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What will be the output of the following code?
let obj = { a: 1, b: 2, c: 3 };
for (let key in obj) {
console.log(key);
}
let obj = { a: 1, b: 2, c: 3 };
for (let key in obj) {
console.log(key);
}
- a)a b c
- b)1 2 3
- c)undefined undefined undefined
- d)The output cannot be determined
Correct answer is option 'A'. Can you explain this answer?
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Most Upvoted Answer
What will be the output of the following code?let obj = { a: 1, b: 2, ...
The for...in loop iterates over the keys of the object 'obj' and prints them.
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Community Answer
What will be the output of the following code?let obj = { a: 1, b: 2, ...
Explanation:
The code provided creates an object named "obj" with three properties: "a", "b", and "c", each assigned a numerical value. The code then uses a for...in loop to iterate over each key in the object and print it to the console.
Code Execution:
1. The object "obj" is created with the properties a, b, and c.
2. The for...in loop iterates over each key in the object.
3. In the first iteration, the key "a" is printed to the console.
4. In the second iteration, the key "b" is printed to the console.
5. In the third iteration, the key "c" is printed to the console.
6. The loop completes and the code execution ends.
Output:
The output of the code will be:
a
b
c
Explanation:
The for...in loop iterates over each key in the object in an arbitrary order. In this case, the keys "a", "b", and "c" are printed to the console in that order. The values of the properties are not printed, only the keys themselves.
The code provided creates an object named "obj" with three properties: "a", "b", and "c", each assigned a numerical value. The code then uses a for...in loop to iterate over each key in the object and print it to the console.
Code Execution:
1. The object "obj" is created with the properties a, b, and c.
2. The for...in loop iterates over each key in the object.
3. In the first iteration, the key "a" is printed to the console.
4. In the second iteration, the key "b" is printed to the console.
5. In the third iteration, the key "c" is printed to the console.
6. The loop completes and the code execution ends.
Output:
The output of the code will be:
a
b
c
Explanation:
The for...in loop iterates over each key in the object in an arbitrary order. In this case, the keys "a", "b", and "c" are printed to the console in that order. The values of the properties are not printed, only the keys themselves.
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