One small note here is that you’ll need to cast the key to something that can be used to index your object.Īnd of course, the same thing can be accomplished using a for of loop: for (const of Object. Example Get your own TypeScript Server const names: string names.push('Dylan') // no error // names.push (3) // Error: Argument of type 'number' is not assignable to parameter of type 'string'. Read more about arrays in our JavaScript Array chapter. It’s a little more concise than the for loop, which you may prefer in a lot of situations.Īdditionally, since it accepts a function as a parameter, this means you can abstract out the iteration logic into a separate function, into something like: for (let i = 0 i < myArray.length i++) Ĭonsole.log(key, myObj) TypeScript has a specific syntax for typing arrays.
const myArray = įor (let i = 0 i console.log(i, value)) With a for loop, you can iterate through each element of an array and perform some operation on each element. The traditional for loop is one of the most commonly used looping constructs in programming, and it works just as well in Typescript.
In this article, we’ll explore some of the different approaches to looping through an array in Typescript, and highlight their unique features and benefits. If you’re using React, you might be interested in this article on for loops in React. Looping through an array is a common task in programming, and Typescript offers a variety of ways to accomplish this task.
0 kommentar(er)
