javascript - Routes priority in express -

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i want implement following routes' priority in express (in order): custom urls, static files, error pages.

current did this:

let router = express.router();  // custom urls (defined me) router.get("/foo", ...);  app.use(router);  // static files app.use("/", express.static("path/to/public"));  // error pages (404, 500): router.use((req, res, next) => { res.send("custom 404 page."); }); router.use((err, req, res, next) => { res.send("custom 500 page."); });

the problem have i'm getting custom 404 page static files. if remove error page routes, static files work fine, don't custom 404 error pages , 500 error pages.

how can handle 400 , 500 custom error pages while keeping priority too?

considering static files in public folder relative index.js, works expected:

folder structure: 

- index.js - public     - index.html

your index.js:

"use strict"; let express = require('express'); let app = express();  let router = express.router();  // custom urls (defined me) app.get("/foo", function(req,res) {     res.send('yay') });  // static files app.use("/", express.static("public"));  // error pages (404, 500): router.use((req, res, next) => { res.send("custom 404 page."); }); router.use((err, req, res, next) => { res.send("custom 500 page."); });  app.use(router); // put here instead of beginning  app.listen(6666);

output of /foo:

$ http localhost:6666/foo http/1.1 200 ok connection: keep-alive content-length: 3 content-type: text/html; charset=utf-8 date: thu, 17 mar 2016 09:54:30 gmt etag: w/"3-qcrlhd4/n9pug7bkytwxxq" x-powered-by: express  yay

output of /:

$ http localhost:6666 http/1.1 200 ok accept-ranges: bytes cache-control: public, max-age=0 connection: keep-alive content-length: 129 content-type: text/html; charset=utf-8 date: thu, 17 mar 2016 09:51:15 gmt etag: w/"81-15383fa840c" last-modified: thu, 17 mar 2016 09:49:06 gmt x-powered-by: express  <!doctype html> <html lang="en"> <head>     <meta charset="utf-8">     <title>title</title> </head> <body> yay!!! </body> </html>

output of /bar:

$ http localhost:6666/bar http/1.1 200 ok connection: keep-alive content-length: 16 content-type: text/html; charset=utf-8 date: thu, 17 mar 2016 09:51:19 gmt etag: w/"10-creu2j3jd/vad5kvhqwlow" x-powered-by: express  custom 404 page.

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