Combining arrays programmatically based on object properties

Need help combining two arrays:

var scores = [
  { user: "Alice", score: 22 }, 
  { user: "Sam", score: 30 }, 
  { user: "Linda", score: 14 }
]

var ranks = [
  { name: "Alice", rank: 1 }, 
  { name: "Sam", rank: 2 }, 
  { name: "Linda", rank: 3 }
]

Is there a way to merge these arrays into a single array like this:

var combined = [
  { name: "Alice", rank: 1, score: 22  }, 
  { name: "Sam", rank: 2, score: 30  }, 
  { name: "Linda", rank: 3, score: 14  }
]

Matching the scores with the corresponding names from the first array?

Answer №1

If you want to utilize the .map() method along with spread syntax, you can implement it in the following manner:

const scores = [
  { user: "Bob", score: 19 }, 
  { user: "Harry", score: 27 }, 
  { user: "Janelle", score: 35 }
];

const ranks = [
  { name: "Bob", rank: 3 }, 
  { name: "Harry", rank: 2 }, 
  { name: "Janelle", rank: 1 }
];

const result = scores.map(e => ({...e, rank: ranks.find(r => r.name === e.user).rank}));

console.log(result);

I trust that this explanation proves useful!

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