Question

How to loop through an object with for loop in Node.js

Answer 1

const student = { 
    name: 'Arthur',
    age: 27,
    hobbies: ['movies', 'video game', 'coding']
};
  
for (let key in student) { 
    let value = student[key];
    console.log(key + " - " +  value); 
}
 
    
    
/*
run:
    
name - Arthur
age - 27
hobbies - movies,video game,coding
    
*/
 

 

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Answer 2

const student = { 
    name: 'Arthur',
    age: 27,
    hobbies: ['movies', 'video game', 'coding']
};
  
for (let [key, value] of Object.entries(student)) {
    console.log(key + " - " +  value);
}
 
    
    
/*
run:
    
name - Arthur
age - 27
hobbies - movies,video game,coding
    
*/
 

 

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Answer 3

const student = { 
    name: 'Arthur',
    age: 27,
    hobbies: ['movies', 'video game', 'coding']
};
  
for (let key in student) { 
    let value = student[key];
    console.log(value);
    console.log(key + " - " + value[0] + ", " + value[1] + ", " + value[2] + ", " + value[3]); 
    console.log("------------------");
}
 
    
    
/*
run:
    
Arthur
name - A, r, t, h
------------------
27
age - undefined, undefined, undefined, undefined
------------------
[ 'movies', 'video game', 'coding' ]
hobbies - movies, video game, coding, undefined
------------------
    
*/
 

 

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Answer 4

const student = { 
    name: 'Arthur',
    age: 27,
    hobbies: ['movies', 'video game', 'coding']
};
  
Object.keys(student).forEach(function(key) {
    console.log(key, student[key]);
});
 
    
    
/*
run:
    
name Arthur
age 27
hobbies [ 'movies', 'video game', 'coding' ]
    
*/
 

 

70+ SQL courses for beginners and professionals