js array filter function code example

Example 1: filter javascript array

var words = ['spray', 'limit', 'elite', 'exuberant', 'destruction', 'present'];

const result = words.filter(word => word.length > 6);

console.log(result);

Example 2: filter javascript

const arr = [1, 2, 3, 4, 5, 6, 7, 8, 9];

const filter = arr.filter((number) => number > 5);
console.log(filter); // [6, 7, 8, 9]

or 

const words = ['spray', 'limit', 'elite', 'exuberant', 'destruction', 'present'];

const result = words.filter(word => word.length > 6);

console.log(result);
// expected output: Array ["exuberant", "destruction", "present"]

Example 3: javascript array filter

var newArray = array.filter(function(item) {
  return condition;
});

Example 4: js filter items by index

let newArray = arr.filter(callback(element[, index, [array]])[, thisArg])

Example 5: filter javascript

function filter(array, filterfunc) {

  let filteredArray = [];
  for (let i = 0; i < array.length; i++) {
    let result = filterfunc(array[i], i, array);
    if (result) {
      filteredArray.push(array[i]);
    }
  }
  return filteredArray;
};