CODEWITHSUNDEEP
javascriptinternet-explorermultidimensional-array
TEK
TEK

Reputation: 1265

JavaScript 2D array unable to retrieve element in IE

I have the following JavaScript code that executes fine in Firefox, but in Internet Explorer 9 generates the error message:

SCRIPT5007: Unable to get value of the property '2': object is null or undefined 

var items = [
               [1,2,3],
               [4,5,6],
               [7,8,9],
               [5,5,5],
            ];
    var myString = "";
    for(var i = 0; i < items.length; i++) {
        myString += items[i][2];
    }
    alert("Joined number: " + myString);

Upvotes: 0

Views: 89

Answers (1)

user578895
user578895

Reputation:

IE adds a null element after a trailing commas. Remove the comma after [5,5,5],

To explain, items.length === 4 in FF, but 5 in IE. The 5th item is null, and null[2] does not exist.

Upvotes: 3

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