Thank you! 2013. március 28., csütörtök 21:09:07 UTC+1 időpontban José F. Romaniello a következőt írta: > > You can do two things. Use > bind<https://developer.mozilla.org/en-US/docs/JavaScript/Reference/Global_Objects/Function/bind> > : > > DescriptorValue.prototype.parse = function() { > > var currentModuleName = GLOBALS.PARSERSDIR+this.parameters.name+'.js'; > fs.exists(currentModuleName, function(exists) { > if (exists) { > var currentparser = require(currentModuleName); > currentparser.parse(this); > } else { > //getValue(); > } > }.bind(this)); > } > > or declare a new variable and store the value of this: > > DescriptorValue.prototype.parse = function() { > var currentModuleName = GLOBALS.PARSERSDIR+this.parameters.name+'.js'; > var self = this; > > fs.exists(currentModuleName, function(exists) { > if (exists) { > var currentparser = require(currentModuleName); > currentparser.parse(self); > } else { > //getValue(); > } > }); > }; > > either approach is okay for this case. > > > > 2013/3/28 Perrier <[email protected] <javascript:>> > >> Hi, >> >> I have a class (DescriptorValue) and its following function: >> >> DescriptorValue.prototype.parse = function() { >> var currentModuleName = GLOBALS.PARSERSDIR+this.parameters.name+'.js'; >> fs.exists(currentModuleName, function(exists) { >> if (exists) { >> var currentparser = require(currentModuleName); >> * currentparser.parse(this);* >> } else { >> //getValue(); >> } >> }); >> } >> >> I'd like to pass the DescriptorValue object itself to the parse method of >> the loaded module (currentparser) in the line with bold. I've seen several >> examples but can not solve this. Should I change this structure thus >> DescriptorValue's parse method shouldn't exist? This way the task of this >> method could be done from a function outside. But still, how can I pass a >> local variable into fs.exists' callback? >> Could you please help me? >> >> Thanks, Peter >> >> -- >> -- >> 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 [email protected]<javascript:> >> To unsubscribe from this group, send email to >> [email protected] <javascript:> >> 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 [email protected] <javascript:>. >> For more options, visit https://groups.google.com/groups/opt_out. >> >> >> > >
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