addition of two array and get result

function addarray(a,b)
{

var c=new Array(a.length)
for(i=0;i<a.length;i++)
{c[i]=a[i]+b[i];
}
return c;
}

var a=[1,3,5];
var b=[3,5,6];
c=addarray(a,b)
console.log(c);