javascript complete reference

JavaScript is passed by value, but it is the case to know that the original value will change after delivery, or there will be a bug that you can't think of.One, by value pass--meta type inputTip: The arguments passed in by the meta-type (number, string, Boolean, null, undefined) are not affected by the invocation of the incoming variable, regardless of how it is manipulated inside the function.For example:var arr = [1, 2, 3, 4]var str = ' 1234 'funct

This article mainly introduces how WebGL uses FBO to implement cube Paster effect, and analyzes the specific steps and related techniques of WebGL to implement cube Paster effect in the form of a complete example, the demo source code is provided for readers to download and reference. If you need it, you can refer to the following example to describe how WebGL uses FBO to

= Pattern.exec (text) "Returns the result set" and pattern.test (text) "Returns True, false". The Text.match (pattern) method of string type is the same as pattern.exec (text) function type Arguments.callee () calls the current function, which is not supported by strict mode This refers to the function object on which the function is executed Caller This function holds a reference to a call to the current function and returns null

This article mainly introduces the basic types and reference types of JavaScript. The basic types also include type conversion. If you are interested, refer I. Value Type We mentioned the basic and reference types as early as we introduced the JS data types. But before talking about the two types, let's take a look at the types of variable values. In ECMAScript,

Detailed description of the most complete javascript parseInt functions in historySummary of the global parseInt function:ParseInt (numString, redix );The string to be converted to Int.Note:1. It can be a number or String. In any case, it will be converted to a String using String (numString); for example, parseInt (010); // 8 parseInt ("010 "); // 102. If there are spaces before and after numString, the sp

Today, I wroteCodeThe main function is to test the link between Servlet and JavaScript to complete the refreshing function. The main code is clear, and the core used is the XMLHTTPRequest object. First, the XMLHTTPRequest object uses five steps: In the following code, I will mark it. This timeProgramNote the following issues: 1. Remember to redeploy after creating a new project. 2. When creating a s

This example describes the JavaScript mouse sliding scoring control. Share to everyone for your reference. The implementation method is as follows: The wants this article to help you with your JavaScript programming.

The example in this article describes how JavaScript connects to an Access database. Share to everyone for your reference. The implementation method is as follows: var roc = Roc | | {}; roc.db = Roc.db | | {}; Create a connection roc.db.createDb = function () {var conn = new ActiveXObject ("ADODB. Connection "), FSO = new ActiveXObject (" Scripting.FileSystemObject "), connstr =" provider=microsoft.je

The example of this paper describes the effect of the circular swing of javascript+html5 canvas drawing. Share to everyone for your reference, specific as follows: The screenshot of the running effect is as follows: The specific code is as follows: More about JS effects related content Readers can view the site topics: "jquery animation and special effects usage Summary" and "jquery Common clas

This paper gives an example to describe the effect of JAVASCRIPT+HTML5 canvas production. Share to everyone for your reference, specific as follows: The screenshot of the running effect is as follows: The specific code is as follows: More about JS effects related content Readers can view the site topics: "jquery animation and special effects usage Summary" and "jquery Common classic Effects Sum