how to skip elements in foreach loop

Question

I want to skip some records in a foreach loop.

For example, there are 68 records in the loop. How can I skip 20 records and start from record #21?

Answer 1

    array.forEach(function(element,index){
        if(index >= 21){
            //Do Something
        }
    });

Element would be the current value of index. Index increases with each turn through the loop. IE 0,1,2,3,4,5; array[index];