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Whenever we are writing code, we need to remember that things may go wrong. If an error happens in a function, that error will be thrown. Errors can also happen in Observables, and in this lesson we will see what is the API for throwing and catching them.
var bar = Rx.Observable.create(function (observer) { try { console.log(‘Hello‘); observer.next(42); observer.next(100); observer.next(200); setTimeout(function () { observer.next(300); }, 1000); } catch (err) { observer.error(err); } }); bar.subscribe(function nextValueHandler(x) { console.log(x); }, function errorHandler(err) { console.log(‘Something went wrong: ‘ + err); });
[RxJS] Observables can throw errors
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原文地址：http://www.cnblogs.com/Answer1215/p/5373200.html
