Question

How to remove all undefined values from an object in JavaScript

Answer 1

const obj = {
  name: 'Ben',
  age: 40,
  a: undefined,
  work_in: 'JavaScript',
  b: undefined,
};
 
Object.keys(obj).forEach(key => {
  	if (obj[key] === undefined) {
    		delete obj[key];
  }
});
 
console.log(obj);
 
   
   
   
   
/*
run:
   
{
  age: 40,
  name: "Ben",
  work_in: "JavaScript"
}
   
*/

 

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