Bibliothèque Javascript pour charger des pages en utilisant ajax et remplacer le contenu de la page actuelle. Cela change le titre, l'url, le css et le javascript. Vous pouvez utiliser cette bibliothèque pour améliorer la vitesse de chargement des pages et créer de belles transitions de page. Il présente les caractéristiques suivantes :
D'autres bibliothèques ayant un objectif similaire sont barba.js, turbolinks ou Highway. L'objectif principal du page-loader est d'être plus léger et moins magique, afin d'être plus flexible et personnalisable.
Exigences:
npm install @oom/page-loader
Commençons par le code html suivant :
<!DOCTYPE html >
< html >
< head >
< meta charset =" utf-8 " >
< title > Page title </ title >
< link rel =" stylesheet " href =" styles.css " >
< script src =" scripts.js " > </ script >
</ head >
< body >
< nav class =" menu " >
< a href =" section1.html " > Section 1 </ a >
< a href =" section2.html " > Section 2 </ a >
< a href =" section3.html " > Section 3 </ a >
</ nav >
< main class =" content " >
< h1 > This is the first section </ h1 >
< p > Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod
tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam,
quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo
consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse
cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non
proident, sunt in culpa qui officia deserunt mollit anim id est laborum. </ p >
</ main >
</ body >
</ html >
Utilisez javascript pour une expérience complète :
import Navigator from "./vendors/@oom/page-loader/src/navigator.js" ;
const nav = new Navigator ( async ( load , event ) => {
//Load the page
const page = await load ( ) ;
await page . replaceStyles ( ) ; //Load the new css styles defined in <head> not present currently
await page . replaceScripts ( ) ; //Load the new js files defined in <head> not present currently
await page . replaceContent ( "main" ) ; //Replace the <main> element
await page . updateState ( ) ; //Update the page status (change url, title etc)
await page . resetScroll ( ) ; //Reset the scroll position
} ) ;
//Init the navigation, capturing all clicks in links and form submits
nav . init ( ) ;
//Optionally, you can filter links and forms to disable this behaviour
nav . addFilter ( ( el ) => ! el . classList . contains ( "no-loader" ) ) ;
//For example, to disable forms:
nav . addFilter ( ( el ) => el . tagName !== "FORM" ) ;
//Subscribe to events
nav . on ( "error" , ( err ) => console . error ( err ) ) ;
//You can go manually to other url when you want
nav . go ( "https//example.com/page2.html" ) ;
//Or submit a form via ajax
const form = document . getElementById ( "my-form" ) ;
nav . submit ( form ) ;
//And handle downloads (links with download attribute)
nav . download ( async ( download , event , link ) => {
link . classList . add ( "downloading" ) ;
await download ( ) ;
link . classList . remove ( "downloading" ) ;
} ) ;
Une instance de page contient les informations sur la page chargée. Il possède les méthodes et propriétés suivantes :
const nav = new Navigator ( async ( load , event , target , submitter ) => {
//By clicking a link, the target is the A element
//By submitting a form, the target is the form but you can get the submitter element (the button being pressed)
const trigger = submitter || target ;
trigger . classList . add ( "loading" ) ;
const page = await load ( ) ;
//Replace an element in the document with the same element in the page
await page . replaceContent ( "#content" ) ;
//Append the children of the loaded page to the same element in the document
await page . appendContent ( "#content" ) ;
//Remove content from the document
await page . removeContent ( "#content > .unwanted" ) ;
//Change the css styles used in the new page (<link rel="stylesheet"> in <head>).
await page . replaceStyles ( ) ;
//Change the js styles used in the new page (<script src="..."> in <head>).
await page . replaceScripts ( ) ;
//Performs a document.querySelector in the page. Throws an exception on empty result
await page . querySelector ( "p" ) ;
//Performs a document.querySelectorAll in the page. Throws an exception on empty result
await page . querySelectorAll ( "p" ) ;
//Runs a history.pushState changing the url and title.
await page . updateState ( ) ;
//Reset the page scroll to top (or to the #target element)
await page . resetScroll ( ) ;
page . dom ; //HTMLDocument with the content of the page
page . url ; //The url of the loaded page
page . status ; //The http status code of the ajax response
trigger . classList . remove ( "loading" ) ;
} ) ;
Il y a une démo en ligne ici : https://oom-components.github.io/page-loader/