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javascript exercises beginners
Convert an object to array in JS
Friday, January 22, 2021
Converting an object to an array is pretty easy in JavaScript. All we have to do is use Object.keys, or an even easier method to use, Object.entries.
javascript exercises beginners
Get an object's length in JavaScript
Thursday, January 21, 2021
To get the length of an object in JS, we use Object.keys() to get an array of our object's own properties' keys. Then we can easily return the length value.
javascript exercises beginners
Build a multi-dimensional array in JavaScript
Monday, January 18, 2021
How to build matrices in JS? Also known as multi-dimensional arrays, these are just arrays of arrays in JS. An easy way to build multi-dimensional arrays is to output them using nested loops, as we'll show in this tutorial.
javascript exercises beginners
Convert kebab case to camel case in JavaScript
Monday, January 18, 2021
It's the combination of String.prototype.match(), RegExp, and String.prototype.replace() that gives us the solution to coverting a kebab case string to camel case string in JS.
javascript exercises beginners
Capitalize the first letter of a string in JavaScript
Monday, January 18, 2021
The trick is to separate the string into the first letter and the rest of the string using charAt() and slice(), then run the toUpperCase() method on the first substring, and concatenate the rest of the original string back to the uppercased first letter.
javascript exercises beginners
Insert CSS styles with JavaScript
Sunday, January 17, 2021
Appending a style tag to the head tag of an HTML document requires some simple DOM manipulation. In this tutorial, we'll discuss how to do this, and all the other ways of adding styles using JS.
javascript exercises beginners
Compute the factorial of a number with JavaScript
Sunday, January 17, 2021
Calculating a factorial is very easy, but many JS implementations online make this problem unnecessarily complex. In this tutorial, we'll see the basics of how to calculate a factorial in JavaScript. We'll also go through the explanation of building a factorial calculating function in JS step-by-step.
javascript exercises beginners
Calculate the Fibonacci sequence in JS
Saturday, January 16, 2021
Fibonacci sequence in JS should not be hard to build. In this article, we show step-by-step, how to build in a few simple steps, a rudimentary fibonacci sequence. Once we know the basic mehanism that lies behind the logic of fibonacci sequence code, we can then build more complex code based on this foundation.
javascript exercises beginners
Count the number of times a substring appears in a string in JavaScript
Friday, January 15, 2021
Have you ever tried to see how many times a letter or a word appears in a string? Or how many times a value is repeated in an array? This tutorial shows you how to figure that out in JS.
javascript exercises beginners
Convert an array of numbers to an array of ordinal numbers in JS
Thursday, January 14, 2021
To format an array of numbers as ordinal numbers, we need to properly add the suffixes -st, -nd, -rd, and -th to correct numbers. This includes numbers 11, 12, and 13, which are a bit of an edge case. In this article, we discuss how this works.
