Get the unique values from two arrays and put them in another array [duplicate]

Answer 1

var array1 = ['12','1','10','19','100'];
var array2 = ['12','10','19'];


var newArr,temp,temp1;


    temp=array1.filter(function(el) 
              {
                return arr2.indexOf(el) == -1; 

              });

    temp1=array2.filter(function(el) 
              {
                return arr1.indexOf(el) == -1; 

              });

  newArr=temp.concat(temp1);


  return newArr;

}