Month: September 2021

This easy tutorial will show you how to use the JavaScript string trim() method and give some example usage. The trim()* method is available to any string type variable in JavaScript. It removes any white space (spaces, tabs, newlines) found at the beginning and the end of the string. Why is this useful? Sometimes you wind up with a bunch of un-needed white space padding your strings – often from the end-user hammering the space key when a space isn’t required. Unnecessary white space can also occur after splitting … Read more

This quick article will show you how to get the last item in an array in the JavaScript programming language. Arrays and Array Indexes in JavaScript Arrays are an ordered list of items. Each item in the array has a numerical index that defines its permission in the array. The first index is index 0 (indexes start counting at 0, not 1!), so the last index is the array’s length; subtract 1. Getting the Last Item in an Array So, to get the last item in an array, we just … Read more

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

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