for of vs for in Loop in JavaScript | ES6 | The Complete JavaScript Course | Ep.41

Note: For of loop is the part of ES6 but for in loop was already there in JavaScript.

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[adityasinghh]

Good morning bhaiya. Pichle din revise kr rha tha concepts js ke. Issiliye new topic cover nhi kr paaya. Waise aaj episode 41 complete kr liya bhaiya ji👍🏻🙏🏻

[vishalmishrausername]

For of Loop:
The for...of loop in JavaScript is used to iterate over the values of an iterable object, such as an array, a string, or a Set.
The for...of loop is more concise and readable than traditional for loops.
Example:
const fruits = ['apple', 'banana', 'cherry'];
for (const fruit of fruits) {
console.log(fruit);
}

For of Loop can't iterate over object, because a normal object is not iterable object. We can use Object.keys(), Object.values(), or Object.entries() to iterate over an object's properties.
Example:
// Using Object.keys()
const personkeys = Object.keys(person)
for (const key of personkeys ) {
console.log(key);
}

For in Loop:
The for...in loop in JavaScript is used to iterate over the property names (keys) of an object.
Example:
const person = { name: 'John', age: 30 };
for (const key in person) {
console.log(key);
}
// Output:
// name
// age

Key Points:
- The for...in loop iterates over the property names (keys) of an object, not the property values.
- We can access value by using person[key] format.
- The loop returns the property names (keys) as strings.
- The order of the property names (keys) is not guaranteed.

[AdarshSingh-hmss]

00:01 Comparison of for of loop and for in loop in JavaScript
02:14 The for of loop in JavaScript allows for looping through iterable objects in a more concise and readable manner.
04:36 Understanding variable values in loops
06:47 Using 'for of' loop in JavaScript creates a new variable in each iteration, allowing for local scoping.
08:53 Using for...of loop with constant variables in JavaScript
11:26 Strings and iterable objects can be used with for of loop in JavaScript.
14:17 Using for of and for in loops in JavaScript object iteration.
17:16 Use for of loop for iterating over values in JavaScript
20:22 Understanding for-of vs for-in loop in JavaScript
22:31 Importance of community support in problem-solving
Crafted by Merlin AI.

[HarjeetSingh-xq]

you are a gem bro
After watching you, I'm going to buy your courses which i need. I saw no one better than you so far. Keep doing good work

[Collecting_one_piece_fan]

Day 19: video 41 completed ....thank you sir making such great Video 😊....
26 video left for first project... excitement is on the peak 🎉🎉

[Pushpak_UE_devlover]

aub mujhe ye clear huaa thanks
I started this playlist This is day 5 I know basics of javascript so I will binge watch basic part and if I found any topic which I don't know then I will try that topic

[samith-ny]

I started this playlist This is day 4 I know basics of javascript so I will binge watch basic part and if I found any topic which I don't know then I will try that topic

[manvvar_hasan]

bahot achhe se samajh aagya hai sir😊 thank you so much

[mdfurquanalam]

12:20 - kya aapne map set padhaya hai Advance Javascript mein..?

[Manav_patel]

For Arrays and Strings We Use "For of" Loop and For Objects We Use "For in" Loop.

[raiLuka]

Thanku bhaiya..
Kb tk javascript ki playlist Puri hogi bhaiya😇

[Abhisheksoft]

for in array p bhi use kr skte hai object ki tarah

[Abhisheksoft]

Use dono ho jate hai sir ek function m nhi hota hai for in dyan kaise rahega ki kon sa key deta kon sa value y sb mix ho raha hai sir

[shyamlalbhardwaj]

Sir ji mera ek doubt h sir ji mai mern shikhu ya java full stack sir ji future kiska achha h

[mirazrio]

dada, can you give me js advance course link?

[shashishankar]

@anurag singh I am sorry to say that . Your video is not in step by step..! your concepts are preety good but its in unstructured way .

[Abhisheksoft]

Object pe for in hi use hota hai for of nhi hota bs yehi difference hai