Question

How to delete map elements in TypeScript

Answer 1

const mp = new Map([
  ['javascript', 1],
  ['nodejs', 2],
  ['typescript', 3],
  ['c++', 4],
  ['c', 5],
]);
 
mp.forEach((value, key) => {
  if (value > 3) {
      mp.delete(key);
  }
});
 
 
for (let [key, value] of mp) {
    console.log(key, value);            
}
 
    
    
    
    
/*
run:
    
"javascript", 1
"nodejs", 2
"typescript",  3 
    
*/

 

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Answer 2

const mp = new Map([
  ['javascript', 1],
  ['nodejs', 2],
  ['typescript', 3],
  ['c++', 4],
  ['c', 5],
]);
 
mp.delete('nodejs');
mp.delete('c++');
 
 
for (let [key, value] of mp) {
    console.log(key, value);            
}
 
    
    
    
    
/*
run:
    
"javascript",  1 
"typescript",  3 
"c",  5 
    
*/

 

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