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JavaScript Print – To the Console, WebPage, or a Printer [Examples]

JavaScript Print to Printer, Console, Page

You’ve searched for ‘JavaScript Print’ – so you’re probably trying to output data to the console, to the webpage or to a printer. Here’s how to do all three. Printing to the Console with console.log() The JavaScript console.log() method prints data to the JavaScript console (visible in your browsers web inspector). Any type of data can be logged to the console, including strings, numbers, arrays, and objects, and either the contents of, or a text representation of, the value will be displayed. console.log() is frequently used for debugging – developers use it to view … Read more

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

JavaScript do while loops

This article will show you how a JavaScript do while loop is constructed, and what it us used for, with code examples. do while loops are one of the simplest kinds of loops, and appear in most programming languages. A do while loop runs a block of code repeatedly, until a condition is met. When the do while condition is met, the loop stops. It’s important to get familiar with using loops – and understanding how loops work – as they form the backbone of just about every game and application you might … Read more

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How to Convert Array to String in JavaScript with toString() and join()

JavaScript Array to String

This brief tutorial will show you two ways to convert JavaScript arrays to strings using the toString() and join() methods. What Are Arrays? An array is a data structure which holds multiple values. It’s like a numbered list – each item in the array has a value and a position (called the index). The indexes start counting at position 0, so the first item in an array is at index 0, the second at index 1 and so on. Converting Arrays to Strings in JavaScript There are many reasons you may wish … Read more

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Array.shift() to Remove First Item from JavaScript Array [Examples]

JavaScript Array Shift

This short tutorial will show you how to use the JavaScript Array.shift() method to remove items from an array, and provide some code examples. JavaScript Arrays An array is a variable type which can hold zero or more values within it. Each value in an array has a position, called the index – which is an integer value representing the items position in it’s order of appearance. Indexes start counting at position 0 – so the first item in an array is at index 0, the second item at index 1, and so on. JavaScript … Read more

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How to Reverse a String in JavaScript in One Line of Code [Example]

Javascript Reverse String

This quick tutorial will show you how to reverse a string in JavaScript. Strings are Array-Like Strings in JavaScript are considered array-like. A string is an ordered series of characters, so it can be considered as an array of characters. This makes it easy to convert a string to an array. We can then use any one of the methods available for reversing the array to reverse the string. This means you can use any of the methods we’ve previously outlined on reversing arrays on strings. … Read more

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How to Sort Arrays in JavaScript with the sort() Method [Examples]

Javascript Sort Array

This tutorial will show you how to sort arrays in the JavaScript programming language with the array sort() method and provide some code examples. What is an Array in JavaScript? An array is a type of JavaScript variable that can hold a series of variables, references to variables, or values. It’s like a list of items. Each item or element in the array has a value and a position. The position is the order the element appears in the array and is called the index. Indexes are zero-indexed – meaning … Read more

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Exiting JavaScript Loops: ‘break’ & ‘continue’ [Examples]

Javascript Break Continue Statements

This article will explain the JavaScript break and continue statements and how they are used to exit and skip iterations in loops. JavaScript Loops In programming, a loop iterates through a series of values, performing an action on each value it encounters. Arrays can be looped through using the forEach method, and the for statement can be used to loop through a set of values generated by a JavaScript expression. You may encounter situations where you want to prematurely exit a loop, or skip processing certain values in the loop. This is what … Read more

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Searching JavaScript Arrays with the Array.find() Method [Examples]

Javascript Array find()

This tutorial will show you how to search arrays in JavaScript using the Array.find() method, and show some code examples. JavaScript Arrays An array is a type of variable that holds an ordered list of values (or references to other variables), called array elements. Each element has a position in the array, called the index – and can be accessed by using that index. We’ve got a whole pile of things you can do with JavaScript arrays. Accessing elements in the array by their index is convenient, … Read more

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JavaScript: Compare Strings (Optionally Ignoring Case), With Examples

JavaScript Compare Strings

This quick tutorial will show you how to compare two or more strings in the JavaScript programming language – optionally ignoring case – with code examples. What are Strings? Strings are a series of characters. Each character has an ordered position in the string. A string can be of any length – from 0 (zero) characters to as many as you need until your computer runs out of memory. Strings are a type of variable. String type variables in JavaScript are variables that can hold a string … Read more

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Why Using the Right Variable Type is Important (Especially in Javascript)

Programming Variable Types

Variable types are a fundamental programming concept that often confuses beginners – especially those learning JavaScript. This article will show you the consequences of using the wrong variable types. What is a Variable Type? In computer programming, the type of a variable determines what values a variable can hold and what can be done with the variable. As an example, numeric variables can have mathematical operations performed on them, whereas string variables cannot (more on this later). Different programming languages support different types of variables, … Read more