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JavaScript JavaScript Loops, Arrays and Objects Tracking Multiple Items with Arrays Using For Loops with Arrays

Posted by Nijad Kifayeh
Nijad Kifayeh
6,092 Points

Code correction

Just wanted to correct some of the code shown in the video. Specifically, Dave initially creates the variable (array) playList, but incorrectly refers to it in the functions as list; the correct code therefore is:

var playList = [
    'A',
    'B',
    'C' ] ;

function print( message ) {
    document.write( message ) ; }

function printList( list ) {
    var listHTML = '<ol>' ;
    for( var i = 0 ; i < playList.length ; i++ ) {
        listHTML += '<li>' + playList[i] + '</li>' ; }
    listHTML += '</ol>' ;
    print( listHTML ) ;
}

printList( playList) ;

1 Answer

Chris Shaw
Chris Shaw
26,676 Points
Chris Shaw
Chris Shaw
26,676 Points

Hi Nijad,

What Dave McFarland has taught you in the video is correct as playList has been passed to printList as a parameter which means a locally scoped copy of the playList variable is now usable within printList thus the code should be referencing list instead.

function printList(list) {
    var listHTML = '<ol>';
    for (var i = 0; i < list.length; i++) {
        listHTML += '<li>' + list[i] + '</li>';
    }
    listHTML += '</ol>';
    print(listHTML);
}

Happy coding!

Nijad Kifayeh
Nijad Kifayeh
6,092 Points

Thanks for clearing that up Chris!!!