Angular 4 Bootstrap 下拉菜单需要 Popper.js

Question

I have a fresh created Angular 4 CLI app. After running this:

npm install bootstrap@4.0.0-beta jquery popper.js --save

and editing .angular-cli.json like this:

"styles": [
  "styles.css",
  "../node_modules/bootstrap/dist/css/bootstrap.min.css"
],
"scripts": [
  "../node_modules/jquery/dist/jquery.slim.min.js",
  "../node_modules/bootstrap/dist/js/bootstrap.min.js",
  "../node_modules/popper.js/dist/umd/popper.min.js"
],

I still have an issue in Chrome Console:

Uncaught Error: Bootstrap dropdown require Popper.js (https://popper.js.org)
    at eval (eval at webpackJsonp.../../../../script-loader/addScript.js.module.exports (addScript.js:9), <anonymous>:6:17548)
    at eval (eval at webpackJsonp.../../../../script-loader/addScript.js.module.exports (addScript.js:9), <anonymous>:6:23163)
    at eval (eval at webpackJsonp.../../../../script-loader/addScript.js.module.exports (addScript.js:9), <anonymous>:6:50902)
    at eval (<anonymous>)
    at webpackJsonp.../../../../script-loader/addScript.js.module.exports (addScript.js:9)
    at Object.../../../../script-loader/index.js!../../../../bootstrap/dist/js/bootstrap.min.js (bootstrap.min.js?f885:1)
    at __webpack_require__ (bootstrap a2f1d85ef068872b0530:54)
    at Object.2 (scripts.bundle.js:66)
    at __webpack_require__ (bootstrap a2f1d85ef068872b0530:54)
    at webpackJsonpCallback (bootstrap a2f1d85ef068872b0530:25)

How do I fix this?

Answer 1

Include popper.js before bootstrap.js :

"scripts": [
  "node_modules/jquery/dist/jquery.slim.min.js",
  "node_modules/popper.js/dist/umd/popper.min.js",
  "node_modules/bootstrap/dist/js/bootstrap.min.js"
],

Answer 2

For Angular 7

npm install bootstrap jquery popper.js --save

       "styles": [
          "src/styles.scss",
          "node_modules/bootstrap/dist/css/bootstrap.min.css"
        ],
        "scripts": [
          "node_modules/jquery/dist/jquery.slim.min.js",
          "node_modules/bootstrap/dist/js/bootstrap.min.js",
          "node_modules/popper.js/dist/umd/popper.min.js"
        ],

Answer 3

Was same issue, when I updated app to 8 version of Angular. As solution can use bootstrap bundle minified js file instead bootstrap.min.js. Bootstrap bundle included popper.js already. Need to fix angular.json ( scripts array in build section), in final will be something like this:

"scripts": [
    "./node_modules/jquery/dist/jquery.min.js",
    "./node_modules/bootstrap/dist/js/bootstrap.bundle.min.js",
],

For this solution popper.js is not needed in project. Can remove this module:

npm uninstall popper.js

just in case, jquery needed :)

Hope, help you

Answer 4

Form Angular 8 to 13

npm install bootstrap jquery popper.js --save

     "styles": [
      "src/styles.scss",
      "node_modules/bootstrap/dist/css/bootstrap.min.css"
    ],
    "scripts": [
      "node_modules/jquery/dist/jquery.slim.min.js",
      "node_modules/popper.js/dist/umd/popper.min.js",
      "node_modules/bootstrap/dist/js/bootstrap.min.js"
    ],

Answer 5

For Angular 12

npm install bootstrap jquery popper.js --save

 "styles": [
 "src/styles.scss",
 "node_modules/bootstrap/dist/css/bootstrap.min.css"
],
"scripts": [
  "node_modules/jquery/dist/jquery.slim.min.js",
  "node_modules/popper.js/dist/umd/popper.min.js",
  "node_modules/bootstrap/dist/js/bootstrap.min.js"
],

Answer 6

The new https://www.npmjs.com/package/@popperjs/core doesnt work with bootstrap 5.

it still requires the old https://www.npmjs.com/package/popper.js?ref=vanillalist deprecated package.

tried in angular 13, it doesnt work, so have to fall back.