问题
I was working with a NodeJS-ReactJS Isomorphic App, and when I click on a Link I'm getting an error saying
Uncaught (in promise) Error: Request has been terminated
Possible causes: the network is offline, Origin is not allowed by Access-Control-Allow-Origin, the page is being unloaded, etc.
The first two reasons (offline and CORS) I heard about. What is the the page is being unloaded error means? How it may cause the browser not navigating to need.
回答1:
Your Error is
Uncaught (in promise) Error: Request has been terminated
This error is caused when the request in the promise is terminated before it is resolved or rejected. This can happen if (Possible causes)
the network is offline: There is a network failure and the connection to the url using which the request was being processed is lost.Origin is not allowed by Access-Control-Allow-Origin: The request is rejected due to absence of proper CORS headers.the page is being unloaded: The page making the request is closed before the request completed.
Of the above reasons, the most probable cause relevant to your case would be either 1 or 2, since you get the error on clicking a Link to navigate to a component. Please check the requests being made by the new component that is being loaded using the Link.
Edit: If you look at the error message screen shot, it clearly states that the error occured at line no. 73194 of app.js at PromiseRequest in node_modules/superagent/lib/client.js.Request.crossDomainError. So the reason for your error is a CORS error which is described in number 2 above.
回答2:
'cause Link component is using Location.push to do the redirection, while Location.push method cannot redirect to another domain.
So my solutions are:
- Use
window.open('http://your.new.domain.com/index', '_self') - Use
<a href="http://your.new.domain.com/index">
回答3:
It seems you have not enabled the cors in your node server. Suggested Steps:
npm install cors
use it in app.js (node server)
.
var cors = require('cors');
var app = express();
app.use(cors()); //Enable CORS
来源：https://stackoverflow.com/questions/46726120/the-page-is-being-unloaded-error