![]() ![]() Now let’s declare another array with different data types. ![]() Let arrayDefinition = // Array declaration in JS You can see below how to declare an array in JavaScript: Then we use some JS methods like slice () & splice (). Sometimes we need to do operations on those arrays. But the difference is that JS arrays can contain different type of data at once. Like in other programming languages, we use arrays to store multiple data in JS. If you prefer, you can also watch the video version below:įirstly, you need to understand how JavaScript arrays work. You can find a summary of each method in the end. I advise students and junior developers to read this article carefully because these three methods can also be asked in JOB INTERVIEWS. Perhaps because their naming is so similar they are often confused, even among experienced developers. I would like to explain three of them in this article: the slice(), splice() and split()methods. JavaScript is used to create interactive websites.JavaScript built-in methods help us a lot while programming, once we understand them correctly. From then, JavaScript came into existence. But, due to trademark reasons and certain other reasons, in December 1995, the language was finally renamed to 'JavaScript'. Later, the marketing team replaced the name with ' LiveScript'. Finally, in May 1995, Marc Andreessen coined the first code of Javascript named ' Mocha'. Further, Netscape decided to give a similar name to the scripting language as Java's. Now, two languages were there: Java and the scripting language. But, before Brendan could start, the company merged with Sun Microsystems for adding Java into its Navigator so that it could compete with Microsoft over the web technologies and platforms. Consequently, in 1995, the company recruited Brendan Eich intending to implement and embed Scheme programming language to the browser. Thus, a 'glue language' was believed to be provided to HTML to make web designing easy for designers and part-time programmers. He realized that the web needed to become more dynamic. In the year 1994, Netscape was founded by Marc Andreessen. In 1993, Mosaic, the first popular web browser, came into existence.
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