This article will show you how to compare arrays in JavaScript and provides some ready-to-use functions to do so. We’ve already covered a bit on how to use arrays in JavaScript: Looping over Array using JavaScript forEach(), With Examples Array slice() Method in JavaScript, with… Read More »How To Compare Arrays in JavaScript, With Examples
This article will explain what the JavaScript instanceof operator does and how it can be used. Examples provided. What does instanceof do? The instanceof operator returns TRUE or FALSE depending on whether a given value or variable is of a certain type or class – it checks whether a value is an instance of a given… Read More »JavaScript instanceof Operator – What it Does, How to Use It
JavaScript adds interactivity to web pages. This article shows you how to trigger JavaScript functions when an HTML element is clicked using onclick() events and attributes. Code examples included. JavaScript Events An event in JavaScript simply means that something has happened. The mouse has moved, or… Read More »JavaScript onclick() Events – Tutorial, With Examples
Here’s a clear article on what makes Java and JavaScript different – and some information to help you make the choice on which to learn and use for your projects in 2021. First up, it’s important to clarify that JavaScript and Java are not the same things! They just… Read More »JavaScript vs Java – What’s the Difference Which to Use in 2021?
isNaN() is a JavaScript function that will tell you whether a value is equal to NaN – or Not a Number. It can be used to determine whether the result of a mathematical operation is valid or not. Here’s how to use it. What is NaN? NaN is a special value… Read More »Using The isNaN() Function in JavaScript, With Examples
This article will explain callback functions in JavaScript – what they are, why they’re used, and how to use them. What is a Callback in the JavaScript Programming Language? A callback function is a function that is passed as a parameter to another function to be… Read More »JavaScript Callback Functions How-To, With Examples
This article will explain what JavaScript and jQuery are, how they differ, and how/why they should be used. What is JavaScript JavaScript began life in the mid-1990s as a scripting language for adding interactivity to web pages. Over time it has been developed into a… Read More »jQuery vs JavaScript – Differences? Which is Better?
Here’s a short guide to refreshing a webpage with JavaScript, with examples. There are over 500 ways to trigger a page reload using JavaScript. All but one are unofficial or are the side effect of another behavior. Here’s how to do it properly. Using location.reload() Simply… Read More »How to Refresh the Page in JavaScript using location.reload(), With Examples
Following on from our article on adding and subtracting time from dates in JavaScript – here’s how to compare two JavaScript date objects. This article will explore comparing dates/times with different granularity levels – from dates that are an exact month to dates that fall in the… Read More »Compare JavaScript Dates (Day/Minute/Hour/Before/After), With Examples
This article will show you how to use the parseInt() function in the JavaScript programming language. JavaScript is notoriously loosely typed – meaning that variables of one type (e.g., strings of text, numerical values, boolean values) are converted to others, allowing you to perform mathematical… Read More »Converting to Integer with JavaScript parseInt() [Examples]