Search Results for: javascript loop

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How to Use the PHP ‘do while’ Loop, With Examples

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PHP do while

This tutorial will teach you how to use the do while statement to build loops in the PHP programming language, and show some examples. The do while loop is one of the simplest types of loop in PHP. The code inside the loop will execute for as long as the do while condition is true. Change the condition, and the loop will exit. do while loops are a fundamental part of PHP (and loops are an essential part of computer programming in general) – so it’s good to get to know how they … Read more

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Home » Search results for 'javascript loop'

JavaScript Libraries We’re Using to Build Apps in 2022

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Javascript Libraries

JavaScript libraries take the legwork out of building complex applications. Here are some of the most useful libraries to use in 2021/2022. Once you’ve graduated from ‘Hello World!‘ and understand how JavaScript works, you’ll probably want to dive into building something more useful – a website, or a service, or a mobile app. These all have many moving parts – Authentication so users can log in, database support for storing data, file uploads so users can store their cat pictures in the database – all of these … Read more

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How to Filter Arrays in JavaScript, With Examples

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Javascript: filter arrays

We’ve covered arrays in JavaScript pretty extensively on LinuxScrew. This article will show you how to use the filter method – with easy-to-follow examples. JavaScript Arrays Arrays are a type of variable that holds a list of other values or variables. They’re one of the fundamentals of computer programming. These lists contain items at positions (called indexes). These items can be anything – numbers, strings, complex objects – whatever you want to store. Arrays are super useful. You might use them to store the rows in a … Read more

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How to Get the Length of an Array in JavaScript [Examples]

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JavaScript Array Length

This article will show you how to get the length of an array in JavaScript, as well as provide some code examples. JavaScript is one of the most popular programming languages. From humble origins as a webpage scripting language for animating menus and displaying pop-up ads, it is now a full-blown ecosystem that you can use to build cross-platform mobile apps, web pages, server processes, and even games. JavaScript Arrays Arrays are a vital building block for any program, even simple ones. An array is a … Read more

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How To Compare Arrays in JavaScript, With Examples

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Compare Arrays in JavaScript

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 Examples() Check Array Contains a Value in JavaScript, with Examples Removing an Element From an Array in JavaScript, with Examples What is an Array? An array is a type of JavaScript variable that can hold other variables, or references to … Read more

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JavaScript Callback Functions How-To, With Examples

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JavaScript Callbacks

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 executed from within the second function. What are Callbacks Useful For? Callback functions are usually used to execute a function when another has been completed. This allows for easy code- reuse. A single function that accepts a callback can be … Read more

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Bash For Loop [With Examples]

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Bash For Loop

The for loop is a handy tool when writing Bash scripts for repeating a task for a number of files, records, or other values. The for statement will iterate over a list of values, performing tasks on each one until all items have been processed. Usage cases include looping over the files in a directory, the lines in a text file, or the output of a database query. Bash For Loop Syntax for VARIABLE in LIST do COMMANDS done Where: VARIABLE is the variable name that will … Read more

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Python NumPy Crash Course – A Simple Tutorial and Example

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Python Numpy Course Tutorial Example

Python’s NumPy library is the standard for working with numerical data. This article will explain why that is, and how to use it. In addition to this, code examples for basic usage will be shown, and we will build a real-world example that implements NumPy to work with some example data. Python and Arrays Whether you are working with data collected for scientific or business reasons, it is usually collected in the form of arrays of data presented as tables with single or multiple columns. … Read more

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DIY Raspberry Pi Powered Pinball Machine [Kitchen Build]

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Raspberry Pi Powered Pinball

This article will show you how I built a DIY Raspberry Pi Powered Pinball game using GDevelop and an Arduino to add physical push-buttons to control the game. GDevelop is a zero-code game development studio, so this article has almost no coding required. I’ve been meaning to check out GDevelop for a while, so I’ve combined a simple GDevelop game with a 2-button Arduino game controller to make a little virtual pinball machine.  Here’s the finished product in action! What We’re Building As you can … Read more

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Using PHP sleep() and usleep() to Pause Execution [Examples]

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Pausing PHP with sleep and usleep

This short tutorial will show you how to use the PHP sleep() and usleep() functions to pause script execution for a number of seconds/microseconds, and provide some code examples. The PHP sleep() and usleep() functions both pause execution of the script, but both behave a bit differently. Why Pause/Sleep PHP Script Execution? Delaying, sleeping, or pausing PHP script execution is commonly used when scheduling an event. A call to the sleep() function might be placed at the end of a loop, so that after the code inside the loop has been run, a certain amount of time … Read more

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