![]() The for loop is an iterative statement which you use to check for certain conditions and then repeatedly execute a block of code as long as those conditions are met. We're only going to look at JavaScript in this article, and we'll look at its syntax and some examples. In other words, loops let your code execute one or more statements as many times as desired.Īgain, there are many types of loops, but we will only look at the for loop in this article.Īlmost every high-level programming language, including JavaScript, has a for loop. Loops are computer programs that execute a set of instructions or a block of code a certain number of times without having to write it again until a certain condition is met. ![]() We'll also keep in mind that there are several types of loops, each of which performs a specific function even though they can almost all perform the same common function. In this article, we will learn what for loops are, how they work, and why we use them. This statement can only be used in contexts where await can be used, which includes inside an async function body and in a module. Or you can do something like the following: restartLoop:įor (var i=0, j=100000, x="test" i < 1000 i++, j-, x+= ".Loops are a programming concept that we constantly encounter and implement as JavaScript developers.Īnd many developers are familiar with loops, but not everyone understands how they work and why or when they should use a specific type of loop. The for await.of statement creates a loop iterating over async iterable objects as well as sync iterables. ![]() Easy if it's a simple i counter, but of course you may have more initialisation to do than just a simple counter. No - there is no keyword or other way to do it automatically.Īs you already mentioned you can just modify the loop condition variable(s) within your loop.
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