Javascript: Unshift to second position of the array [duplicate]

Question

I understand this diagram:

But now my question is... How can I add an element just in the second position of the Array?

If I have this array: (A, C, G, T) and I want to add B...

The result that I want should be: (A, B, C, G, T)

Any suggestions?

Thank you!

vittore · Accepted Answer · 2015-11-26 21:10:09Z

18

What you want is the splice function:

arr.splice(index, 0, item); will insert item into arr at the specified index.

vittore

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answered Nov 26, 2015 at 21:08

CoderPi

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2 Comments

excelent! this is what I was searching for. Thank you!

arr.splice(1, 0, 'B');