A tutorial on how to get HTML elements with multiple classes with JavaScript. — Sometimes, we want to get multiple elements with multiple classes with JavaScript. In this article, we’ll look at how to get HTML elements with multiple classes with JavaScript. Get HTML Elements with Both Classes To get HTML elements with both classes, we can use the getElementsByClassName or querySelectorAll methods.

Oftentimes, we want to append new properties to a JavaScript object in our code. In this article, we’ll look at how to append a property to a JavaScript object. Use the Object.assign Method One way to append a property to a JavaScript object is to use the Object.assign method. For instance, we can write: …

A tutorial on how to build a tree array from a flattened array with JavaScript. — Sometimes, we want to build a tree array from a flattened array in JavaScript. In this article, we’ll look at how to build a tree array from a flattened array with JavaScript. Use JavaScript Array Methods and Recursion We can easily build a tree array from a flattened array with various array methods and recursion. For…

Sometimes, we want to strip all punctuation from a JavaScript string with a regex. In this article, we’ll look at how to strip all punctuation from a JavaScript string with regex. Use the String.prototype.replace Method We can use the JavaScript string replace method to get all the parts of a string matching a regex…

A guide on how to check if a background image is loaded on a page with JavaScript. — Sometimes, we want to check if a background image is loaded with JavaScript. In this article, we’ll look at how to check if a background image is loaded on a page with JavaScript. Listen to the load Event We can listen to the load event of a background image to see if it’s loaded. If…

A guide on how to get the keys of the items stored in local storage with JavaScript. — Sometimes, we want to get the keys to the items that we stored in our browser’s local storage in our web app. In this article, we’ll look at how to get the keys of the items stored in local storage with JavaScript. Use the Object.entries Method We can use the Object.entries method to get…

Sometimes, we want to use Lodash to find and return an object from a JavaScript array. In this article, we’ll look at how to use Lodash to find and return an object from a JavaScript array. Using the find Method We can use the find method to find an object with a predicate function…

Sometimes, we want to retrieve the text of the selected option element in a select element with JavaScript. In this article, we’ll look at how to retrieve the text of the selected option element in a select element with JavaScript. Use the selectedIndex Property We can get the index of the selected item with…

A tutorial on how to convert a UNIX timestamp to a calendar date with Moment.js. — Sometimes, we want to convert a UNIX timestamp to a calendar date with Moment.js. In this article, we’ll look at how to convert a UNIX timestamp to a calendar dare with Moment.js. Use the unix() and format() Methods We can use the unix() method to create a moment object from a timestamp. Then we can use…