CODEWITHSUNDEEP
javascriptfor-loop
storval
storval

Reputation: 21

Can a for loop be incremented by a multiplication?

I'm trying to figure out if there is a way to console.log a set of numbers that are incremented by multiplication or how one can increase or decrease the increment of a for loop with something other than i++, ++i, i+=3

yes, I've looked everywhere for this, but maybe I'm thinking about a wrong loop or method. Every time I try to run this code it won't stop and it crashes my browser so I can't play around with it anymore to try to figure out what's wrong.

for (let ok = 2; ok < 100; ok * 3) {console.log(ok)}

My question is, why does the limit of 100 not work and how to multiply and console.log those numbers?

Upvotes: 1

Views: 2319

Answers (5)

Julien Ripet
Julien Ripet

Reputation: 557

Something like this should work, yeah

for (let ok = 2; ok < 100; ok = ok * 3) {console.log(ok)}

Edit: To precise why this works, the final-expression is a piece of code that is fired at the end of every loop, so you could even make it a function call if you wanted. But be careful of infinite loops

Upvotes: 0

katieisnell
katieisnell

Reputation: 1

The code is currently just multiplying ok by 3 but not setting ok to be the new value. This means the code runs forever as ok is not being increased. Instead try something like:

for (let ok = 2; ok < 100; ok = ok * 3) {console.log(ok)}

or the equivalent:

for (let ok = 2; ok < 100; ok =* 3) {console.log(ok)}

Upvotes: 0

Scott Schindler
Scott Schindler

Reputation: 1

Here you go:

for (let ok = 2; ok < 100; ok *= 3) {console.log(ok)}

This is the other way to write it:

for (let ok = 2; ok < 100; ok = ok * 3) {console.log(ok)}

Upvotes: 0

Roberto Bressani
Roberto Bressani

Reputation: 158

Use ok*=3since variable ok won't be updated with your statement

Upvotes: 1

Jeff McMahan
Jeff McMahan

Reputation: 1323

Try this:

for (let ok = 2; ok < 100; ok *= 3) {console.log(ok)}

Why does this work? Because x *= y is short for the reassignment statement: x = x * y. Your code is not increasing the value of ok; on every single iteration, you're just going to get 2 * 3, because ok is still 2. That's why your loop never ends - it never approaches 100.

Upvotes: 2

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