For example, if I have 2 arrays being
['dog', 'cat', 'zebra', 'lion', 'cat']
and
['dog', 'cat', 'cat', 'frog']
then a new array should be created that only contains
['dog', 'cat', 'cat']
You can use two loop for the same and compare them from each other. Ex.
for(let i=0; i<ar1.length; i++)
{
for(let j=0; j<ar2.length; j++){
if(ar1[i]==ar[2])
res.push(ar[i]);
var array1 = ['dog', 'cat', 'zebra', 'lion', 'cat'];
var array2 = ['dog', 'cat', 'cat', 'frog'];
// Then you can use filter
// const filteredArray = array1.filter(value => array2.includes(value));
// (OR) `indexOf` for old browsers compability
var filteredArray = array1.filter(function(n) {
return array2.indexOf(n) !== -1;
});
console.log(filteredArray);const a = ['dog', 'cat', 'zebra', 'lion', 'cat'];
const b = ['dog', 'cat', 'cat', 'frog'];
let result = a.filter(function(obj){
return b.indexOf(obj) !== -1
})
console.log(result)