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

Posted by Ben Mohammad
Ben Mohammad
5,659 Points

Just isn't printing to the screen...........Help?

var playList = [ 'I Did It My Way', 'Respect', 'Imagine', 'Born to Run', 'Louie Louie', 'Maybellene' ];

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

function printList(list){ var listHTML = <ol>; for (var i = 0; i < list.length; i+=1)[ listHTML += '<li>' + list[i] + '</li>'; ] listHTML+='</ol>'; print(listHTML); } printList(playList);

1 Answer

Benjamin Barslev Nielsen
Benjamin Barslev Nielsen
18,958 Points
Benjamin Barslev Nielsen
Benjamin Barslev Nielsen
18,958 Points

There is a problem in the printList function:

function printList(list){ 
    var listHTML = <ol>; 
    for (var i = 0; i < list.length; i+=1)[ 
        listHTML += '<li>' + list[i] + '</li>'; 
    ] 
    listHTML+='</ol>'; 
    print(listHTML); 
}

In the first line inside the function you assign <ol> to listHTML, but forget to make <ol> a string, i.e, the line should have been:

var listHTML = '<ol>';

Besides this you use [] instead of {} to indicate the scope of the for-loop, so the for-loop should have been:

for (var i = 0; i < list.length; i+=1) {
    listHTML += '<li>' + list[i] + '</li>'; 
}

Otherwise the code seems fine.