Question

Ionic4项目中我们可以使用Ionic4组件ion-input对项目进行布局。

ion-input官方文档地址:https://ionicframework.com/docs/api/input

The input component is a wrapper to the HTML input element with custom styling and additional functionality. It accepts most of the same properties as the HTML input, but works great on desktop devices and integrates with the keyboard on mobile devices.

It is meant for text type inputs only, such as "text", "password", "email", "number", "search", "tel", and "url". It supports all standard text input events including keyup, keydown, keypress, and more.

ion-input　用法(Usage)

angularjavascriptreactvue

  Default Label
  



  Floating Label
  



  Fixed Label
  



  Stacked Label
  
</ion-item>

  Default Label
  



  Floating Label
  



  Fixed Label
  



  Stacked Label
  
</ion-item>

import React from 'react';

import { IonInput, IonItem, IonLabel } from '@ionic/react';

const Example: React.SFC = () => (
  
    {/*-- Default Input --*/}
    

    {/*-- Input with value --*/}
    

    {/*-- Input with placeholder --*/}
    

    {/*-- Input with clear button when there is a value --*/}
    

    {/*-- Number type input --*/}
    

    {/*-- Disabled input --*/}
    

    {/*-- Readonly input --*/}
    

    {/*-- Inputs with labels --*/}
    
      Default Label
      
    

    
      Floating Label
      
    

    
      Fixed Label
      
    

    
      Stacked Label
      
    
  
);

export default Example

  
  

  
  

  
  

  
  

  
  

  
  

  
  

  
  
    Default Label
    
  

  
    Floating Label
    
  

  
    Fixed Label
    
  

  
    Stacked Label
    
  
</template>

ion-input　属性(Properties)

accept
Description	If the value of the type attribute is "file", then this attribute will indicate the types of files that the server accepts, otherwise it will be ignored. The value must be a comma-separated list of unique content type specifiers.
Attribute	accept
Type	string | undefined
autocapitalize
Description	Indicates whether and how the text value should be automatically capitalized as it is entered/edited by the user.
Attribute	autocapitalize
Type	string
Default	'off'
autocomplete
Description	Indicates whether the value of the control can be automatically completed by the browser.
Attribute	autocomplete
Type	"off" | "on"
Default	'off'
autocorrect
Description	Whether auto correction should be enabled when the user is entering/editing the text value.
Attribute	autocorrect
Type	"off" | "on"
Default	'off'
autofocus
Description	This Boolean attribute lets you specify that a form control should have input focus when the page loads.
Attribute	autofocus
Type	boolean
Default	false
clearInput
Description	If true, a clear icon will appear in the input when there is a value. Clicking it clears the input.
Attribute	clear-input
Type	boolean
Default	false
clearOnEdit
Description	If true, the value will be cleared after focus upon edit. Defaults to true when type is "password", false for all other types.
Attribute	clear-on-edit
Type	boolean | undefined
color
Description	The color to use from your application's color palette. Default options are: "primary", "secondary", "tertiary", "success", "warning", "danger", "light", "medium", and "dark". For more information on colors, see theming.
Attribute	color
Type	string | undefined
debounce
Description	Set the amount of time, in milliseconds, to wait to trigger the ionChange event after each keystroke.
Attribute	debounce
Type	number
Default	0
disabled
Description	If true, the user cannot interact with the input.
Attribute	disabled
Type	boolean
Default	false
inputmode
Description	A hint to the browser for which keyboard to display. This attribute applies when the value of the type attribute is "text", "password", "email", or "url". Possible values are: "verbatim", "latin", "latin-name", "latin-prose", "full-width-latin", "kana", "katakana", "numeric", "tel", "email", "url".
Attribute	inputmode
Type	string | undefined
max
Description	The maximum value, which must not be less than its minimum (min attribute) value.
Attribute	max
Type	string | undefined
maxlength
Description	If the value of the type attribute is text, email, search, password, tel, or url, this attribute specifies the maximum number of characters that the user can enter.
Attribute	maxlength
Type	number | undefined
min
Description	The minimum value, which must not be greater than its maximum (max attribute) value.
Attribute	min
Type	string | undefined
minlength
Description	If the value of the type attribute is text, email, search, password, tel, or url, this attribute specifies the minimum number of characters that the user can enter.
Attribute	minlength
Type	number | undefined
mode
Description	The mode determines which platform styles to use.
Attribute	mode
Type	"ios" | "md"
multiple
Description	If true, the user can enter more than one value. This attribute applies when the type attribute is set to "email" or "file", otherwise it is ignored.
Attribute	multiple
Type	boolean | undefined
name
Description	The name of the control, which is submitted with the form data.
Attribute	name
Type	string
Default	this.inputId
pattern
Description	A regular expression that the value is checked against. The pattern must match the entire value, not just some subset. Use the title attribute to describe the pattern to help the user. This attribute applies when the value of the type attribute is "text", "search", "tel", "url", "email", or "password", otherwise it is ignored.
Attribute	pattern
Type	string | undefined
placeholder
Description	Instructional text that shows before the input has a value.
Attribute	placeholder
Type	null | string | undefined
readonly
Description	If true, the user cannot modify the value.
Attribute	readonly
Type	boolean
Default	false
required
Description	If true, the user must fill in a value before submitting a form.
Attribute	required
Type	boolean
Default	false
size
Description	The initial size of the control. This value is in pixels unless the value of the type attribute is "text" or "password", in which case it is an integer number of characters. This attribute applies only when the type attribute is set to "text", "search", "tel", "url", "email", or "password", otherwise it is ignored.
Attribute	size
Type	number | undefined
spellcheck
Description	If true, the element will have its spelling and grammar checked.
Attribute	spellcheck
Type	boolean
Default	false
step
Description	Works with the min and max attributes to limit the increments at which a value can be set. Possible values are: "any" or a positive floating point number.
Attribute	step
Type	string | undefined
type
Description	The type of control to display. The default type is text.
Attribute	type
Type	"date" | "email" | "number" | "password" | "search" | "tel" | "text" | "time" | "url"
Default	'text'
value
Description	The value of the input.
Attribute	value
Type	null | string | undefined
Default	''

ion-input　事件(Events)

Name	Description
ionBlur	Emitted when the input loses focus.
ionChange	Emitted when the value has changed.
ionFocus	Emitted when the input has focus.
ionInput	Emitted when a keyboard input ocurred.

ion-input　内置方法(Methods)

getInputElement
Desc