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Showing content from https://ionicframework.com/docs/api/route below:

API Route Component for Ionic Framework Apps

The route component takes a component and renders it when the Browser URL matches the url property.

note

Note: this component should only be used with vanilla and Stencil JavaScript projects. For Angular projects, use ion-router-outlet and the Angular router.

Navigation hooks can be used to perform tasks or act as navigation guards. Hooks are used by providing functions to the beforeEnter and beforeLeave properties on each ion-route. Returning true allows navigation to proceed, while returning false causes it to be cancelled. Returning an object of type NavigationHookOptions allows you to redirect navigation to another page.

interface NavigationHookOptions {
  


  redirect: string;
}

• Javascript
• Stencil
• Vue

<ion-router>
  <ion-route url="/home" component="page-home"></ion-route>
  <ion-route url="/dashboard" component="page-dashboard"></ion-route>
  <ion-route url="/new-message" component="page-new-message"></ion-route>
  <ion-route url="/login" component="page-login"></ion-route>
</ion-router>

const dashboardPage = document.querySelector('ion-route[url="/dashboard"]');
dashboardPage.beforeEnter = isLoggedInGuard;

const newMessagePage = document.querySelector('ion-route[url="/dashboard"]');
newMessagePage.beforeLeave = hasUnsavedDataGuard;

const isLoggedInGuard = async () => {
  const isLoggedIn = await UserData.isLoggedIn(); 
  
  if (isLoggedIn) {
    return true;
  } else {
    return { redirect: '/login' }; 
  }
}

const hasUnsavedDataGuard = async () => {
  const hasUnsavedData = await checkData(); 
  
  if (hasUnsavedData) {
    return await confirmDiscardChanges();
  } else {
    return true;
  }
}

const confirmDiscardChanges = async () => {
  const alert = document.createElement('ion-alert');
  alert.header = 'Discard Unsaved Changes?';
  alert.message = 'Are you sure you want to leave? Any unsaved changed will be lost.';
  alert.buttons = [
    {
      text: 'Cancel',
      role: 'Cancel',
    },
    {
      text: 'Discard',
      role: 'destructive',
    }
  ];
  
  document.body.appendChild(alert);
  
  await alert.present();
  
  const { role } = await alert.onDidDismiss();
  
  return (role === 'Cancel') ? false : true;
}

import { Component, h } from '@stencil/core';
import { alertController } from '@ionic/core';

@Component({
  tag: 'router-example',
  styleUrl: 'router-example.css'
})
export class RouterExample {
  render() {
    return (
      <ion-router>
        <ion-route url="/home" component="page-home"></ion-route>
        <ion-route url="/dashboard" component="page-dashboard" beforeEnter={isLoggedInGuard}></ion-route>
        <ion-route url="/new-message" component="page-new-message" beforeLeave={hasUnsavedDataGuard}></ion-route>
        <ion-route url="/login" component="page-login"></ion-route>
      </ion-router>
    )
  }
}

const isLoggedInGuard = async () => {
  const isLoggedIn = await UserData.isLoggedIn(); 
  
  if (isLoggedIn) {
    return true;
  } else {
    return { redirect: '/login' }; 
  }
}

const hasUnsavedDataGuard = async () => {
  const hasUnsavedData = await checkData(); 
  
  if (hasUnsavedData) {
    return await confirmDiscardChanges();
  } else {
    return true;
  }
}

const confirmDiscardChanges = async () => {
  const alert = await alertController.create({
    header: 'Discard Unsaved Changes?',
    message: 'Are you sure you want to leave? Any unsaved changed will be lost.',
    buttons: [
      {
        text: 'Cancel',
        role: 'Cancel',
      },
      {
        text: 'Discard',
        role: 'destructive',
      }
    ]
  });
  
  await alert.present();
  
  const { role } = await alert.onDidDismiss();
  
  return (role === 'Cancel') ? false : true;
}

<template>
  <ion-router>
    <ion-route url="/home" component="page-home"></ion-route>
    <ion-route url="/dashboard" component="page-dashboard" :beforeEnter="isLoggedInGuard"></ion-route>
    <ion-route url="/new-message" component="page-new-message" :beforeLeave="hasUnsavedDataGuard"></ion-route>
    <ion-route url="/login" component="page-login"></ion-route>
  </ion-router>
</template>

<script>
  import { alertController } from '@ionic/vue';

  const isLoggedInGuard = async () => {
    const isLoggedIn = await UserData.isLoggedIn(); 
    
    if (isLoggedIn) {
      return true;
    } else {
      return { redirect: '/login' }; 
    }
  }
  
  const hasUnsavedDataGuard = async () => {
    const hasUnsavedData = await checkData(); 
    
    if (hasUnsavedData) {
      return await confirmDiscardChanges();
    } else {
      return true;
    }
  }
  
  const confirmDiscardChanges = async () => {
    const alert = await alertController.create({
      header: 'Discard Unsaved Changes?',
      message: 'Are you sure you want to leave? Any unsaved changed will be lost.',
      buttons: [
        {
          text: 'Cancel',
          role: 'Cancel',
        },
        {
          text: 'Discard',
          role: 'destructive',
        }
      ]
    });
    
    await alert.present();
    
    const { role } = await alert.onDidDismiss();
    
    return (role === 'Cancel') ? false : true;
  }
</script>

The value of this property is not always the tagname of the component to load, in ion-tabs it actually refers to the name of the ion-tab to select.

Accepts paths similar to expressjs so that you can define parameters in the url /foo/:bar where bar would be available in incoming props.

No public methods available for this component.

No CSS shadow parts available for this component.

No CSS custom properties available for this component.

No slots available for this component.

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