technologyer.blogg.se - For each function js

For example, // with arrow function and callbackĬonst students = You can use the arrow function with the forEach() method to write a program. In the above program, the forEach() method takes myFunction() function that displays each element of a students array.Īs we have seen in the above example, the forEach() method is used to iterate over an array, it is quite simple to update the array elements. The forEach() method is used to iterate over an array.

index (optional) - the index of the current elementĪrr (optional) - the array of the current elements.

function(currentValue, index, arr) - a function to be run for each element of an array.

The syntax of the forEach() method is: array.forEach(function(currentValue, index, arr)) The forEach() method can also be used on Maps and Sets.

The forEach() method calls a function and iterates over the elements of an array.