![]() Moving from a traditional for.in loop, the ForEach method can be introduced to bring a more functional approach and style to your programming. You’ve now learned how to use Array ForEach to loop over your array elements and render some data.įorEach is a great place to get started with JavaScript loops. Using ForEach or the newer for.of is preferred for simple looping. ![]() We can also loop backwards and have the flexibility to break with the for.in loop. Here, I’m simply using it to render, there is no further action taking place and I get no return value from the method call. map().filter() which we’ll learn about shortly.įorEach is a nice and clean API and should be thought about as a one-way street. Whilst technically the ForEach method on JavaScript arrays is more “functional” style, it does not return anything - therefore cannot be chained as part of a series of operators that transform data, for example. $īoth achieve the identical output, it’s merely how we compose the code. querySelector ( ' #app ' ) for ( let i = 0 i
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