how can I import a js file in angular 6. I tried to implement a navbar and it contains js functions. thanks!!!
I Add my js file called nav.js
"scripts": [
"src/assets/js/nav.js"
]
-
1Working example to include jquery: stackoverflow.com/questions/43934727/…slashpm– slashpm2018-06-01 19:12:45 +00:00Commented Jun 1, 2018 at 19:12
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4 Answers
Angular 6 has a dedicated place to declare js files within the dedicated arrays of your angular.json, under
/projects/$(youProjectName)/architect/build/options/scripts[]
and
/projects/$(youProjectName)/architect/test/options/scripts[]
As an example:
npm install fast-levenshtein --save
will install a js library under node-modules
The path relative to the project of the js lib file is declared like this:
"scripts": [
"node_modules/fast-levenshtein/levenshtein.js"
]
Then declare in your component the variable(s) to use, either as described by the npm documentation or by @LuaXD
1 Comment
juniortan
what if it's a custom js file. how do i declare the variables
You should include on index.html, e.g:
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>A random project</title>
<base href="/">
<meta name="viewport" content="width=device-width, initial-
scale=1">
<link rel="icon" type="image/x-icon" href="favicon.ico">
</head>
<body>
<link rel="stylesheet" href="https://cartodb-
libs.global.ssl.fastly.net/cartodb.js/v3/3.15/themes/css/cartodb.css"
/>
<script src="https://cartodb-libs.global.ssl.fastly.net/cartodb.js/v3/3.15/cartodb.core.js"></script>
<app-root></app-root>
</body>
</html>
On this case I included cartodb.js library, then for use cartodb.js on any component, or service I use:
declare var cartodb: any;
At the beginning of any file (Component, Service, etc).
Note change cartodb by the name of the library you will use, for example for jquery is:
declare var jquery:any;
declare var $ :any;
You should have something like this:
import { Injectable } from '@angular/core';
// Other imports...
declare var cartodb: any;
@Injectable()
export class ARandomService {
}
P.s Search if the code you want to use doesn't exist in npm.
2 Comments
gauti
instead of using declare var, can't we import the files?
Sayed Mohd Ali
declare var cartodb: any; declare var jquery:any; declare var jquery-ui:any; I can import multiple libraries like that in my TypeScript?
first, you should install your library with npm. then the library is being added to your node_modules folder, in your project.
now:
if you want to import js files into the angular project, first you should check the version of angular, if you are using version 2 and 4 , you should write like this :
"scripts": [ "../node_modules/jquery/dist/jquery.min.js" ]
and if you are using version upper than 4, like 5,6 or 7 you should write like this :
"scripts": [ "./node_modules/jquery/dist/jquery.min.js" ]
in this example i import jquery into the angular project. i hope, it works
Comments
I suggest some workaround if you can grasp the functions within the script. So You either put them in your component.ts code as functions ,or if you can't/don't want to , you will just have to export/import them . for example
myscript.js
function a(){ ...}
function b(){...}
module.exports.a=a
module.exports.b=b
mycomponent.component.ts
..
import a from './path/../myscript.js';
import b from './path/../myscript.js';
..
constructor(){
...
a.a()
b.b()
...
}
ps:many times you will find function anonymous so you just have to rename them , for example
myscript.js
function(){..}();
will be
myscript.js
function myCustomName(){..};
module.exports.customName=myCustomName
