Sometimes, we want to get the browser screen’s width with JavaScript code. In this article, we’ll look at how to get a browser screen’s width with JavaScript code. Using Properties of document.body or document.documentElement The document.body is the JavaScript version of the HTML body element. The document.documentElement is the JavaScript version of the HTML html element. …

Sometimes, we want to loop through a JavaScript associative array object in our JavaScript code. In this article, we’ll look at how to loop through a JavaScript associative array object. Use the for-in Loop One way to loop through a JavaScript associative array object with the for-in loop. For instance, we can write: const…

A tutorial on how to remove a leading comma from a JavaScript string. — Sometimes, we want to remove a leading comma from a JavaScript string. In this article, we’ll look at how to remove a leading comma from a JavaScript string. Using the String.prototype.substring Method We can use the JavaScript string substring method to get the part of a string. Therefore, we can use it to return…

Sometimes, we want to do something when a user right-clicks on an element in our web app. In this article, we’ll look at how to handle right-clicks with JavaScript. Set the window.oncontextmenu Property to a Function We can set the window.contextmenu property to an event handler function to listen for right clicks on the page. To do…

Sometimes, we want to get the names of the properties in a JavaScript object. In this article, we’ll look at how to get a JavaScript object’s property names with JavaScript. Using the Object.keys Method We can use the Object.keys method to return an array of property name strings. For instance, we can write: const…

Sometimes, we want to disable an HTML button using JavaScript. In this article, we’ll look at how to disable an HTML button using JavaScript. Setting the disabled Property of a Button to true To disable an HTML button using JavaScript, we can select the button and then set the disabled property of it. For instance, if we have the…

Sometimes, we want to filter a JavaScript array from all elements of another JavaScript array. In this article, we’ll look at how to filter a JavaScript array from all elements of another array. Using the Array.prototype.filter Method We can use the JavaScript array filter method to filter out the array entries that are entries…

Sometimes, we want to run code repeatedly for x times with JavaScript without using a mutable variable. In this article, we’ll look at how to run code repeatedly for x times with JavaScript without using a mutable variable. Using the Array Constructor, Spread Operator, and Array.prototype.map We can create an array with length x with the Array constructor…

Sometimes, we have an iterator object in our JavaScript code that we want to convert into an array. In this article, we’ll look at how to transform a JavaScript iterator into a JavaScript array. Using the Array.from Method One way to transform JavaScript iterator into a JavaScript array is to use the Array.from …