[![npm][npm]][npm-url] # Svelte Routing A declarative Svelte routing library with SSR support. [[CHANGELOG][changelog-url]] ## Install ```bash npm i -D svelte-routing ``` ## Usage ```html

``` ```javascript // main.js import App from "./App.svelte"; const app = new App({ target: document.getElementById("app"), }); ``` ## API #### `Router` The `Router` component supplies the `Link` and `Route` descendant components with routing information through context, so you need at least one `Router` at the top of your application. It assigns a score to all its `Route` descendants and picks the best match to render. `Router` components can also be nested to allow for seamless merging of many smaller apps. ###### Properties | Property | Required | Default Value | Description | | :--------------: | :------: | :-----------: | :---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | `basepath` | | `"/"` | The `basepath` property will be added to all the `to` properties of `Link` descendants and to all `path` properties of `Route` descendants. This property can be ignored in most cases, but if you host your application on e.g. `https://example.com/my-site`, the `basepath` should be set to `/my-site`. | | `url` | | `""` | The `url` property is used in SSR to force the current URL of the application and will be used by all `Link` and `Route` descendants. A falsy value will be ignored by the `Router`, so it's enough to declare `export let url = "";` for your topmost component and only give it a value in SSR. | | `viewtransition` | | `null` | View Transition (Experimental) | #### `Link` A component used to navigate around the application. ###### Properties | Property | Required | Default Value | Description | | :--------------: | :------: | :-----------: | :------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ | | `to` | ✔ ️ | `"#"` | URL the component should link to. | | `replace` | | `false` | When `true`, clicking the `Link` will replace the current entry in the history stack instead of adding a new one. | | `state` | | `{}` | An object that will be pushed to the history stack when the `Link` is clicked. | | `getProps` | | `() => ({})` | A function that returns an object that will be spread on the underlying anchor element's attributes. The first argument given to the function is an object with the properties `location`, `href`, `isPartiallyCurrent`, `isCurrent`. | | `preserveScroll` | | `false` | When `true`, clicking the `Link` will not scroll the page to the top. | #### `Route` A component that will render its `component` property or children when its ancestor `Router` component decides it is the best match. All properties other than `path` and `component` given to the `Route` will be passed to the rendered `component`. Potential path parameters will be passed to the rendered `component` as properties. A wildcard `*` can be given a name with `*wildcardName` to pass the wildcard string as the `wildcardName` property instead of as the `*` property. Potential path parameters are passed back to the parent using props, so they can be exposed to the slot template using `let:params`. ```html ``` The active status of link can be exposed to the slot template using `let:active`. ```html Browser ``` ###### Properties | Property | Required | Default Value | Description | | :---------: | :------: | :------------ | :----------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | `path` | | `""` | The path for when this component should be rendered. If no `path` is given the `Route` will act as the default that matches if no other `Route` in the `Router` matches. | | `component` | | `null` | The component constructor that will be used for rendering when the `Route` matches. If `component` is not set, the children of `Route` will be rendered instead. | #### `navigate` A function that allows you to imperatively navigate around the application for those use cases where a `Link` component is not suitable, e.g. after submitting a form. The first argument is a string denoting where to navigate to, and the second argument is an object with a `replace`, `state` and `preserveScroll` properties equivalent to those in the `Link` component. ```html ``` #### `link` An action used on anchor tags to navigate around the application. You can add an attribute `replace` to replace the current entry in the history stack instead of adding a new one and `preserveScroll` to not scroll the page to the top when clicked. ```html Home Replace this URL ``` #### `links` An action used on a root element to make all relative anchor elements navigate around the application. You can add an attribute `replace` on any anchor to replace the current entry in the history stack instead of adding a new one. You can add an attribute `preserveScroll` on any anchor to not to scroll the page to the top when clicked. You can add an attribute `noroute` for this action to skip over the anchor and allow it to use the native browser action. ```html

Home Replace this URL Use the native action

``` #### `viewtransition` Viewtransition for navigation (Experimental). _`builtin transition`_ ```html ``` _`custom transition`_ ```html ``` # License This project is licensed under the [**MIT**](LICENSE). # Contribution Unless you explicitly state otherwise, any contribution intentionally submitted for this project by you, shall be licensed as **MIT**, without any additional terms or conditions. [**Code of Conduct**](CODE_OF_CONDUCT.md). [npm]: https://img.shields.io/npm/v/svelte-routing.svg [npm-url]: https://npmjs.com/package/svelte-routing [changelog-url]: https://github.com/EmilTholin/svelte-routing/blob/master/CHANGELOG.md

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