javascript tetris

Document directory Syntax for creating a function: Example A function is an event-driven or reusable code block that is executed when it is called.Instance Function How to call a function. Functions with Parameters How to pass a variable to a function and how to use the variable in the function. Function 2 with Parameters How to pass multiple variables to the function, and how to use these variables in the function. Return Value Function

How to dynamically load javascript files and load javascript files using javascript How to dynamically load js files using javascript:Sometimes we need to dynamically load js files as needed. This chapter will briefly introduce how to implement this function, hoping to bring some help to friends who need it.I. Common loading methods: The above is a common meth

The HTML The above code will generate the following output in the HTML page: Hello World! Example: To insert Javascript into an HTML page, you need to use the can tell the browser where JavaScript starts and ends. Document. WriteA field is a standard JavaScript command used to write output to a page. After the document. Write command is input to the , the brow

In this topic, we will discuss JavaScript testing to check whether the component status and working method meet expectations. We will also introduce a testing method that facilitates the compilation of test cases. The tests mentioned here are of course the use of automated testing methods, which is an important part of software quality assurance (QA. In this topic, we will discuss JavaScript testing to chec

Recently, I have passed some tests to comprehensively parse the JavaScript code execution sequence of web pages in various browsers and record them here. We know that javaScript is an interpreted language, and its execution is top-down, but the understanding of each browser is slightly different, the upstream and downstream of the code, that is, the Program Stream, is crucial to the correctness of the progr

Recently, I have passed some tests to comprehensively parse the JavaScript code execution sequence of web pages in various browsers and record them here. We know that javaScript is an interpreted language, and its execution is top-down, but the understanding of each browser is slightly different, the upstream and downstream of the code, that is, the Program Stream, is crucial to the correctness of the progr

You also need to know about netive apps that can be used to develop Metro interfaces using JavaScript on Windows 8. In fact, OSX also provides similar functions,OS X v10.4 tiger providesDashboard ApplicationProgramTo add widgets. You can use the F4 hotkey to conveniently enable the dashboard. I have to say,Dashboard is also the birthplace of the well-known canvas Technology. Small programs running on dashboard, fully usedHTML, Dom, CSS,JavascriptTec

Javascript (1) Summary of javascript Array usage (1), javascript Array /* 1. The js array, like the arrays in other languages, is an ordered list of data, but the difference is that each item of the js array can save any type of data. In addition, the js array size can be dynamically adjusted. 2. Create an Array: * // (1) Use the Array constructor to create an Ar

Summary of javascript creation objects (javascript advanced programming) and javascript programming1. Factory Model This mode abstracts the process of creating a specific object and uses functions to encapsulate specific interfaces to create classes. function createStudent(name) { var o = new Object(); o.name = name; o.sayName = function(

This article mainly introduces how to implement the inheritance of javascript and how to learn javascript object-oriented. If you are interested, refer to the examples in this article to introduce 6 methods for implementing the inheritance of javascript, the content is as follows: 1. [prototype chain inheritance]The essence of implementation is to override the p

Document directory Event example: Events are behaviors that can be detected by JavaScript.Event Javascript enables us to create dynamic pages. Events are behaviors that can be detected by JavaScript. Each element in the web page can generate events that can trigger JavaScript Functions. For example, when a user clicks a button, an onclick event is generated

Javascript is a scripting language designed for interaction with Web pages. It is constructed by the following three departments l ECMAScript, defined by a ECMA-262, defining the rules and conventions of the javascript language, it is like the rules, specifications, and conventions specified for starting a game. L DOM: provides methods and interfaces for accessing and operating webpage content L BOM, which

Javascript: Javascript special effect: convert HTML into Javascript code automatically. Sometimes you need to use Javascript to enter common characters, such as a footer for every page. Here is a conversion script: SCRIPT function Preview (obj) {var TestWin = open (''); TestWin.doc ument. write (obj. value);} function

The 2.1.2 Delay script refers to the defer property and only applies to external scripts, that is, scripts that have defer properties.Delaying scripts at the bottom of the page is still the best choice due to the lack of uniform support for deferred scripting by various delay browsers and the fact that the defer attribute is no longer supported after HTML5.2.1.3 Asynchronous Script The second script may be executed before the first script, so it is important to ensure that two scripts are not d

JavaScript can be used to verify the input data in the HTML form before the data is sent to the server. The typical form data verified by JavaScript includes: Have you entered required items in the form?Is the email address entered by the user valid?Have you entered a valid date?Does the user input text in the data field (numeric field?Required (or required) project The following function is used to check

A reference type is a data structure used to organize data and functions together. This article mainly introduces the reference type of JavaScript tutorials. Reference Type A reference type is a data structure used to organize data and functions together. It is also often called a class, but this name is not appropriate. Although ECMAScript is technically an object-oriented language, it does not have basic structures such as classes and interfaces su

When JavaScript is used on pages, where should these JS Code be placed? Next, let's learn how to use JavaScript on the page. Where should these JS Code be put? Let's take a look. Generally, there are two ways to write on the interface and use. js files. 1.1 Head part on the Interface You can directly put it in the head label, as shown in the following code: TestPage

The condition statements in JavaScript are used to complete behaviors based on different conditions.Instance Switch statement How to compile a switch statement. Javascript switch statement If you want to execute one of several code blocks, you can use the switch statement:Syntax: switch(n){case 1:Execution Code Block 1break case 2:Execution Code Block 2break default:If n is neither 1 nor

JavaScript is not just a scripting language for writing Special webpage effects, but is now widely used in front-end interaction of websites. It is worth mentioning that the current Node sought after by Web developers. javaScript allows JavaScript to run in more environments, even on the server side of the website, so that this language has attracted attention ag

It is worth mentioning that the current Node sought after by Web developers. javaScript allows JavaScript to run in more environments, even on the server side of the website, so that this language has attracted attention again. Today, I will share with you 25 interesting JavaScript games to discover the charm of JavaScript