Can I convert callback to promise?

2018-06-19 17:27:38

This question already has an answer here:

How do I convert an existing callback API to promises? 17 answers

getDetails('Bob').then(function (details) {
   console.log(details);
});

This work only if getDetails return a promise. To create a promise you need $q service.

So getDetails should looks like:

function getDetails(name){

    var defered = $q.defer();

    defered.resolve('BobDetails');

    return defered.promise;

}

Your callback will be called when the promise is resolved, and as param it will get 'BobDetails' in this example.

链接地址: http://www.djcxy.com/p/55530.html