Question

How to delete map elements in JavaScript

Answer 1

const mp = new Map([
  ['javascript', 1],
  ['nodejs', 2],
  ['typescript', 3],
  ['c++', 4],
]);

mp.forEach((value, key) => {
  if (value > 2) {
      mp.delete(key);
  }
});


for (let [key, value] of mp) {
    console.log(key, value);            
}

   
   
   
   
/*
run:
   
"javascript", 1
"nodejs", 2
   
*/

  
  
 

 

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Answer 2

const mp = new Map([
  ['javascript', 1],
  ['nodejs', 2],
  ['typescript', 3],
  ['c++', 4],
]);

mp.delete('nodejs');
mp.delete('typescript');

for (let [key, value] of mp) {
    console.log(key, value);            
}

   
   
   
   
/*
run:
   
"javascript", 1
"c++", 4
   
*/

 

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