How to return an HTTP error in a response component?

Question

On the server side, how should the reactjs component notify the node application of the return of an http error?

My first idea is to throw an error:

var notFound = function () {
    var error = new Error("Not Found");
    error.httpError = 404;
    throw error;    
};

var App = React.createClass({
    render: function () {
        return react.DOM.div(null,
            Locations({path: this.props.path},
                Location({path: "/", handler: home}),
                NotFound({handler: notFound})
            )
        );
    }
});

try {
    res.send(React.renderComponentToString(app()));
}
catch (err) {
    if(err.httpError) {
        res.send(err.httpError);
    } else {
        throw err;
    }
}

Is this a valid solution? Do you have another idea?

EDIT: I would like to extend this case to redirect HTTP 3xx, which are not errors. Does it change anything?

Answer 1

I do not think this is related to React, but in fact in any environment.

I think this document will help you answer your own question: https://www.joyent.com/developers/node/design/errors

However, you should check out these (insufficiently) well-known rules from the Java world:

• Java:
• http://jtechies.blogspot.fr/2012/07/item-61-throw-exceptions-appropriate-to.html

React , http, http. React HTML, catch. , .

, , , , , (.. w have have httpError). , , . , res.send(undefined);, , , , , , - .

, , . , . - :

if ( ValidPaths.contains(path) ) {
   render()
} else {
   res.send(404)
}

, , , - stacktrace. DOS, . . , DOS, :)

, , Javascript - : (