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In some interesting discussions on Twitter, I found that there is a common doubt about the dependence of Web applications and sites on javascript. this kind of doubt has always existed, and for me, this problem has exploded with the rapid development of browser technology. The first time I encountered this problem was in the era where DHTML was prevalent. we have nothing to do with browsers. We have added various animated menus and 3D labels (we have

25 JavaScript interview questions that you need to know, javascript questions 1. Use typeof bar === "object" to determine if bar is an object with potential drawbacks? How can we avoid such disadvantages? The disadvantage of using typeof is obvious (this disadvantage is the same as using instanceof ): let obj = {};let arr = [];console.log(typeof obj === 'object'); //trueconsole.log(typeof arr === 'object');

Article Introduction: JavaScript parsing: Let search engines see more authentic pages. For a long time, webmasters choose to use JavaScript to achieve the dynamic behavior of the Web page, the reason for this is varied, such as speed up the page response speed, reduce site traffic, hidden links or embedded ads. Because the early search engine does not have the corresponding processing ability, ca

This article explains the this keyword in JavaScript using the image explanation. What does JavaScriptthis point? You can get the desired answer from this article. For more information, see JavaScript as a scripting language. It supports functional programming, closures, prototype-based inheritance, and other advanced functions. JavaScript seems to be easy to get

In-depth analysis of the creation of objects in Javascript this small series is the most popular in my blogArticleSome bloggers urged me to finish my next article. Yesterday and today I found that an article could not finish my next half, so I divided the next article I was going to write into two parts. In the previous article of this topic, I talked about three ways to create objects. Finally, I understood how to create

When Xi first came into contact with JavaScript, My friend asked: what have you done recently? I replied: I learned the Java scripting language. For this reason, I have been sweating ...... @ As a matter of fact, JavaScript and Java are not built at all. Later I saw a book and realized that JavaScript is prefixed with "Java-", which is completely a marketing st

In-depth understanding of the scope and context of Javascript, and deep understanding of javascript Overview The implementation of scopes and context in Javascript is unique to the Javascript language. To some extent, Javascript is very flexible. Functions in

This article mainly introduces 45 JavaScript programming notes and tips. in this article, I will share some JavaScript skills, tips, and best practices, except for a few, both the browser's JavaScript engine and the server-side JavaScript interpreter are applicable. if you need Jav