Question

How to count all objects in array that match a condition with JavaScript

Answer 1

const arr = [{lang: 'javascript'}, {lang: 'typescript'}, {lang: 'nodejs'}, {lang: 'javascript'}];

const count = arr.filter(obj => {
    if (obj.lang == 'javascript') {
        return true;
    }
    return false;
}).length;

console.log(count); 
  
  
  
  
/*
run:
  
2
  
*/

 

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