⤳ Sometimes you need to get the viewport width (or height) in JavaScript – probably to adjust an element based on the window size. The good news is, it’s easy and quick! Let’s see how. Wait! What is the viewport size? You may ask. Here’s an ...
⤳ In JavaScript, to check if an element exists or not, you need to access it first. You can use one the following methods to access DOM elements: Whenever you access a web page, the web browser parses the HTML code and populates a DOM tree ...
⤳ If you’re looking for the JavaScript isset equivalent, you’ve probably used it in PHP before and want the same functionality in JavaScript. As you probably know, PHP’s isset() function checks a variable is declared and not null. Although JavaScript doesn’t have an isset equivalent, there are ...
⤳ In this guide, you’ll learn how to do integer division in JavaScript. The division operator in JavaScript (/) divides two numbers (dividend and divisor) and returns the quotient as a floating point number (rather than the quotient and the remainder of a division separately). All numbers in ...
⤳ If you want to “replace space with dash” in PHP, you can do so with the str_replace() function. We usually replace spaces with dashes to generate a URL-friendly slug from a given string, but you might need them for other purposes. The str_replace() function accepts ...
⤳ There’s no built-in function in PHP to flatten a multidimensional array, but it’s not a difficult thing to do in PHP. In fact, it’s quite easy. We usually flatten arrays of data fetched from a database or an API. In real-world scenarios, we’d usually want ...
⤳ PHP double question marks (??) – officially known as Null coalescing operator – is a convenient alternative to ternary expressions in conjunction with isset(). You might have seen the following expression in your Laravel or PHP projects: But what do two question marks mean in PHP? ...
⤳ “Error: cannot find module” occurs when you try to load a non-existant module in Node – Either via ESM (ECMAScript Modules) or CommonJS module systems. The error usually looks like this in the console: Why does “Error: cannot find module” occur? The error “cannot find ...
⤳ The JavaScript error “TypeError: object.map is not a function” occurs when you call the map() method on a non-array object. A non-array object in JavaScript can be an object literal, a string, a Map or a Set object. Let’s see a simple example: The above code raises ...
⤳ How do you remove the last character from a string in PHP? Most web developers face it at one time or another; It can be a white space, a trailing slash in a HTTP URL, the last comma in a comma-separated list, or even a ...