CODEWITHSUNDEEP
javascriptcoffeescript
Loren
Loren

Reputation: 14896

How can I define event handlers inside a loop using the loop variable?

for a in [1,2,3]
  $('body').click (x) =>
    alert a

It alerts 3 three times when I click the body. I would like it to alert 1, 2, and 3.

Upvotes: 1

Views: 60

Answers (1)

Brian Genisio
Brian Genisio

Reputation: 48167

I screwed up the syntax the first time, but got it right this time:

You need to create a closure around the function and call it immediately (much like you would in Javascript). Coffeescript even gives you a nice syntax to do that for you... the do keyword:

for a in [1,2,3]
  do (a) ->
    $('body').click (x) =>
      alert a

Upvotes: 5

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