petite-router
v0.0.7
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A simple and tiny client-side router for single-page applications
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petite-router
A simple and tiny client-side SPA router.
Zero dependencies. Size < 3kB. High performance with a simple API.
Inspired by petite-vue and navaid.
Features
🚏 Configurable Routing
Define routes using r-path
HTML directives, making it straightforward to specify routing
information directly in your HTML markup. Supports wildcards and named parameters.
🪧 Dynamic Page Titles
Improve SEO and user experience by dynamically updating document titles using the r-title
directive.
💉 HTML Content Injection
Fetch and inject HTML content from a URL using the r-html
directive, with support for
loading indicators and error handling.
🚥 Route Parameters
Access route parameters and perform programmatic navigation with ease using the Router
instance,
which is attached to the window
object.
🪝 Navigation & Injection Hooks
Register callbacks to execute custom logic after navigation or HTML content injection using the
methods available on the Router
instance.
Installation
Using CDN
Add script tag to header:
<script type="module" defer>
import { createRouter } from 'https://unpkg.com/petite-router/dist/petite-router.es.js';
const router = createRouter().mount();
</script>
Alternatively, you can load the IIFE script:
<script src="https://unpkg.com/petite-router/dist/petite-router.iife.js" defer></script>
Using NPM
Install package:
npm install petite-router
Create and mount router:
import { createRouter } from 'petite-router';
const router = createRouter().mount();
Alternatively, you can import the IIFE script:
import 'petite-router/dist/petite-router.iife.js';
Installation with Petite-Vue
Petite-router and [petite-vue] can be used together.
However, some complications may arise when using HTML injection on elements subject to conditional directives.
It is recommended to setup in the same way as described in example/index.html.
Files
Download the files directly and use them in your project.
| File | Description | | ----------------------------------------------------------------------------------- | ---------------------------------------- | | petite-router.es.js | ECMAScript Module (ESM) bundle | | petite-router.umd.js | Universal Module Definition (UMD) bundle | | petite-router.iife.js | Immediately Invoked Function Expression |
Usage
Basic Example
This is an example of routing and content injection when using plain HTML/JS:
<script>
router.afterNavigation(() => {
// Print the route parameters from the current route and path
console.log(router.params)
// Update state variables
document.getElementById('userId').innerText = router.params.userId
});
</script>
<ul>
<li><a href="/">Home</a></li>
<li><a href="/about">About</a></li>
<li><a href="/users">Users</a></li>
<li><a href="/users/42">User #42</a></li>
</ul>
<div r-path="none">
Website Loading... This message will disappear when the JavaScript is loaded.
</div>
<div r-path="/" r-title="Home" hidden>
This is the homepage!
</div>
<div r-inject="/html/banner.html" hidden>
This will be replaced by HTML content fetched from /html/banner.html
</div>
<div r-path="/about" r-title="About Us" hidden>
About Us Page.
</div>
<div r-path="/users" r-title="Users" r-html="/html/users.html" hidden>
This will be replaced by HTML content fetched from /html/users.html after an anchor tag is hovered which matches <code>/users</code>.
</div>
<div r-path="/users/:userId" r-title="User Profile" hidden>
This is the page for user #<span id="userId"></span>.
</div>
<div r-path="/users/*" hidden>
This content will also appear for <code>/user/:userId</code>.
</div>
<div r-path="/users/**" hidden>
This content will also appear for both <code>/users</code> and <code>/user/:userId</code>.
</div>
<div r-path="404" r-title="Not Found" hidden>
Page Not Found: Sorry! This page does not exist.
</div>
For a more complex example, see the example site.
Defining Routes
Use the r-path
directive to define routes in your HTML elements.
Add an r-title
directive to update the document title.
<div r-path="/about" r-title="About Us" hidden>About Us Page</div>
[!TIP] Add the
hidden
attribute to your elements withr-path
to avoid flash of HTML content before the JavaScript is loaded.
[!NOTE] If no
r-title
attribute exists for any matchingr-path
route, the document title will revert to the original page title from when the router was mounted.
r-path
directive
Elements with r-path
that do not match the current URL path will have the hidden
attribute added.
Use these special values for r-path="<value>"
for specific scenarios:
404
- for when no route/path matches the current URLnone
- will always be hidden (after JavaScript router is mounted)
Supported path strings:
*
wildcard (e.g./*
->/foo
)**
recursive wildcard (e.g./**
->/foo/bar/baz
):param
wildcard attached to parameter (e.g./:param
->/foo
->foo
):param(*)
recursive wildcard attached to parameter (e.g./:param(*)
->/foo/bar/baz
->foo/bar/baz
)
r-title
Directive
Sets the document title dynamically based on the route.
If titles for multiple routes are active, it will use the last title of the last active route in document order.
HTML Injection
Fetch and inject HTML content from URLs using the r-html
directive.
The r-status
attribute will be added to describe the status of the fetch & injection.
<div r-html="/content.html">Loading...</div>
This will replace the inner HTML with the text content of the response.
[!CAUTION] Ensure content sources are trusted when injecting HTML content fetched from external URLs to prevent XSS attacks.
[!NOTE] If
r-status
already exists on the element, content will not be fetched/re-fetched.
[!WARNING] If HTML content contains a
<html>
tag, the injection will be refused because the content should be a snippet of raw HTML. If you are using an SPA server and mispell the path to a HTML resource, it may return a 404 page instead of your intended HTML snippet.
r-html
directive
The contents of r-html
will be fetched and injected onto the page when:
- The user navigates to a URL path which matches the
r-path
of the closest parent element - The user navigates to a URL path which is not contained by a
r-path
element - The hovers over an anchor tag where the
href
matches ther-path
of the closest parent element
You can place r-html
inside of a HTML snippet which is fetched by another r-html
request.
Recursive fetching is possible but not recommended.
r-status
directive
The r-status="<value>"
attribute will be added to describe the status of the HTML injection:
loading
- fetch still pendingsuccess
- content successfully fetched and added to DOMerror
- failed to fetch
Router Hooks and Methods
The Router
instance is attached to the window
object on mount, so you can use it anywhere.
afterNavigation
method
Register a callback called after the user navigates to a new URL path.
router.afterNavigation(() => {
// Do something required after the user navigates!
console.log("New route path:", router.path);
console.log("New route parameters:", router.params);
// e.g. Update state variables that may contain routing information.
localStorage.setItem('lastPageSeen', router.path);
});
afterInjection
method
Register a callback called after new HTML content is injected onto the page.
router.afterInjection(() => {
// Do something required after new HTML content is injected!
console.log("New content was injected!");
// e.g. Re-apply JavaScript enhancements.
document.querySelectorAll('button').forEach((el) => applyEnhancement(el));
});
match
function
Check whether the current URL path matches the specified path.
const isAboutSubpage = router.match('/about/**'); // true/false
const isUsersSubpage = router.match('/users/**', '/users/0/profile'); // true
const isUsersSubpage = router.match('/storage/:bucket/:key(*)/*.txt', '/storage/mybucket/path/to/my/file/file.txt'); // true
params
property
Get an object containing route parameter values for the current route.
// Route: /storage/:bucket/:key(*)/*.txt
// Path: /storage/mybucket/path/to/my/file/file.txt
const params = router.params // { bucket: 'mybucket', key: 'path/to/my/file' }
For additional methods, see the Router API Documentation .
Run the Example Site + Development Server
The example site demonstrates usage of petite-vue and petite-router with a number of routing, navigation and HTML injection demonstrations.
Clone the repository, install the dev dependencies:
git clone [email protected]:plasmatech8/petite-router.git
cd petite-router
npm install
Run the dev server:
npm run dev
Known Issues
r-html
does not work when insidev-if
orv-for
or any JavaScript DOM operation that mounts the tag after router is mounted.- There may be a way to re-mount the router, or re-run injections after JavaScript DOM operation is applied.
- Elements with
r-html
may get stuck withr-status="loading"
License
petite-router is licensed under the MIT License. See the LICENSE file for details.