Javascript jQuery 不是为 angular 2 定义的
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jQuery is not defined for angular 2
提问by user172902
I am trying to use ng2-datetime. However, when I follow the instruction and installed npm install --save ng2-datetime, I get the following error.
我正在尝试使用 ng2-datetime。但是，当我按照说明安装 npm install --save ng2-datetime 时，出现以下错误。
I have tried running the following npm install but it doesnt fix anything.
我试过运行以下 npm install 但它没有解决任何问题。
npm install jquery --save
npm install @types/jquery --save-dev
My package.json file
我的 package.json 文件
{
"name": "timesheet-web-app",
"version": "0.0.0",
"license": "MIT",
"angular-cli": {},
"scripts": {
"ng": "ng",
"start": "ng serve",
"lint": "tslint \"src/**/*.ts\"",
"test": "ng test",
"pree2e": "webdriver-manager update --standalone false --gecko false",
"e2e": "protractor"
},
"private": true,
"dependencies": {
"@angular/common": "^2.3.1",
"@angular/compiler": "^2.3.1",
"@angular/core": "^2.3.1",
"@angular/forms": "^2.3.1",
"@angular/http": "^2.3.1",
"@angular/platform-browser": "^2.3.1",
"@angular/platform-browser-dynamic": "^2.3.1",
"@angular/router": "^3.3.1",
"@ng-bootstrap/ng-bootstrap": "^1.0.0-alpha.18",
"angularfire2": "^2.0.0-beta.7",
"bootstrap": "^4.0.0-alpha.6",
"bootstrap-datepicker": "^1.6.4",
"core-js": "^2.4.1",
"firebase": "^3.6.6",
"jquery": "^3.1.1",
"ng2-datetime": "^1.2.2",
"ng2-datetime-picker": "^0.12.7",
"ng2-file-upload": "^1.2.0",
"rxjs": "^5.0.1",
"ts-helpers": "^1.1.1",
"zone.js": "^0.7.2"
},
"devDependencies": {
"@angular/compiler-cli": "^2.3.1",
"@types/jasmine": "2.5.38",
"@types/jquery": "^2.0.39",
"@types/node": "^6.0.42",
"angular-cli": "1.0.0-beta.24",
"codelyzer": "~2.0.0-beta.1",
"jasmine-core": "2.5.2",
"jasmine-spec-reporter": "2.5.0",
"karma": "1.2.0",
"karma-chrome-launcher": "^2.0.0",
"karma-cli": "^1.0.1",
"karma-jasmine": "^1.0.2",
"karma-remap-istanbul": "^0.2.1",
"protractor": "~4.0.13",
"ts-node": "1.2.1",
"tslint": "^4.0.2",
"typescript": "~2.0.3"
}
}
回答by Kacper Polak
You need to import jquery with angular-cli.
Edit your angular-cli.jsonfile.
您需要使用angular-cli. 编辑您的angular-cli.json文件。
Find scriptarray and add jquery.
查找script数组并添加 jquery。
"scripts": [
"../node_modules/jquery/dist/jquery.min.js"
],
回答by Anand Rockzz
Wasted a good amount of time, here is what I did and didn'thelp.
浪费了很多时间，这就是我所做但没有帮助的事情。
npm uninstall -g angular-cli
npm uninstall -g @angular/cli
npm cache clear --force
npm cache clean
npm install -g @angular/cli
and all other usual things,
以及所有其他常见的事情，
- clear browser cache
- restart browser
- kill and re-run ng serve
- 清除浏览器缓存
- 重新启动浏览器
- 杀死并重新运行 ng serve
In my case I had to do the following:
就我而言，我必须执行以下操作：
npm install --save @types/jquery
Import jquery in the .angular-cli.json
在 .angular-cli.json 中导入 jquery
"scripts": [
"../node_modules/jquery/dist/jquery.js"
],
change code from
更改代码
import $ from 'jquery';
to
到
import * as jquery from 'jquery';
note:issue started after angular upgrade from 4.2 to 5.2
注意：问题从 4.2 升级到 5.2 后开始
回答by alecellis1985
import * as $ from 'jquery';
import * as $ from 'jquery';
window['$'] = window['jQuery'] = $;
window['$'] = window['jQuery'] = $;
The sencond line will fix your issue!
第二行将解决您的问题！
