Vwwxrf

A Journey Through Space and Time

Why don't electron-positron collisions release infinite energy?

What typically incentivizes a professor to change jobs to a lower ranking university?

How is the claim "I am in New York only if I am in America" the same as "If I am in New York, then I am in America?

A function which translates a sentence to title-case

Why CLRS example on residual networks does not follows its formula?

How to get the available space of $HOME as a variable in shell scripting?

What defenses are there against being summoned by the Gate spell?

Is there a familial term for apples and pears?

What is the command to reset a PC without deleting any files

Symplectic equivalent of commuting matrices

Why are only specific transaction types accepted into the mempool?

How is it possible for user to changed after storage was encrypted? (on OS X, Android)

How do I create uniquely male characters?

Prevent a directory in /tmp from being deleted

Banach space and Hilbert space topology

If Manufacturer spice model and Datasheet give different values which should I use?

How old can references or sources in a thesis be?

I probably found a bug with the sudo apt install function

Is it tax fraud for an individual to declare non-taxable revenue as taxable income? (US tax laws)

XeLaTeX and pdfLaTeX ignore hyphenation

"You are your self first supporter", a more proper way to say it

Continuity at a point in terms of closure

Pronouncing Dictionary.com's W.O.D "vade mecum" in English

Javascript Loops & Closures

Async, callbacks, and closuresOverusing JavaScript closures?Using Javascript FileWriter with minimal use of closuresCorrectly dealing with closures and modularity in JavascriptCleaning if / else mess in Node.js poker gameLimiting function invocations using closuresOptimize Javascript function with many (maybe?) loops insideInteractive small townSimple JavaScript front-end framework for building web componentsShuffling an array keeping some elements fixed

.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty margin-bottom:0;

0

$begingroup$

I am reading the "You Don't Know JavaScript" series of books by Kyle Simpson and I am really enjoying it so far, it is so deep and full of JavaScript tips and tricks. I stumbled upon a closure section and I am unable to understand this code properly:

for (var i=1; i<=5; i++) 
setTimeout( function timer()
console.log( i );
, i*1000 );

As the author says most developers would assume that the numbers from 1 to 5 are printed but what happens is that 6 is printed 5 times in the console.

What I am struggling to understand is why the function that includes the timeout/timer is only executed after the loop is finished and not executed during the iteration of the i variable?

The setTimeout function is nested inside the for loop, but it's only executed after the for loop is finished 5 times! The author also mentions that even if the timeout was 0, the behavior would be the same. I hope someone can explain, as I am all new to this.

javascript

share

asked 4 mins ago

Arto KalishianArto Kalishian

1

New contributor

Arto Kalishian is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

$endgroup$

add a comment | 

0

$begingroup$

I am reading the "You Don't Know JavaScript" series of books by Kyle Simpson and I am really enjoying it so far, it is so deep and full of JavaScript tips and tricks. I stumbled upon a closure section and I am unable to understand this code properly:

for (var i=1; i<=5; i++) 
setTimeout( function timer()
console.log( i );
, i*1000 );

As the author says most developers would assume that the numbers from 1 to 5 are printed but what happens is that 6 is printed 5 times in the console.

What I am struggling to understand is why the function that includes the timeout/timer is only executed after the loop is finished and not executed during the iteration of the i variable?

The setTimeout function is nested inside the for loop, but it's only executed after the for loop is finished 5 times! The author also mentions that even if the timeout was 0, the behavior would be the same. I hope someone can explain, as I am all new to this.

javascript

share

asked 4 mins ago

Arto KalishianArto Kalishian

1

New contributor

Arto Kalishian is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

$endgroup$

add a comment | 

$begingroup$

I am reading the "You Don't Know JavaScript" series of books by Kyle Simpson and I am really enjoying it so far, it is so deep and full of JavaScript tips and tricks. I stumbled upon a closure section and I am unable to understand this code properly:

for (var i=1; i<=5; i++) 
setTimeout( function timer()
console.log( i );
, i*1000 );

As the author says most developers would assume that the numbers from 1 to 5 are printed but what happens is that 6 is printed 5 times in the console.

What I am struggling to understand is why the function that includes the timeout/timer is only executed after the loop is finished and not executed during the iteration of the i variable?

The setTimeout function is nested inside the for loop, but it's only executed after the for loop is finished 5 times! The author also mentions that even if the timeout was 0, the behavior would be the same. I hope someone can explain, as I am all new to this.

javascript

share

asked 4 mins ago

Arto KalishianArto Kalishian

1

New contributor

Arto Kalishian is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

$endgroup$

for (var i=1; i<=5; i++) 
setTimeout( function timer()
console.log( i );
, i*1000 );

share

asked 4 mins ago

Arto KalishianArto Kalishian

1

New contributor

Arto Kalishian is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

share

asked 4 mins ago

Arto KalishianArto Kalishian

1

New contributor

Arto Kalishian is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

asked 4 mins ago

Arto KalishianArto Kalishian

1

New contributor

Arto Kalishian is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

asked 4 mins ago

Arto KalishianArto Kalishian

1