Question

How to change a value of an object in an array in JavaScript

Answer 1

const arr = [
  { id: 1, language: 'javascript' },
  { id: 2, language: 'node.js' },
  { id: 3, language: 'typescript' },
  { id: 4, language: 'php' },
];
 
const index = arr.findIndex(object => {
  	return object.id === 4;
}); 

if (index !== -1) {
  	arr[index].language = 'c++';
}
 
console.log(arr);
   
   
   
   
/*
run:
   
[{
  id: 1,
  language: "javascript"
}, {
  id: 2,
  language: "node.js"
}, {
  id: 3,
  language: "typescript"
}, {
  id: 4,
  language: "c++"
}]
   
*/

 

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