Convert grouped data in Javascript into a JSON array

After implementing the code snippet provided below, I successfully managed to group objects from my existing dataset using Underscore JS. The grouped data is displayed in distinct groups as depicted by the output:

{Group1: Array[10], Group2: Array[13], Group3: Array[16], Group4: Array[21], Group5: Array[38]}


//To create categories based on assigned groups
var groupedData = _.groupBy(results, function (d) { 

return d.groups;

});

console.log(groupedData);

However, my primary aim now is to transform this structure into a JSON array similar to the following format:

var myData = [["Group1", 10], ["Group2",13], ["Group3",16], ["Group4",21], ["Group5",38]];

I am seeking advice on how I can modify my code to achieve this desired outcome.

Your assistance would be greatly appreciated. Thank you.

Answer №1

Utilize Array.map and Object.keys

let data = {
  x: [4, 5],
  y: [7, 2]
};
let groupData = Object.keys(data).map(function(key) {
  return [key, data[key].length];
});

document.body.innerHTML = JSON.stringify(groupData);

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