Delete duplicate array elements

Question

i have the following loops that goes through an array.

for(var j=0; j<10;j++) {
  for(var k=0; k<10; k++) {

    if(final[k]==ya[j]){
      final[k].change         


        

Answer 1

If you don't want to use any framework, thats the code:

function mix(first_arr, second_arr) {
    for(i = 0; i < second_arr.length; i++) {
        if(first_arr.indexOf(second_arr[i]) == -1) {
            first_arr.push(second_arr[i]);
        }
    }
    return first_arr;
}

See in action http://jsfiddle.net/jwAmA/

PD: Use arrays [] instead of objects {}

Answer 2

Your sample data isn't quite valid. Is this what you mean? http://jsfiddle.net/B74Gm/

var final = {
    1: {score:0},
    2: {score: 2},
    3: {score: 0},
    4: {score: 5},
    5: {score: 1},
    6: {score: 10}, 
    7: {score: 10}
},

ya = {
    2: {score: 2},
    10: {score: 3}, 
    4: {score: 0},
    15: {score: 0},
    6: {score: 4},
    17: {score: 5}
}; 

for (var i in ya) {
    final[i] = final[i] || {score: 0};
    final[i].score += ya[i].score;
}