If you want an equal interval, your loop is fine, you just need to fix the math for calculating the timeout: for (let index = 10; index > 0; index--) { setTimeout(() => { console.log(index) }, 1000*(10-index)); . <button id="btn">click</button>

Aug 25, 2020 · We use Object.keys to get the array indices (using filter if you store non-element properties in your arrays), reverse that, and then loop through the result: const a = ["one", "two", "three"]; Object.keys(a).reverse().forEach(function(index) { console.log(a[index]); }); console.log("Proof that a is not, itself, reversed: " + JSON.stringify(a));

Jul 1, 2014 · var num = 10, reverse = false; for (var r=reverse, i=r?num-1:0, n=r?-1:num, d=r?-1:1; i!=n; i+=d) { console.log(i); } This has the advantage of having a single control structure, a single test in each loop, and a single iterator addition.

Sep 11, 2024 · When working with arrays in JavaScript, sometimes you may need to loop through them in reverse. Using a reverse for loop can be an efficient way to achieve this. This tutorial will explore the JavaScript reverse for loop , offering practical …

Mar 8, 2025 · In this article, we explored the basics of writing for loops in reverse order using JavaScript. By mastering the syntax and examples of backwards for loops, you can improve your coding skills and tackle a wide range of programming challenges.

Sep 15, 2023 · This comprehensive guide aims to provide a clear understanding of utilizing ‘for loops’ in JavaScript, but with a twist—we will focus on how to run them in reverse. If you’re eager to explore this less commonly used but incredibly useful technique, then this article is …

Apr 19, 2024 · There are several methods to loop through the array in JavaScript in the reverse direction: 1. Using reverse for-loop. The standard approach is to loop backward using a for-loop starting from the end of the array towards the beginning of the array. 2. Using Array.prototype.reverse() function.

JavaScript reverse for loop to display the multiplication table in reverse order: for(var i=10; i>=1; i--) { document.write(2," x ",i," = ",2*i,"<br/>"); }

Jun 23, 2018 · You could try to use this code: function reverseString(str) { var newString = ""; for (var i = str.length - 1; i >= 0; i--) { newString += str[i]; } return newString; } Share

Jan 20, 2025 · JavaScript provides a built-in array method called reverse () that reverses the elements of the array in place. This method mutates the original array and returns the reversed array. The reverse () method directly modifies the original array by reversing its elements. 2. Using For Loop.