The filter() method creates a new array with array elements that passes a test.
This example creates a new array from elements with a value larger than 18:
Example
const numbers = [45, 4, 9, 16, 25];
const over18 = numbers.filter(myFunction);
function myFunction(value, index, array) {
return value > 18;
}
const over18 = numbers.filter(myFunction);
function myFunction(value, index, array) {
return value > 18;
}
Note that the function takes 3 arguments:
- The item value
- The item index
- The array itself
In the example above, the callback function does not use the index and array parameters, so they can be omitted:
Example
const numbers = [45, 4, 9, 16, 25];
const over18 = numbers.filter(myFunction);
function myFunction(value) {
return value > 18;
}
const over18 = numbers.filter(myFunction);
function myFunction(value) {
return value > 18;
}
Array.filter() is supported in all browsers except Internet Explorer 8 or earlier. Practice Excercise Practice now