I\'m trying to write some CoffeScript function which checks all checkboxes in a table upon checking the checkbox in the th.
My function in CoffeeScript looks like th
Just add a true
as the last line of your function, and coffeescript will compile the JS to return that instead:
$("table.tableview th input:checkbox").live 'click', ->
checkedStatus = this.checked
$("table.tableview tbody tr td:first-child input:checkbox").each ->
this.checked = checkedStatus
true
In other words, CoffeeScript always returns the result of the last line (like Ruby does)
Edit (after the question was updated):
Again, you can't keep CoffeeScript from returning the value of the last line in a function - part of the point of CoffeeScript is that it does exactly that.
CoffeeScript has significant whitespace, so indentation is what says what belongs together - your example is is actually correct:
$("table.tableview th input:checkbox").live 'click', ->
checkedStatus = this.checked
$("table.tableview tbody tr td:first-child input:checkbox").each ->
this.checked = checkedStatus
true // cause this function (the each-iterator) to return true
true // causes the click handler function to return true
There's no difference between this and just writing return true
in a function like you would in javascript. You just use whitespace instead of {}
to make code blocks.