


I believe everyone is familiar with the name "JavaScript", but only a small group of people understand its use and how to build applications. Of course, this "small group" of people refers to promising young people, network programmers and IT professionals with strong technical skills. But to a newbie or outsider, "JavaScript" is just another obscure term in the complex discipline of computer programming. So, what exactly is JavaScript? If you have working experience in the computer field, you must not miss the powerful JavaScript.
It is the most well-known web page scripting language. It is also widely used in game development and creation of desktop and mobile applications. In addition, drop-down navigation, visual effects, data validation, and many other basic website functions can be implemented through JavaScript. Of course, this is just a general summary, and there are many more specific capabilities. At present, JavaScript has created many application results in the field of computer technology, and the addition of elements such as jQuery and Ajax has further expanded the application scope of JavaScript.
Therefore, if you want to develop interactive web pages and applications, JavaScript is definitely an indispensable tool for you.
Take the first step
Then, if you have made up your mind to learn JavaScript, the most valuable wealth it can bring is an interesting learning process, valuable career prospects and future development plans. However, friends who are new to JavaScript often find that some of it is not easy to master. Choosing to learn knowledge through online video tutorials is of course the best choice. Although some online courses are indeed a bit expensive, many are completely free, that’s right! You hear it, there is such a good thing, you can master important programming knowledge without spending money. In today's article, we will learn about the top ten free tutorial resources. From here, you can learn JavaScript-related knowledge for free, conveniently and efficiently.
W3Schools is an excellent website that can help you learn JavaScript applications online for free. The tutorials cover various basic and advanced topics of JavaScript language in terms of design ideas. Each chapter in the tutorial allows learners to perform operations themselves and immediately see the results of their operations in JavaScript.
2)LEARN-JS
The Learn JS website provides a large number of online tutorials to facilitate learners who are just getting started to understand JavaScript from scratch. It can run JavaScript code directly in the web browser, so even if JavaScript is not installed, everyone can experience it directly. All in all, this website pays close attention to all aspects related to JavaScript programming, and it is worth your time to study it carefully.
Mozilla Developer Network (MDN for short) brings together a large number of JavaScript beginner’s guides and other learning resources. The online tutorial here contains three parts, namely beginner, intermediate and advanced. By the end of the course, you will definitely be able to understand a lot of the basic knowledge necessary to work in JavaScript programming.
About Tech website provides online learning solutions related to JavaScript, and is mainly aimed at beginners. This online series of tutorials can help you build expertise from scratch, thereby guiding you to gain the ability to write JavaScript programs on your own.
The CODEAVENGERS website can be said to be an ideal online environment for learning JavaScript. The courses they offer are both fun and in-depth. What makes it so special is that each tutorial chapter they design can guide learners to build games and applications that can actually run, and use this as the JavaScript learning outcome for each class. In this way, everyone can truly master very practical programming technology. Please believe me, CODEAVENGERS is definitely worth a try!
The Codeacademy website has rich interactive tutorials and goes straight to the heart of the JavaScript discipline. Its introductory course integrates JavaScript functions with other programming concepts very well, making it easy for everyone to understand and master.
This is a website definitely for beginners, and it is definitely worth experiencing seriously. The online video tutorials are divided into 21 episodes, which will guide learners step by step to gradually understand the basic knowledge of JavaScript, including obtaining tools, writing code, and more. In addition, the JavaScript course will break down each concept and provide video materials for each concept, so that learners can search for corresponding content in a targeted manner and focus on the relevant information they need to know. By the end of the course, you should have learned various JavaScript concepts and knowledge related to web games, enhanced user interfaces, and dynamic web pages.
8)Eduonix
Eduonix website can provide the most easy-to-understand online video tutorials to help learners who are starting from scratch easily enter the world of JavaScript. Since each online lecture is created by industry experts, the entire set of tutorials will comprehensively explore various JavaScript concepts in an easy-to-understand manner.
9)Alison
Here, you can find free dedicated online courses focusing on JavaScript and jQuery. This set of tutorials takes you through the major topics under JavaScript, including testing, functions, objects, arrays, loops, condition codes, executors, syntax basics, etc. In addition, it can also provide you with professional knowledge related to Ajax and jQuery.
Adobe Systems provides one of the highest-level online JavaScript learning courses currently, and is specially tailored to the actual needs of beginners. Therefore, if you are a web developer who wants to delve deeper into JavaScript, or a layman who wants to learn JavaScript programming from scratch, this tutorial has covered everything you need to know about JavaScript.
Summary
Now that you have all the above options, you can choose the most suitable tutorial plan based on your in-depth understanding. All in all, there are currently a large number of learning websites on the Internet that can help everyone easily master JavaScript-related professional knowledge. In other words, as long as we have a tenacious learning spirit and a lasting passion for knowledge, we will be able to cultivate ourselves into excellent developers. If you have opened several new pages mentioned above while reading this article, then congratulations - you have taken a solid first step on the road of learning. Comrades, now is the best time to start learning - don't hesitate, and make rapid progress on the road to self-enrichment!
The above is the entire content of this article, I hope you all like it.

去掉重复并排序的方法:1、使用“Array.from(new Set(arr))”或者“[…new Set(arr)]”语句,去掉数组中的重复元素,返回去重后的新数组;2、利用sort()对去重数组进行排序,语法“去重数组.sort()”。

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foreach不是es6的方法。foreach是es3中一个遍历数组的方法,可以调用数组的每个元素,并将元素传给回调函数进行处理,语法“array.forEach(function(当前元素,索引,数组){...})”;该方法不处理空数组。

本篇文章给大家带来了关于JavaScript的相关知识,其中主要介绍了关于BOM操作的相关问题,包括了window对象的常见事件、JavaScript执行机制等等相关内容,下面一起来看一下,希望对大家有帮助。


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