Question

How to increment a value in a map with Node.js

Answer 1

let mp = new Map();
   
mp.set("NodeJS", 23);
mp.set("Java", 89);
mp.set("C", 31);
mp.set("PHP", 93);

mp.set('NodeJS', mp.get('NodeJS') + 300 || 1);
mp.set('C', mp.get('C') + 700 || 1);

for (let entry of mp.entries()) {
    console.log(entry[0], entry[1]);    
}

   
   
        
        
/*
run:
        
NodeJS 323
Java 89
C 731
PHP 93
        
*/

 

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