Answers for "count of object value"

5

js obj getting count of properties

let count = 0;
for (let k in myobj) if (myobj.hasOwnProperty(k)) count++;
Posted by: Guest on November-16-2019
0

Counting instances of values in an object

let names = ['Alice', 'Bob', 'Tiff', 'Bruce', 'Alice']

let countedNames = names.reduce(function (allNames, name) {
  if (name in allNames) {
    allNames[name]++
  }
  else {
    allNames[name] = 1
  }
  return allNames
}, {})
// countedNames is:
// { 'Alice': 2, 'Bob': 1, 'Tiff': 1, 'Bruce': 1 }
Posted by: Guest on May-21-2021

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