low learning threshold makes many people call it a pre-school scripting language, and another thing that makes people laugh is the notion of a dynamic language that uses a high standard of static data types. In fact, you and JavaScript are in

JavaScript has 3 event handles in the input state of the corresponding keyboard: KeyDown, KeyPress, and KeyUp. The corresponding meaning is: The key is pressed (press the button but has not been lifted), click the button (press and lift the button),

Confirm () method The Confirm () method displays a dialog box with the specified message and the OK and Cancel buttons. Note: If the user clicks the OK button, confirm () returns TRUE. If you click the Cancel button, confirm () returns false A:

A lot of people mention JS may think of web pages, in fact, JS can also have the initiative, do some other language can do things, and even can turn to dominate the browser, not by the browser dominate. This article will introduce a truly available

First, the prefaceThis is a simple story and it will be quicker to understand. So I only focus on the analysis, the other is the turn of the people think Oh! First of all, I can be less in-depth game development, because now programmers love to use