On 27 May 2013 08:55, Sanford Whiteman <sa...@figureone.com> wrote: > Please put an example in jsfiddle.net to check out. There is certainly > nothing in Moo that will "break" for-in in JS. >
.. Er. Yes, there is, though it is not MooTools' fault. MooTools is prototypal. It extends natives, including Array. When iterating through array members with a `for in` construct, it will also loop through enumerable properties from the proto. Two things. 1. use `hasOwnProperty` to check the property is on the array; or--better-yet, 2: don't use an operator meant for looping Object keys on an Array. It works, because Arrays in JavaScript are Objects with extra Array-like properties but that's not the point. There are very few cases where you'd use this on purpose, eg. sparse arrays. MooTools has `Array.prototype.each` for working with Arrays. ES5 has `.forEach`. -- Dimitar Christoff "JavaScript is to JAVA what hamster is to ham" @D_mitar - https://github.com/DimitarChristoff -- --- You received this message because you are subscribed to the Google Groups "MooTools Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to mootools-users+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
