set key to array javascript

<script>  
    // An array of keys 
    var keys = [5, 2, 3, 6, 10]; 
      
    // An array of values 
    var values = ["Geeks", "for", "Geeks", "Course", "Algorithm"]; 
      
    // Map created 
    var map = new Map(); 
      
    // Using loop to insert key 
    // value in map 
    for(var i = 0; i < keys.length; i++){ 
        map.set(keys[i], values[i]); 
    } 
      
    // Printing 
    for (var key of map.keys()) { 
        document.write(key + " => " + map.get(key) + "</br>") 
    } 
  
</script>