Update javascript array

Question

I just started a couple of weeks ago with javascript. How can I add or editing elements to this array:

var array = [["A1","B1","C1"],
             ["A2","B2","C2"],
             ["A3","B3","C3"],
             ["A4","B4","C4"],
             ["A5","B5","C5"],
             ["A1","B1","C1"],
             ["A2","B2","C2"],
             ["A3","B3","C3"],
             ["A4","B4","C4"],
           ];

For example, I want to add ["C1", "C2", "C3"] or update the second line to ["Z1" , "Z2", "Z3"]

For adding elements to array refer: [PUSH](https://www.w3schools.com/jsref/jsref_push.asp) or To add element to a specific posotion in array refer: [THIS](https://stackoverflow.com/a/586189/2968762) — Abhi, Sep 18 '17 at 11:28
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array — Ivan Sivak, Sep 18 '17 at 11:29

score 2 · Accepted Answer · answered Sep 18 '17 at 11:31

If you want to access the topmost array, you can push or popor a number of other native array methods. You can access the inner arrays by index (array[0] for example), and then use regular array methods on the inner arrays. You can read more about arrays and their methods here

To answer your two examples, to add a new array, you'd array.push(newArray) where newArray is the array you wanted to insert, ["C1", "C2", "C3"], if you wanted to update the second line, you could access it by index array[1] and set it equal to a new value, array[1] = ["Z1" , "Z2", "Z3"]

How can I figure it out what the index of the array is when I just know a unique value ist for example Z1? — , Sep 18 '17 at 11:58

score -1 · Answer 2 · edited Sep 01 '18 at 16:36

-1

array.push(["C1", "C2", "C3"] );

array[1] = ["Z1" , "Z2", "Z3"];

edited Sep 01 '18 at 16:36

Mohammad Usman

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answered Sep 18 '17 at 11:30

romph

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Update javascript array

2 Answers2