One of the common mistake which I have seen like this.
var connect = function(callback) {
var b = new Obj();
b.once('connect', function() {
callback.apply(null, []);
});
b.once('error', function(error) {
callback.apply(null, [error]);
});
b.once('timeout', function(error) {
callback.apply(null, [error]);
});
};
var execute = function (data, callback) {
connect(function(err) {
if(err) {
callback.apply(null, [err]);
return;
}
//Do something,
callback.apply(null, []);
});
} ;
In this situation *execute() *is the function of the third party module
which I am using, and this callback gets called multiple times on some odd
situation. Most of the case its like a connect is successfully fired and
after that an error is being fired. By the time error is being called I
will have successfully completed all my operations. This is just a sample.
On Wednesday, 2 October 2013 20:08:05 UTC+5:30, jmar777 wrote:
>
> In general, if you're seeing a callback invoked multiple times (when it
> clearly shouldn't), you're not going to want to mask that problem on your
> end. You might get it to where your own callback is only invoked once, but
> there can be some detrimental side effects on the other side. That being
> said, if you determine it's appropriate in your situation, I've got a
> callback utility that helps with things like callback timeouts, multiple
> calls, etc.: https://github.com/jmar777/cb
>
> On Tuesday, October 1, 2013 1:17:11 AM UTC-4, jeevan kk wrote:
>>
>> I am using different 3rd party modules in my project. I have seen, in
>> some odd situations the 3rd party module which I am using is calling the
>> callback multiple times.
>>
>> Is there any general approach which I can follow so avoid such
>> situations.
>>
>
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