Created
March 25, 2014 09:22
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coffeescript __extend helper for defining subclass
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__extends = function(child, parent) { | |
for (var key in parent) { | |
if (__hasProp.call(parent, key)) child[key] = parent[key]; | |
} | |
function ctor() { | |
// why set the prototype's constructor to child? | |
this.constructor = child; | |
} | |
ctor.prototype = parent.prototype; | |
child.prototype = new ctor; | |
child.__super__ = parent.prototype; | |
return child; | |
}; |
what is __hasProp
?
oh, I know
var __hasProp = {}.hasOwnProperty
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Is this correct ?