Question

How to Iterate over map in Node.js

Answer 1

let mp = new Map();
  
mp.set("Node.js", 23);
mp.set("Java", 89);
mp.set("C", 31);
mp.set("C++", 93);
mp.set("PHP", 77);
 
for (let entry of mp.entries()) {
    console.log(entry[0], entry[1]);    
}
  
  
       
       
/*
run:
       
Node.js 23
Java 89
C 31
C++ 93
PHP 77
       
*/
 

 

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Answer 2

let mp = new Map();
  
mp.set("Node.js", 23);
mp.set("Java", 89);
mp.set("C", 31);
mp.set("C++", 93);
mp.set("PHP", 77);
 
for (let [key, value] of mp) {
    console.log(key, value);            
}
  
  
       
       
/*
run:
       
Node.js 23
Java 89
C 31
C++ 93
PHP 77
       
*/

 

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Answer 3

let mp = new Map([["typescript", 7], ["javascript", 6], ["nodejs", 5], ["java", 2]])

mp.forEach((value, key) => {
    console.log(key, value);
});


 
 
 
   
/*
run:
        
typescript 7
javascript 6
nodejs 5
java 2

*/
 

 

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