How to include local javascript on a Gatsby page?
Question Description: I’m a total React newbie and I guess there is something fundamental I don’t quite understand here. A default Gatsby page looks like this. Is there a way to use a local .js file somewhat like this?
<script src="../script/script.js"></script>
What I would like to achieve is to have react ignore script.js
but still have the client-side use it. A default Gatsby page looks like this, is it possible to do something like that there?
import React from "react"
import { Link } from "gatsby"
import Layout from "../components/layout"
import Image from "../components/image"
import SEO from "../components/seo"
const IndexPage = () => (
<Layout>
<SEO title="Home" keywords={[`gatsby`, `application`, `react`]} />
<h1>Hi people</h1>
<p>Welcome to your new Gatsby site.</p>
<p>Now go build something great.</p>
<div style={{ maxWidth: `300px`, marginBottom: `1.45rem` }}>
<Image />
</div>
<Link to="/page-2/">Go to page 2</Link>
</Layout>
)

Expert Answer
Method-1:
After several hours of frustration, I finally stumbled upon a discussion on GitHub that solved this for me. In Gatsby, there is a thing called static folder, for which one use case is including a small script outside of the bundled code.
Anyone else in the same situation, try proceeding as follows:
- Create a folder
static
to the root of your project. - Put your script
script.js
in the folderstatic
. - Include the script in your react dom with react-helmet.
So in the case of the code, I posted in my original question, for instance:
import React from "react"
import Helmet from "react-helmet"
import { withPrefix, Link } from "gatsby"
import Layout from "../components/layout"
import Image from "../components/image"
import SEO from "../components/seo"
const IndexPage = () => (
<Layout>
<Helmet>
<script src={withPrefix('script.js')} type="text/javascript" />
</Helmet>
<SEO title="Home" keywords={[`gatsby`, `application`, `react`]} />
<h1>Hi people</h1>
<p>Welcome to your new Gatsby site.</p>
<p>Now go build something great.</p>
<div style={{ maxWidth: `300px`, marginBottom: `1.45rem` }}>
<Image />
</div>
<Link to="/page-2/">Go to page 2</Link>
</Layout>
)
Notice the imports
import Helmet from "react-helmet"
import { withPrefix, Link } from "gatsby"
and the script element.
<Helmet>
<script src={withPrefix('script.js')} type="text/javascript" />
</Helmet>
This would have saved hours of my time, hopefully, this does it for someone else.
Method-2:
Just create gatsby-ssr.js
file on root folder
and add the following pattern for your scripts folder
import React from 'react'
export const onRenderBody = ({ setPostBodyComponents }) => {
setPostBodyComponents([
<script
key="https://code.jquery.com/jquery-3.2.1.slim.min.js"
src="https://code.jquery.com/jquery-3.2.1.slim.min.js"
integrity="sha384-KJ3o2DKtIkvYIK3UENzmM7KCkRr/rE9/Qpg6aAZGJwFDMVNA/GpGFF93hXpG5KkN"
crossOrigin="anonymous"
defer
/>,
<script
key="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.9/umd/popper.min.js"
src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.9/umd/popper.min.js"
integrity="sha384-ApNbgh9B+Y1QKtv3Rn7W3mgPxhU9K/ScQsAP7hUibX39j7fakFPskvXusvfa0b4Q"
crossOrigin="anonymous"
defer
/>,
<script
key="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js"
src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js"
integrity="sha384-JZR6Spejh4U02d8jOt6vLEHfe/JQGiRRSQQxSfFWpi1MquVdAyjUar5+76PVCmYl"
crossOrigin="anonymous"
defer
/>
])
}
Then, you at the end of dom you’ll see the links to scripts