This tutorial will demonstrate how to create a countdown timer in JavaScript, including a function you can copy and paste into your own code. The below code will break down creating a function which calculates the time until a certain future time, and how to… Read More »How to Create a Countdown Timer in JavaScript
This quick tutorial will show you how to find and replace text in JavaScript, with code examples. Replacing text in strings is something you will probably need to do quite often. JavaScript comes with the replace() method as part of it’s String objects to handle this functionality. JavaScript Strings… Read More »Find/Replace Text in JavaScript with replace() [Examples]
The startsWith() String method in JavaScript will determine whether a string starts with a certain string or character. Here’s how it is used, with code examples. startsWith() Method JavaScript Syntax The startsWith() method can be called from any String variable. string.startsWith(SEARCH, START) Note that: string can be any string value or variable SEARCH should… Read More »The startsWith() Method for JavaScript Strings [Examples]
This article will show you how to get the current date, time, or both, in the JavaScript programming language. Code examples included. Date Objects in JavaScript Date objects represent a single point in time in JavaScript. They are created by initializing a new variable with a… Read More »How to Get the Current Date and Time in JavaScript
Promises are a feature of JavaScript which allow code to continue executing in the background, and perform an action with the result when it has completed. This article will show you how to use Promises. What is a ‘Promise’ in JavaScript? A Promise is an object in… Read More »Promises in JavaScript: What they Are, How to Use Them
This tutorial will explain how to rename or move a file or directory in the Python programming language and provide some simple examples you can follow. Looking to delete a file? Check out our tutorial on file/folder deletion in Python here. To Avoid Errors when… Read More »How to Rename or Move a File/Folder/Directory in Python
This article will show you the various ways to delete files and directories in the Python programming language. To Avoid Errors, First Check if a File or Folder Exists To avoid errors when deleting a file, you can first check whether the file exists. You can… Read More »How to Delete a File/Folder/Directory in Python
This tutorial will show you how to format numbers to a fixed number of decimal places in the JavaScript programming language. JavaScript Number Variables JavaScript variables have different types. The type of a variable defines what kinds of values it can hold, and what can be… Read More »Formatting Numbers with the JavaScript toFixed()* Method [Examples]
This article will show you how to check if a value is in an array in the JavaScript programming language. Code examples to check whether an array includes a value are provided. Arrays in JavaScript Arrays are a type of variable that hold an ordered… Read More »Checking an Array Contains a Value in JavaScript [Examples]
This guide will explain the programming issues you will encounter when performing arithmetic with floating point numbers, and how to avoid them. The reason why these issues occur will be summarised and solutions will be provided. Floating point precision issues are common hurdle for beginner… Read More »Beginners Guide to Floating Point Arithmetic Precision
