Angular 4 Bootstrap dropdown require Popper.js

问题

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?

回答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"
],

回答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"
        ],

回答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

回答4:

For Angular 8

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"
    ],

来源：https://stackoverflow.com/questions/45680644/angular-4-bootstrap-dropdown-require-popper-js