what is map js code example

Example 1: javascript map

array.map((item) => {
  return item * 2
} // an example that will map through a a list of items and return a new array with the item multiplied by 2

Example 2: javascript map

function listFruits() {
  let fruits = ["apple", "cherry", "pear"]
  
  fruits.map((fruit, index) => {
    console.log(index, fruit)
  })
}

listFruits()

// https://jsfiddle.net/tmoreland/16qfpkgb/3/

Example 3: map javascript

function each(collection, action) {
  if (Array.isArray(collection)) {
    for (var i = 0; i < collection.length; i++) {
      action(collection[i], i, collection);
    }
  } else {
    for (var key in collection) {
      action(collection[key], key, collection);
    }
  }
}

Example 4: map in javascript

['elem', 'another', 'name'].map((value, index, originalArray) => { 
  console.log(.....)
});