I am looking for a way to rearrange array1 based on array2.
var array1 = ["cat","dog","mouse","elephant","ant","cow","goat","hen"];
var array2 = ["mouse","cow","goat"];
Expected output:
var another_array = ["mouse","cow","goat", "bird"--- then rest of the values in array1]
Recently extracted from an object in the sequence of values or Infinity for the difference.
var array1 = ["cat", "dog", "mouse", "elephant", "ant", "cow", "goat", "hen"],
array2 = ["mouse", "cow", "goat"],
order = array2.reduce((r, k, i) => (r[k] = i + 1, r), {});
array1.sort((a, b) => (order[a] || Infinity) - (order[b] || Infinity));
console.log(array1);If you need to combine and refine data, consider using concatenation and filtering:
>>> newArray = array2.concat(array1.filter(item => !array2.includes(item)))
["mouse", "cow", "goat", "cat", "dog", "elephant", "ant", "hen"]
Here's an example that involves combining elements and applying a filter
const list1 = ["apple", "banana", "orange", "pear", "grape", "kiwi"];
const list2 = ["orange", "kiwi"];
const mergedList = [...list2, "melon", ...list1.filter(fruit => !list2.includes(fruit))]
console.log(mergedList)Implement the concatenation method
let fruits = ["apple", "orange"];
let vegetables = ["carrot", "spinach", "broccoli"];
let groceries = fruits.concat(vegetables);
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