es5 javascript tutorial

events you will learn in this tutorial. JavaScript: modifying HTML content Using JavaScript to process HTML content is very powerful. Instance X = document. getElementById ("demo") // search for the element x. innerHTML = "Hello JavaScript"; // change the content You will often see document. getElementByID ("some id "

Javascript amp; DHTML instance programming (Tutorial) DOM basics and basic APIs 1. What is DOM? What is DOM? DOM is a Document Object Model (Document Object Model), a set of API Interfaces Based on browser programming (in this tutorial, it can be said that it is DHTML programming). W3C introduces the Recommendation Standard, each browser has some subtle differen

JavaScript advanced tutorial (Lesson 1) You are welcome to continue with the Javascript advanced tutorial. Before that, we have learned the basic Javascript tutorial. In this phase of study, we will continue to learn the issues th

this tool is called extrusion (crunching), and simply deletes all comments and line breaks. The documentation for this tool is said to save 20%~50% bandwidth. Using the crunch mode, you can see that the size of the JavaScript file is reduced by 30%. The highest level of compression in this tool is called compression (compressing), is a real compression mechanism for the actual compression of JavaScript so

should be: function () {functional body;} Because it is an anonymous function, there is generally no parameter passed to him. Why do you want to create an anonymous function? Under what circumstances the anonymous function is used. There are two common scenarios for anonymous functions, one is callback function and the other is direct execution function. eg In the above code, two alert boxes are output sequentially. The first alert box has a content of B and the second is a. W

JavaScript elementary tutorial (Lesson 3) This course aims to call the target name. In this example, the window name is yer_new_window. Now that we have simply reviewed the href goal, we should start learning to open a window in JavaScript. Window Opening in HTML is very common, but there are also some defects. the user's browser determines what the window look

You are welcome to continue to learn the JavaScript Advanced tutorial. Before that we had learned the JavaScript beginner tutorial. In this stage of study we will continue to study in the last tutorial has not had time to talk about the problem. I will also show you many of

javascript| Tutorial JavaScript is a scripting language that is based on object and event-driven and has a secure performance. It is designed to work with HTML Hypertext Markup Language, Java scripting language (Java applets) to link multiple objects in a Web page, interact with web customers, and so on to develop client applications. It is implemented in the sta

hexadecimal. The expression of the octal number is to add "0" before the number. For example, "0123" indicates that the octal number is "123 ". In hexadecimal notation, "0x" is added: "0xEF" indicates the hexadecimal number "EF ".Float is a "real" type that can store decimals. Data shows that some platforms do not support floating-point variables stably. Do not use the floating point type if you do not need it.String type is a string of up to zero characters enclosed by quotation marks "and. Yo

javascript| Tutorial The JavaScript language is object-based (object-based) rather than object-oriented (object-oriented). It is said to be an object-based language, mainly because it does not provide many features such as abstraction, inheritance, overloading, and so on object-oriented languages. Instead, the complex objects created by other languages are unifie

decimal, octal, or hexadecimal. The expression of the octal number is to add "0" before the number. For example, "0123" indicates that the octal number is "123 ". In hexadecimal notation, "0x" is added: "0xEF" indicates the hexadecimal number "EF ".Float is a "real" type that can store decimals. Data shows that some platforms do not support floating-point variables stably. Do not use the floating point type if you do not need it.String type is a string of up to zero characters enclosed by quota

expression of the octal number is to add "0" before the number. For example, "0123" indicates that the octal number is "123 ". In hexadecimal notation, "0x" is added: "0xEF" indicates the hexadecimal number "EF ".Float is a "real" type that can store decimals. Data shows that some platforms do not support floating-point variables stably. Do not use the floating point type if you do not need it.String type is a string of up to zero characters enclosed by quotation marks "and. You can decide whet

We assume that the reader of this book has at least a rudimentary knowledge of the practice of JavaScript. If you want to provide a comprehensive tutorial on JavaScript, this in itself requires a complete book to make it clear, so here we do not intend to introduce the language in detail. Instead, this section simply discusses some of the potentially obscure adva

method exists on prototype and is shared by all instances.This method is basically the best solution in the current ES5 environment. However, there is still a fatal defect: the scattered list privateData is strongly referenced by each instance, so that the instance cannot be reclaimed. If there are a large number of instances, it will inevitably lead to memory leak.The essence of the above problems is the JavaScr