To use Javascript promises in a for loop, use async/await. Here is a code skeleton for the correct approach: This waits for each promiseAction to complete before continuing to the next iteration in the loop. For comparison, here is the incorrect approach you were probably thinking of: In this guide, you learn how async/await works …
This quick guide teaches you how to loop through a table of URLs and put the URLs into an array of strings using JavaScript. Here’s a piece of code that loops through a table of URLs on an HTML table of a webpage’s sitemap. It turns the table of URLs into an array of strings …
How to Loop Through an HTML Table of URLs in JavaScript Read More »
To remove the first element of an array in JavaScript, use the built-in shift() function. For example, let’s return number 1 from this array of numbers: Result: Notice that shift() also returns the removed element. This is useful if you want to use it later. To use this returned element, store it into a variable …
How to Remove the First Element of an Array in JavaScript Read More »
To sort an array of arrays in JavaScript, pass a custom comparison function into the sort() function call. For example, let’s sort an array of arrays based on the second element in ascending order: Result: How Does It Work? To learn how this code works, you need to understand how basic sorting works in JavaScript. …
JavaScript How to Sort an Array of Arrays (Quick Guide + Deetails) Read More »
