javascript - JS insert into array at specific index

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I would like to
insert a string into an array at a specific index. How can I do
that?

I tried to use push()

Answer

Well, thats pretty easy. Assuming you have an
array with 5 objects inside and you want to insert a string at index 2 you can simply
use javascripts array splice
method:

var array =
            ['foo', 'bar', 1, 2, 3],
 insertAtIndex = 2,
 stringToBeInserted =
            'someString';

// insert string 'someString' into the array at index
            2
array.splice( insertAtIndex, 0, stringToBeInserted
            );

Your result will be
now:

['foo', 'bar',
            'someString', 1, 2,
            3]

FYI: The push()
method you used just adds new items to the end of an array (and returns the new
length)