Let’s try adding an array to the 2D array data created previously using the .push() method.
What is a 2D array?
A 2D array is a data structure that has a 1D array as an element of a 1D array. By using a 2D array, you can express data like a matrix or grid.
For example, to prepare a 3 row, 4 column 2D array, declare it as follows: constarray = [[‘A1’, ‘B1’, ‘C1’], [‘A2’, ‘B2’, ‘C2’], [‘A3’, ‘B3’, ‘C3’], [‘A4’, ‘B4’, ‘C4’]];
Replace it with a table and you get the following image.
This 2D array can have elements from array[0][0] to array[3][2].
.push() method
The .push() method is a JavaScript array method used to add elements to the end of an array. It takes one or more arguments, which are the elements to be added to the array.
The .push() method modifies the original array and also returns the new length of the array.
The following is an example of using the .push() method:
const array = [['A1', 'B1', 'C1'], ['A2', 'B2', 'C2'], ['A3', 'B3', 'C3'], ['A4', 'B4', 'C4']];
// Add data to the array
array.push(['A5','B5','C5']);
Logger.log(array[4]);
Information [A5, B5, C5]By adding an array to the array with push, the data in array[4] can now be obtained.
Summary
Please note that the .push() method modifies the original array. If you don’t want to modify the original array, you can use the .concat() method.
More to come.
