thanks, I got it now 在 2013年10月15日星期二UTC+8下午7时53分10秒,mks写道: > > Not that nice. Mostly wrong. > What happens is something like: > > var module = { exports: {}} void function ( module, exports ){ > module.exports.name = 18 // assignment of the "name" property of the > "exports" object. > exports.answer = 42 // assignment of the "answer" property of the > "exports" local variable, that reference the "exports" property of the > "module" object. > module.exports = 23 // reassignment of the "export" property of the > "module" object. > exports = 100 // just a local variable. }( module, module.exports ) > > The rest is just basic understanding of how javascript handles references. > > On Tuesday, October 15, 2013 12:31:10 PM UTC+2, node-code wrote: >> >> Nice write-up here... >> http://www.hacksparrow.com/node-js-exports-vs-module-exports.html >> >> >> On Tue, Oct 15, 2013 at 3:52 PM, yougen zhuang <blu...@gmail.com> wrote: >> >>> Before assign value to exports, module.exports === exports, but after >>> assign value, they're not equal. In my view, they're point to the same >>> reference. >>> BTW, if I modify to module.exports.Rect = Rect, then module.exports === >>> exports >>> >>> function Rect(w,h) { >>> this.w = w; >>> this.h = h; >>> }; >>> >>> Rect.prototype.area = function(){ >>> return this.w*this.h; >>> }; >>> >>> console.log(module.exports === exports);//true >>> module.exports = Rect; >>> console.log(module.exports); >>> console.log(exports); >>> console.log(module.exports === exports);//false >>> >>> >>> -- >>> -- >>> Job Board: http://jobs.nodejs.org/ >>> Posting guidelines: >>> https://github.com/joyent/node/wiki/Mailing-List-Posting-Guidelines >>> You received this message because you are subscribed to the Google >>> Groups "nodejs" group. >>> To post to this group, send email to nod...@googlegroups.com >>> To unsubscribe from this group, send email to >>> nodejs+un...@googlegroups.com >>> For more options, visit this group at >>> http://groups.google.com/group/nodejs?hl=en?hl=en >>> >>> --- >>> You received this message because you are subscribed to the Google >>> Groups "nodejs" group. >>> To unsubscribe from this group and stop receiving emails from it, send >>> an email to nodejs+un...@googlegroups.com. >>> For more options, visit https://groups.google.com/groups/opt_out. >>> >> >>
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