$ npm install gatsby
⚛️📄🚀 Blazing-fast static site generator for React
A <Link>
component for Gatsby.
It's a wrapper around React Router's Link component that adds enhancements specific to Gatsby. All props are passed through to React Router's Link.
You can set the activeStyle
or activeClassName
prop to add styling
attributes to the rendered element when it matches the current URL, and Gatsby
also supports React Router's props exact
, strict
, isActive
, and
location
. If any of these props are set, then
React Router's NavLink component
will be used instead of the default Link
.
Gatsby does per-route code splitting. This means that when navigating to a new page, the code chunks necessary for that page might not be loaded. This is bad. Any unnecessary latency when changing pages should be avoided. So to avoid that Gatsby preloads code chunks and page data.
Preloading is triggered by a link entering the viewport; Gatsby uses
Link
/NavLink
's innerRef
property to create a new InteractionObserver (on
supported browsers) to monitor visible links. This way, Gatsby only prefetches
code/data chunks for pages the user is likely to navigate to. You can also get
access to the link element by passing in a innerRef
prop.
npm install --save gatsby
In JavaScript:
import { Link } from "gatsby"
render () {
<div>
<Link
to="/another-page/"
activeStyle={{
color: 'red'
}}
innerRef={(el) => { this.myLink = el }}
>
Another page
</Link>
</div>
}
For cases when you can only use event handlers for navigation, you can use
navigateTo
:
import { navigateTo } from "gatsby"
render () {
<div onClick={ () => navigateTo('/example')}>
<p>Example</p>
</div>
}
Gatsby allows you to automatically prefix links for sites hosted on GitHub Pages or other places where your site isn't at the root of the domain.
This can create problems during development as pathnames won't be prefixed. To
handle both, gatsby-link exports a helper function withPrefix
that prepends
the prefix during production but doesn't in development.
This is only for pathnames you're constructing manually. The <Link>
component
handles prefixing automatically.
import { withPrefix } from "gatsby"
const IndexLayout = ({ children, location }) => {
const isHomepage = location.pathname === withPrefix("/")
return (
<div>
<h1>Welcome {isHomepage ? "home" : "aboard"}!</h1>
{children}
</div>
)
}
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