Question

How to sum a property in an array of objects with JavaScript

Answer 1

const arr = [
  {id: 509, score: 85},
  {id: 982, score: 91},
  {id: 452, score: 93},
  {id: 344, score: 100},
];

const sum = arr.reduce((val, object) => val + object.score, 0);

console.log(sum); 
  
  
  
    
      
      
/*
run:
      
369
      
*/

 

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