javascript - SyntaxError: expected expression, got '<'

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javascript - SyntaxError: expected expression, got '<'

posted Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

javascript - SyntaxError: expected expression, got '<'

I got SyntaxError: expected expression, got '<' error in the console when i'm executing following node code

var express = require('express');
var app = express();
app.all('*', function (req, res) {
  res.sendFile(__dirname+'/index.html') /* <= Where my ng-view is located */
})
var server = app.listen(3000, function () {
  var host = server.address().address
  var port = server.address().port
})

Error : enter image description here

I'm using Angular Js and it's folder structure like bellow

enter image description here

What's I’m missing here ?

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1 Reply

深蓝 · Answer 1 · 2021-10-16T23:07:28+0000

This code:

app.all('*', function (req, res) {
  res.sendFile(__dirname+'/index.html') /* <= Where my ng-view is located */
})

tells Express that no matter what the browser requests, your server should return index.html. So when the browser requests JavaScript files like jquery-x.y.z.main.js or angular.min.js, your server is returning the contents of index.html, which start with <!DOCTYPE html>, which causes the JavaScript error.

Your code inside the callback should be looking at the request to determine which file to send back, and/or you should be using a different path pattern with app.all. See the routing guide for details.

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javascript - SyntaxError: expected expression, got '<'

javascript - SyntaxError: expected expression, got '<'

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