The error of type TypeError has been encountered while using Bootstrap in conjunction with

I have encountered an issue while attempting to incorporate Bootstrap <link> and <script> tags into my HTML within an Angular project. I acquired all the content delivery network (CDN) links from this website, but unfortunately, I am receiving the subsequent error:

Uncaught TypeError: Cannot read property 'fn' of undefined
at bootstrap.min.js:6

Can someone guide me on what might be going wrong? Below is a snippet of my index.html file:

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title>App</title>
  <base href="./">

  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.0/css/bootstrap.min.css" integrity="sha384-9gVQ4dYFwwWSjIDZnLEWnxCjeSWFphJiwGPXr1jddIhOegiu1FwO5qRGvFXOdJZ4" crossorigin="anonymous">
  <link rel="icon" type="image/x-icon" href="favicon.ico">

</head>
<body>
  <app-root></app-root>

  <script src="https://code.jquery.com/jquery-3.3.1.slim.min.js" integrity="sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo" crossorigin="anonymous"></script>
  <script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.0/umd/popper.min.js" integrity="sha384-cs/chFZiN24E4KMATLdqdvsezGxaGsi4hLGOzlXwp5UZB1LY//20VyM2taTB4QvJ" crossorigin="anonymous"></script>
  <script src="https://stackpath.bootstrapcdn.com/bootstrap/4.1.0/js/bootstrap.min.js" integrity="sha384-uefMccjFJAIv6A+rW+L4AHf99KvxDjWSu1z9VI8SKNVmz4sk7buKt/6v9KI65qnm" crossorigin="anonymous"></script>
</body>
</html>

An update: I decided to include the electron tag in this question as it concerns an Angular project running with the Electron framework. I thought it might play a role in the problem at hand.

htmlcssangularbootstrap-4electron

Answer №1

Upon observation,

integrity="sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo" crossorigin="anonymous"

I have noticed an element that seems out of place, possibly causing the issue at hand.

FURTHERMORE

Why not consider adding bootstrap locally instead? It offers various benefits and is a common practice among developers.

  1. In your command line interface or coding program's console, input one of the following commands:

    (for Bootstrap 4 (in beta)):

    npm install bootstrap@next --save

    OR

    (for Bootstrap 3)

    npm install bootstrap --save

  2. Edit .angular-cli.json:

    "styles": [
"../node_modules/bootstrap/dist/css/bootstrap.min.css",
"styles.scss"
]

  3. Update src/style.css or src/style.scss:

    @import '~bootstrap/dist/css/bootstrap.min.css';

Alternatively, you can utilize ngx-bootstrap, an angular wrapper for bootstrap.

Keep in mind, there are pros and cons to this approach. Although ngx-bootstrap may lack certain components and updates from bootstrap, it is specifically designed for use within Angular projects.

Sources:

  • How to add bootstrap to an angular-cli project

Answer №2

This could be related to the following issue: link

Make sure you are including only the minified version (not the slim.min): 

<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>

Answer №3

Bootstrap depends on jQuery. When setting up your index HTML page, make sure to include the following script before importing any Javascript files:

<script>
  var $ = jQuery = require("jquery")
</script>

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