Nowadays JavaScript has three different keywords to declare a variable — var, let and, const. Each has its own properties and particularities. Let’s start by making a simple comparison table ...

JavaScript variables hold a wide variety of information and can be used with virtually any data type. Here's how to use variables to store numbers, text strings, objects, and more.

Hello,<BR><BR>I'm using some JavaScript and a cookie to gather general user information and then pass it to another page which in turn uses JavaScript to write the variable data into a form text ...

After adding "y" to "x," JavaScript stores "11.234" in the "z" variable. You can control the number of decimal points that appear in a result by using the "toFixed" function. Instead of adding "x ...

Survey your options for in-browser data storage with JavaScript, including built-in variables, localStorage, IndexedDB, and the service worker cache API.

Before you say it, yes I know about cookies. The problem I have is I need to keep a LOT of numbers between refreshes, and was wondering if there is some way to mark an array variable as unrefreshable.

JavaScript vs. TypeScript example. TypeScript's type system has a minor impact on how variables are referenced and declared, yet it has a huge impact on maintainability and consistency. For example, ...