Question

How to swap the keys and values in an object with JavaScript

Answer 1

function swapKeysValues(obj) {
 	 const swapped = Object.entries(obj).map(
    					([key, value]) => [value, key]
  					);

  	return Object.fromEntries(swapped);
}


let obj = {lang1: 'javascript', lang2: 'typescript', lang3: 'nodejs', lang4: 'c'}

obj = swapKeysValues(obj);

console.log(obj);

  
  
  
  
/*
run:
  
{
  c: "lang4",
  javascript: "lang1",
  nodejs: "lang3",
  typescript: "lang2"
}
  
*/

 

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