Question

How to Iterate over map in TypeScript

Answer 1

let mp = new Map();

mp.set("TypeScript", 23);
mp.set("Java", 89);
mp.set("C", 31);
mp.set("C++", 93);

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


     
     
/*
run:
     
"TypeScript",  23 
"Java",  89 
"C",  31 
"C++",  93 
     
*/

 

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Answer 2

let mp = new Map();

mp.set("TypeScript", 23);
mp.set("Java", 89);
mp.set("C", 31);
mp.set("C++", 93);

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


     
     
/*
run:
     
"TypeScript",  23 
"Java",  89 
"C",  31 
"C++",  93 
     
*/

 

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Answer 3

let mp = new Map<string, number>([["typescript", 9], ["javascript", 8], ["nodejs", 5], ["c", 2]])

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




   
/*
run:
        
"typescript",  9 
"javascript",  8 
"nodejs",  5 
"c",  2 
           
*/
 
   

 

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