CODEWITHSUNDEEP
javascriptarrays
user1541722
user1541722

Reputation: 39

Javascript, Getting Length of String Held in Array

k = [['a'], ['ab'], ['abc']];
alert(k[2].length);

The above code fragment returns 1.

How can I get the length of the string, 3 in this case?

Upvotes: 1

Views: 13949

Answers (2)

Jonathan
Jonathan

Reputation: 6732

In your example, k is not a normal array containing strings. It contains sub-arrays, which contain the strings. You should declare k this way:

k = ['a', 'ab', 'abc'];

If you do want to use your own declaration, you could do this:

alert(k[2][0].length);​

Upvotes: 2

user166390
user166390

Reputation:

The object is not what is expected. Consider:

k = [['a'], ['ab'], ['abc']];
a = k[2]    // -> ['abc']
a.length    // -> 1 (length of array)
b = k[2][0] // -> 'abc'
b.length    // -> 3 (length of string)

Upvotes: 9

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