Some of the topics are given below but make sure that you explore as much as you can and build some projects as well for in-depth knowledge in JavaScript. So make sure that you first clear your basic concept about JavaScript and then you move to the advanced version of ECMAScript5 and ECMAScript6. JavaScript is one of the most confusing languages for developers and it ignores small errors that can create a problem in your project if you won’t notice it earlier. You should have a complete understanding of what is JSX before you start learning React. It is the easiest way to add HTML code inside JavaScript or you can say it is the extension of the JavaScript language syntax. In React you will work with JSX that looks like HTML and you can consider it like HTML-flavored JavaScript. You should know how to write semantic HTML tags, how to write CSS selectors, how to use classes, how to implement a CSS reset, box model, how to reset to border-box, flexbox, how to write responsive web applications including media queries, and how to build a frontend application using HTML and CSS. So before you start learning to react you should have a good command of writing HTML and CSS. HTML AND CSSĮvery front-end developer starts their journey with HTML and CSS. We are going to discuss some prerequisites and some basic concepts that you should know before you jump to the React. If you will directly go to the React you will face a lot of problems while learning this library and in interviews as well. The website running on ReactJS looks beautiful and most of the beginners in development get attracted to ReactJS (developed by Facebook) as well but a common mistake that a lot of developers and experienced people make is jumping directly into ReactJS (or some other library and framework) without knowing the prerequisites.
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