ion-header
Header is a parent component that holds the toolbar component. It's important to note that ion-header needs to be the one of the three root elements of a page
Usage
- Angular
- Javascript
- React
- Stencil
- Vue
<ion-header>
  <ion-toolbar>
    <ion-buttons slot="start">
      <ion-back-button></ion-back-button>
    </ion-buttons>
    <ion-title>My Navigation Bar</ion-title>
  </ion-toolbar>
  <ion-toolbar>
    <ion-title>Subheader</ion-title>
  </ion-toolbar>
</ion-header>
<!-- Header without a border -->
<ion-header class="ion-no-border">
  <ion-toolbar>
    <ion-title>Header - No Border</ion-title>
  </ion-toolbar>
</ion-header>
<ion-content>
  <ion-header collapse="condense">
    <ion-toolbar>
      <ion-title size="large">My Navigation Bar</ion-title>
    </ion-toolbar>
  </ion-header>
</ion-content>
<ion-header>
  <ion-toolbar>
    <ion-buttons slot="start">
      <ion-back-button></ion-back-button>
    </ion-buttons>
    <ion-title>My Navigation Bar</ion-title>
  </ion-toolbar>
  <ion-toolbar>
    <ion-title>Subheader</ion-title>
  </ion-toolbar>
</ion-header>
<!-- Header without a border -->
<ion-header class="ion-no-border">
  <ion-toolbar>
    <ion-title>Header - No Border</ion-title>
  </ion-toolbar>
</ion-header>
<ion-content>
  <ion-header collapse="condense">
    <ion-toolbar>
      <ion-title size="large">My Navigation Bar</ion-title>
    </ion-toolbar>
  </ion-header>
</ion-content>
import React from 'react';
import { IonHeader, IonContent, IonToolbar, IonButtons, IonBackButton, IonTitle } from '@ionic/react';
export const HeaderExample: React.FC = () => (
  <>
    <IonHeader>
      <IonToolbar>
        <IonButtons slot="start">
          <IonBackButton defaultHref="/" />
        </IonButtons>
        <IonTitle>My Navigation Bar</IonTitle>
      </IonToolbar>
      <IonToolbar>
        <IonTitle>Subheader</IonTitle>
      </IonToolbar>
    </IonHeader>
    {/*-- Header without a border --*/}
    <IonHeader className="ion-no-border">
      <IonToolbar>
        <IonTitle>Header - No Border</IonTitle>
      </IonToolbar>
    </IonHeader>
    <IonContent>
      <IonHeader collapse="condense">
        <IonToolbar>
          <IonTitle size="large">My Navigation Bar</IonTitle>
        </IonToolbar>
      </IonHeader>
    </IonContent>
  </>
);
import { Component, h } from '@stencil/core';
@Component({
  tag: 'header-example',
  styleUrl: 'header-example.css',
})
export class HeaderExample {
  render() {
    return [
      <ion-header>
        <ion-toolbar>
          <ion-buttons slot="start">
            <ion-back-button></ion-back-button>
          </ion-buttons>
          <ion-title>My Navigation Bar</ion-title>
        </ion-toolbar>
        <ion-toolbar>
          <ion-title>Subheader</ion-title>
        </ion-toolbar>
      </ion-header>,
      // Header without a border
      <ion-header class="ion-no-border">
        <ion-toolbar>
          <ion-title>Header - No Border</ion-title>
        </ion-toolbar>
      </ion-header>,
      <ion-content>
        <ion-header collapse="condense">
          <ion-toolbar>
            <ion-title size="large">My Navigation Bar</ion-title>
          </ion-toolbar>
        </ion-header>
      </ion-content>,
    ];
  }
}
<template>
  <ion-header>
    <ion-toolbar>
      <ion-buttons slot="start">
        <ion-back-button></ion-back-button>
      </ion-buttons>
      <ion-title>My Navigation Bar</ion-title>
    </ion-toolbar>
    <ion-toolbar>
      <ion-title>Subheader</ion-title>
    </ion-toolbar>
  </ion-header>
  <!-- Header without a border -->
  <ion-header class="ion-no-border">
    <ion-toolbar>
      <ion-title>Header - No Border</ion-title>
    </ion-toolbar>
  </ion-header>
  <ion-content>
    <ion-header collapse="condense">
      <ion-toolbar>
        <ion-title size="large">My Navigation Bar</ion-title>
      </ion-toolbar>
    </ion-header>
  </ion-content>
</template>
<script>
  import { IonBackButton, IonButtons, IonContent, IonHeader, IonTitle, IonToolbar } from '@ionic/vue';
  import { defineComponent } from 'vue';
  export default defineComponent({
    components: {
      IonBackButton,
      IonButtons,
      IonContent,
      IonHeader,
      IonTitle,
      IonToolbar,
    },
  });
</script>
Properties
collapse
| Description | Describes the scroll effect that will be applied to the header condenseonly applies in iOS mode.Typically used for Collapsible Large Titles | 
| Attribute | collapse | 
| Type | "condense" \| undefined | 
| Default | undefined | 
mode
| Description | The mode determines which platform styles to use. | 
| Attribute | mode | 
| Type | "ios" \| "md" | 
| Default | undefined | 
translucent
| Description | If true, the header will be translucent.Only applies when the mode is "ios"and the device supportsbackdrop-filter.Note: In order to scroll content behind the header, the fullscreenattribute needs to be set on the content. | 
| Attribute | translucent | 
| Type | boolean | 
| Default | false |