In my next blog post, I'll show you how to render an array in ReactJS. One of the most common times I need to loop over an object is when I'm rendering a list of items in ReactJS (like the tag HTML example above). If you're looking to use Array.map() on an object, and don't have time to read this post - here's how you can do it. Let is also used to declare variables(new way)Ĭonst is used to declare const values.Looping over arrays is fairly easy in JavaScript, but harder with objects, because you can't use array functions like `Array.map()`. Var is used to declare variables(old way of declaring variables) The map() method creates a new array with the results of calling a provided function on every element in this array.
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