Connecting to a nearby version of Bootstrap causes CSS to malfunction

Currently, I am facing an issue while developing an angular+bootstrap application for my work. At the initial stages of development, I encountered a problem where all the CSS breaks whenever I link to a local copy of Bootstrap, whether minified or not.

My current setup looks like this:

<!DOCTYPE html>
<html lang="en">
<head>
    <title></title>
    <meta charset="UTF-8">
    <link rel="stylesheet" href="/client/app/lib/bootstrap/bootstrap.css">
    <!-- Latest compiled and minified CSS -->
    <!--<link rel="stylesheet"     href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css" 
    integrity="sha384-1q8mTJOASx8j1Au+a5WDVnPi2lkFfwwEAa8hDDdjZlpLegxhjVME1fgjWPGmkzs7" crossorigin="anonymous">-->
</head>
<nav>
        <ul class="nav nav-tabs" role="tablist">
            <li role="presentation"><a>Option A</a></li>
            <li role="presentation"><a>Option B</a></li>
            <li role="presentation"><a>Option C</a></li>
            <li role="presentation" class="active"><a>Option D</a></li>
        </ul>
</nav>
<body>


    <div class="container">
        <div class="panel panel-default">
            <div class="panel-body">Stuff goes here!</div>
        </div>
    </div>

</body>
</html>

By commenting out the CDN version of Bootstrap and uncommenting my local copy, everything works fine. I prefer relying on a local copy so I can work offline. Any assistance in resolving this issue would be highly appreciated.

EDIT

To confirm that the local path is correct, here is the project folder structure (excluding the node_modules folder contents)

Client
\---app
    +---core
    \---lib
         +---angular  (ignoring content of this folder)
         +---bootstrap
                bootstrap.css
         \---font-awesome-4.5.0 (ignoring content of this folder)
\---node_modules (ignoring content of this folder)
Server
   web-server.js

EDIT 2

While inspecting the developer tools in Chrome to identify any errors (thanks to Anonymouse for the suggestion), I came across the following:

Uncaught SyntaxError: Unexpected token <              bootstrap.js:1

Upon navigating to index.html, the script tag for bootstrap.js is highlighted where the error occurred.

Additionally, another error was recorded:

Resource interpreted as Stylesheet but transferred with MIME type text/html:
"http://localhost:7000/lib/bootstrap/boostrap.css"
htmlcsstwitter-bootstraptwitter-bootstrap-3

Answer №1

Avoid the use of CDN and opt for the local version available at this link. This choice is based on the benefits of simplicity, speed, and flexibility. My method involves creating a script in the root directory to update all the local libraries using the CDN, as outlined below:

mkdir updateLib
cd updateLib
mkdir css
mkdir js
mkdir img
cd css

REM use Curl -O http://cdn.url here (make sure to have cygwin installed)

cd ..
cd js

REM use Curl -O http://cdn.url here (make sure to have cygwin installed)

cd ..
cd ..
copy lib/img/* updateLib/img

rm -rfv lib
REN updateLib lib

msg %username% "libs updated!"

If you are facing issues with the CDN, this solution provides an alternative approach to address that concern.

Answer №2

Exciting Update!

After some thorough investigation, I finally identified the root cause of the issue. It turns out that the problem was within my server-side code.

For your reference, here is the snippet of the code:

var express = require('express');
var path = require('path');
var app = express();
var rootPath = path.normalize(__dirname + '/../');

app.use(express.static(rootPath + '/app'));

app.get('*', function(req, res) { res.sendFile( rootPath + 'client/app/core/index.html'); });

app.listen(8000);
console.log('Listening on port 8000...');

Upon closer inspection, I pinpointed the issue to this specific line:

app.use(express.static(rootPath + '/app');

It should have actually been:

app.use(express.static(rootPath + 'client/app');

My oversight in ensuring the correct path for express to scan for CSS and JS files led to this hiccup.

The valuable lesson learned here is to always pay attention to the intricate details and not overlook them.

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