filtering 2d arrays using javascript

Question

I have a 2D array where I need to filter the rows having date field (3d column)

var data = [
[\'1\',\'a\',\'12-12-2019\',\'A\'],
[\'2\',\'b\',\'\',\'A\'],
[\'3\'         


        

Answer 1

I wouldn't worry about using a loop to do that - this is what loops are for.

You could just use Array.prototype.filter() to make sure that there's a value in the 2nd position of each array, returning whether it's truthy or not.

var data = [
  ['1','a','12-12-2019','A'],
  ['2','b','','A'],
  ['3','c','12-1-2019','A'],
  ['4','d','','A'],
];

// Used a classic `function` keyword because you're using this in a Google apps script
const result = data.filter(function(item) {
  return item[2];
});

console.log(result);