map with filter in javascript code example
Example 1: use .map(), .filter() js
var arr = [1, 25, 20, 4];
var sum = arr.map((item) => item * 10).filter((item) => item > 100);
var sum2 = arr.map((item) => item * 10)
console.log("sum2", sum2)
// sum2 : (4) [10, 250, 200, 40]
console.log("sum", sum);
// sum : (2) [250, 200]
Example 2: map&filter
const files = [ 'foo.txt ', '.bar', ' ', 'baz.foo' ];
const filePaths = files
.map(file => file.trim())
.filter(Boolean)
.map(fileName => `~/cool_app/${fileName}`);
// filePaths = [ '~/cool_app/foo.txt', '~/cool_app/.bar', '~/cool_app/baz.foo']