Hello Guys Today i will discuss which loop among "for","while" and "do-while" is faster?
I am comparing only these 3 loops in this post.

Let's get started...

I am going to perform this test at 10 billion value for the loops

For loop -

let count = 0;
let start = new Date().getTime();
for(let i = 0; i<10000000000;i++){
  count += i
}
let end = new Date().getTime();

console.log((end - start)/1000)

OUTPUT -

I performed it 10 times and got the result in seconds

22.01
14.56
14.49
14.93
15.03
15.10
15.30
15.11
16.34
15.92

While loop -

let count = 0;
let start = new Date().getTime();
let i = 0;
while (i < 10000000000){
    count += i;
    i++;
}
let end = new Date().getTime();

console.log((end - start)/1000)

OUTPUT -

I performed it 10 times and got the result in seconds

21.20
14.69
14.42
15.64
16.93
15.79
16.40
16.09
19.05
18.27

do-while loop -

let count = 0;
let start = new Date().getTime();
let i = 0;
do{
    count += i;
    i++
} while (i < 10000000000)
let end = new Date().getTime();

console.log((end - start)/1000)

OUTPUT -

I performed it 10 times and got the result in seconds

22.36
14.83
15.36
14.82
15.48
18.17
22.48
17.08
18.64
18.11

Averages -

• For loop - 15.87
• While loop - 17.14
• Do-while loop - 17.73

From my test results , For loop is slightly better than while and do-while but i am saying this with test results and i can be wrong as well

NOTE - While running the loop first time in every case the time taken is higher compared to other 9 test case, please mention the reason in the comment section if you know that.

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