Answers for "find same elements in two arrays javascript"

10

javascript do arrays intersect

let intersection = arrA.filter(x => arrB.includes(x));
Posted by: Guest on March-31-2020
1

javascript find matching elements in two arrays

const intersection = array1.filter(element => array2.includes(element));
Posted by: Guest on June-25-2020
1

javascript get same elments from multiple arrays

var result = arrays.shift().filter(function(v) {
    return arrays.every(function(a) {
        return a.indexOf(v) !== -1;
    });
});
Posted by: Guest on August-27-2020
0

javascript get intersection of two arrays

function getArraysIntersection(a1,a2){
    return  a1.filter(function(n) { return a2.indexOf(n) !== -1;});
}
var colors1 = ["red","blue","green"];
var colors2 = ["red","yellow","blue"];
var intersectingColors=getArraysIntersection(colors1, colors2); //["red", "blue"]
Posted by: Guest on August-01-2019
1

javascript find matching elements in two arrays

let firstArray = ["One", "Two", "Three", "Four", "Five"];
let secondArray = ["Three", "Four"];

let map = {};
firstArray.forEach(i => map[i] = false);
secondArray.forEach(i => map[i] === false && (map[i] = true));
let jsonArray = Object.keys(map).map(k => ({ name: k, matched: map[k] }));
Posted by: Guest on May-20-2020

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