Find out how to merge two or more arrays using JavaScriptSuppose you have two arrays:const first = ['one', 'two'] const second = ['three', 'four']and you want to merge them into one single arrayHow can you do so?The modern way is to use the destructuring operator, to create a ...
Find out how to combine strings using JavaScriptJavaScript, like any good language, has the ability to join 2 (or more, of course) strings.How?We can use the + operator.If you have a string name and a string surname, you can assign those too the fullname variable like this:...
let elements = ["JavaScript", "HTML", "CSS"]; console.log(elements.join("")); This results in: JavaScriptHTMLCSS Which Approach to Use? It's advised to prefer the concat() function instead of the + operator, due to performance benefits. However, this doesn't actually always hold ...
There was a time whenXMLHttpRequestwas used to make API requests. It didn’t include Promises, and it didn’t make for clean JavaScript code. Using jQuery, you could use the cleaner syntax ofjQuery.ajax(). Now, JavaScript has its own built-in way to make API requests. This is the Fe...
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Functional components in Next.js are executed exactly like regular functions; they return some custom HTML used to render your component. This means any values in the function are initialised when you call the function, resetting them every time your component renders. You can use the useState ...
JavaScript powers the interactivity behind many web applications we use daily, such as Google Maps. Everything you see and interact with on maps is because of JavaScript. Let’s look at what JavaScript does behind the scenes to provide this interactive map interface. ...
The examples in the sections that follow use the HTTP services provided by httpbin.org. To follow along, navigate to httpbin.org page and open your browser’s JavaScript console. The example code uses relative URLs, which allow you to execute the requests directly from the page....
When and why to use the JavaScript map() function Note The JavaScriptmap()method is not the same as theJavaScriptMapobject, which stores an ordered sequence of key-value pairs. What is the JavaScript map() Function? The JavaScriptmap()function is a built-in method belonging to the Arrayobj...
How to concatenate several strings in JavaScript - To concatenate several string, use “Array.join()” method. Here, we will concat the following strings:John Amit SachinExampleYou can try to run the following code to concat several stringsLive Demo