javascript from scratch for beginners

Javascript basics and javascript beginners are recommended in javascript beginners. Some time ago, when I read the javascript advanced tutorial, I found many basic javascript concepts t

It has been a year since I started to get in touch with JS, and my mind has always been a bit boring. This is also often said in forums. So where is it? I always feel that I am not going deep in learning. Some simple things can be done but cannot be done with ease. Can you tell me more about this bitter talk? They all said, "I cannot tell you how to be specific? What is unspeakable? You can't say it, but you can't be specific. If you can't put the problem into practice, you can't solve it. This

It has been a year since I started to get in touch with JS, and my mind has always been a bit boring. This is also often said in forums. So where is it? I always feel that I am not going deep in learning. Some simple things can be done but cannot be done with ease. Can you tell me more about this bitter talk? They all said, "I cannot tell you how to be specific? What is unspeakable? You can't say it, but you can't be specific. If you can't put the problem into practice, you can't solve it. Thi

the basics necessary for JavaScript programming. 4) About Tech The About Tech Web site provides online learning solutions related to JavaScript and is primarily intended for beginners. This online series of tutorials can help you build your expertise from scratch and guide you through your ability to wri

through online video tutorials is certainly the best choice. While some of the online courses are really expensive, there are quite a few that are completely free, yes! You hear that, there is a good thing, you can master the important programming knowledge without spending money . And in today's article, we will work together to learn about the top ten free tutorials resources, from which you will be free, easy and efficient to learn JavaScript know

nomenclature recommended Spanish nomenclature, with lowercase letters b,f,i,s beginning to denote type, followed by uppercase beginning of meaningful words. Camel : The first letter is lowercase, followed by the first letter of a word.Pascal's Nomenclature (Pascal): capitalize the first letter of all words.Hungarian Nomenclature (Hungarian): adds the appropriate lowercase letter to the first name of the variable to identify the type of the variable, followed by the initial capitalization of th

This article mainly introduces the relevant information about the effect of javascript + canvas on the scratch card lottery. If you need it, you can refer to the simple scratch card effect using canvas. You can retest it every time you refresh it. Demo1 Simple scratch card lottery

have various problems). Solution: Encapsulate the code separately into two anonymous self-executing functions (function () {' Use strict '; var a = 4;var B = 3;console.log (A + b);}) ();(function () {var c = 6;var D = 7;console.log (c + D);}) ();5: Strict mode changes syntax and behaviorStrict mode has made some changes to JavaScript's syntax and behavior.1 : The global variable is explicitly declared. In normal mode, if a variable is assigned without a declaration, the default is the global va

chapter in the tutorial allows learners to perform their own actions and immediately see how their actions will result in JavaScript. 2) Learn-js The Learn JS site offers a wide range of online tutorials for those who are just starting to learn about JavaScript from scratch. It can run JavaScript code directly in

Four cases of this in JavaScript (non-strict mode) 1. When this function is the event handler, this points to the event source.2. When this function is a constructor, this points to the new object.3. This refers to the object to which the function belongs.4, when this function does not belong to the object, this point to the Window object"Utf-8"/> "Box" class="Box"style="height:100px, width:100px, background: #f3f3f3;">Learn from

, 0x7ecf conversion to decimal is 32463,ucs-2 with two bytes to encode characters, two bytes is 16 bit binary, 2 is 16 times equal to 65536, so UCS-2 can encode up to 65,536 characters.GBK Code:GBK full Name "Chinese character Code Extension code" (GBK "GB", "expand" the first letter of Hanyu Pinyin, English name: Chinese Internal Code specification). GBK downward is compatible with GB2312 encoding, which supports the ISO 10646.1 International standard upward, which is a connecting product of th

. property = value//set, add style attribute.Note: If the attribute is "-" linked, the "-" is removed and the first letter of the following word is capitalized. 2. Inline style and CSS cascading style common wayObject. Currentstyle. Properties IE is used to get the actual style attributes.getComputedStyle (object, null). Firefox is used to get the actual style attributes.Note: You can only get settings that cannot be set.7:dom Additions and deletions changeOne: Create nodes (Notes and document n

event occurs.Event.button: Returns an integer that indicates which mouse button was clicked when the event was triggered. 0 Specify the left mouse button, 1 specifies the mouse wheel, 2 specifies the right mouse button. However, the old version of IE does not comply with the specifications of the Internet , its Button property meaning as follows: 1 left mouse button 2 right mouse button 3 at the same time press 4 wheel 5 left button plus the wheel 6 right button plus the wheel 73 simultaneously

writing if in the window.onload call, proposed to put the anonymous function,//related to the scope of the problem, JS run to this error, can also adjust the location of JS reference　　　　Timer:Syntax: setinterval (function or code string, specified time (ms));Executes a function or a string of code in a specified period (in milliseconds).Clear Timer: clearinterval ();var num = 6;var timer = setinterval (function () {console.log (--num); if (num = = 0) {clearinterval (timer);}}, 1000);　　Learn abo

. Console.log (navigator.useragent);7:window Events OnResize: Window Scaling event. Window.onresize = function () {Console.log (2)} OnLoad: The Load event page is executed after it has finished loading. //Get browser window width/height Window.onload = function () {Console.log (document.documentElement.clientWidth) Console.log ( Document.documentElement.clientHeight)} Onscroll: Scrolling event. //Get browser scroll bar hidden width/height Chrome (body),

entire project team can struggle for a while in the "script quagmire. Therefore, misuse of JavaScript will bring tears. However, in this case, JavaScript is still widely used in the Web application field. The page beautification capability of JavaScript is indeed incomparable. Its front-end simplification capability is also quite effective. @Xixi searched for

browser to download the file immediately, but unlike defer, it is not guaranteed that async scripts are executed in the order they are specified, and it is recommended that asynchronous scripts do not modify the DOM during loading Asynchronous Script -Scripttype= "Text/javascript"Async= "Async"src= "Example1.js">Script>Scripttype= "Text/javascript"Async= "Async"src= "Example2.js">Script>2.3 Properties of t

elements, if there is a space between the UL and Li, it will be considered to be the content of the empty text node, so ul.childnodes[0] It is not the first LI element. Correspondingly,there is an empty row between the nodes, generally encountered this situation need to traverse all the child nodes and then determine the NodeType type, 1 is the element, 2 is the property, 3 is the text node, the detailed type can pass this address: Node.element_node= = 1Node.attribute_node= = 2Node.text_node= =

Deep understanding of the JavaScript series (23): JavaScript and DOM (on) -- also applies to beginners, javascriptdomDocument Object Model DOM (Document Object Model) is an API for content interaction with JavaScript. Javascript and DOM are usually taken as a whole, because

------------------- The abstract is based on the anonymous tutorial summary. I hope it will help beginners in JS, because it solves the many puzzles I learned about Js... Functions are the basis for modular program design. To compile complex Ajax applications, you must have a deeper understanding of functions. Functions in JavaScript are different from other languages. Each function is maintained and run as