Compare All elements of One Array with Other Array | JavaScript Tutorial

Revive Coding

Aug 25, 2022

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Using Filter Compare Element of the array in JS

var result = result1.filter(function (o1) {
    return result2.some(function (o2) {
        return o1.id === o2.id; // return the ones with equal id
   });
});
// if you want to be more clever...
let result = result1.filter(o1 => result2.some(o2 => o1.id === o2.id));

Using Loop Compare Element of the array in JS

for (let i = 0; i < a.length; i++) {
    for (let k = i + 1; k < a.length; k++) {
        if (a[i] != a[k]) {
            //do stuff
        }
    }
}