Let’s say the following is our array;
var theValuesIn3DArray = [75, [18, 89], [56, [97], [99]]];
Use the concept of flat() within the Math.max() to get the largest number.
Example
var theValuesIn3DArray = [75, [18, 89], [56, [97], [99]]]; Array.prototype.findTheLargestNumberIn3dArray = function (){ return Math.max(...this.flat(Infinity)); } console.log("The largest number in 3D array is="); console.log(theValuesIn3DArray.findTheLargestNumberIn3dArray());
To run the above program, you need to use the following command −
node fileName.js.
Here, my file name is demo202.js.
Output
This will produce the following output −
PS C:\Users\Amit\javascript-code> node demo202.js The largest number in 3D array is= 99