Question

How to find 2D array (matrix) dimensions (rows, cols) in JavaScript

Answer 1

const matrix = [
  		[11, 32, 13, 81],
  		[20, 80, 50, 990]
];
  
console.log("rows: " + matrix.length);
console.log("cols: " + matrix[0].length);
 
 
 
 
/*
run:
  
"rows: 2"
"cols: 4"
   
*/

 

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