const arr1 = [ 1, 2, 3 ];
const arr2 = [ 3, 5, 4, 2, 7, 0, 1, 10 ];

let hasAllElems = true;

for (let i = 0; i < arr1.length; i++){
    if (arr2.indexOf(arr1[i]) === -1) {
        hasAllElems = false;
        break;
    }
}

console.log(hasAllElems); // output: true