harmony 鸿蒙input

2023-06-24
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input

The <input> component provides an interactive interface to receive user input. It can be a radio button, check box, or button.

NOTE

This component is supported since API version 4. Updates will be marked with a superscript to indicate their earliest API version.

Child Components

Not supported

Attributes

Name	Type	Default Value	Mandatory	Description
type	string	button	No	Type of the component, which cannot be dynamically modified. The options are as follows: - button: a button that can be clicked. - checkbox: a check box. - radio: a radio button that allows users to select one from multiple others with the same name.
checked	boolean	false	No	Whether the component is selected. This attribute is valid only when type is set to checkbox or radio.
name	string	-	No	Name of the component.
value	string	-	No	Value of the component. When type is radio, this attribute is mandatory and the value must be unique for radio buttons with the same name.
id	string	-	No	Unique ID of the component.
style	string	-	No	Style declaration of the component.
class	string	-	No	Style class of the component, which is used to refer to a style table.
ref	string	-	No	Reference information of child elements, which is registered with the parent component on $refs.

Events

When type is set to checkbox or radio, the following events are supported. |Name|Parameter|Description| |——–|——–|——–| |change|{ checked:true |false }|Triggered when the checked status of the checkbox or radio button changes.| |click|-|Triggered when the component is clicked.| |longpress|-|Triggered when the component is long pressed.| |swipe⁵⁺|SwipeEvent|Triggered when a user quickly swipes on the component.|
When type is set to button, the following events are supported. |Name|Parameter|Description| |——–|——–|——–| |click|-|Triggered when the component is clicked.| |longpress|-|Triggered when the component is long pressed.| |swipe⁵⁺|SwipeEvent|Triggered when a user quickly swipes on the component.|

Styles

Name	Type	Default Value	Mandatory	Description
color	<color>	#ffffff	No	Text color of the component.
font-size	<length>	30px	No	Font size of the component.
width	<length>	-	No	Width of the component. The default value for a button is 100px.
height	<length>	-	No	Height of the component. The default value for a button is 50px.
font-family	string	SourceHanSansSC-Regular	No	Font. Only the SourceHanSansSC-Regular font is supported.
padding	<length>	0	No	Shorthand attribute to set the padding for all sides. The attribute can have one to four values: - If you set only one value, it specifies the padding for all the four sides. - If you set two values, the first value specifies the top and bottom padding, and the second value specifies the left and right padding. - If you set three values, the first value specifies the top padding, the second value specifies the left and right padding, and the third value specifies the bottom padding. - If you set four values, they respectively specify the padding for top, right, bottom, and left sides (in clockwise order).
padding-[left\|top\|right\|bottom]	<length>	0	No	Left, top, right, and bottom padding.
margin	<length> \|<percentage>⁵⁺	0	No	Shorthand attribute to set the margin for all sides. The attribute can have one to four values: - If you set only one value, it specifies the margin for all the four sides. - If you set two values, the first value specifies the top and bottom margins, and the second value specifies the left and right margins. - If you set three values, the first value specifies the top margin, the second value specifies the left and right margins, and the third value specifies the bottom margin. - If you set four values, they respectively specify the margin for top, right, bottom, and left sides (in clockwise order).
margin-[left\|top\|right\|bottom]	<length> \|<percentage>⁵⁺	0	No	Left, top, right, and bottom margins.
border-width	<length>	0	No	Shorthand attribute to set the margin for all sides.
border-color	<color>	black	No	Shorthand attribute to set the color for all borders.
border-radius	<length>	-	No	Radius of round-corner borders.
background-color	<color>	-	No	Background color.
display	string	flex	No	How and whether to display the box containing an element. Available values are as follows: - flex: flexible layout - none: not rendered
[left\|top]	<length> \|<percentage>⁶⁺	-	No	Edge of the element. - left: left edge position of the element. This attribute defines the offset between the left edge of the margin area of a positioned element and left edge of its containing block. - top: top edge position of the element. This attribute defines the offset between the top edge of a positioned element and that of a block included in the element.

Example

Common button

   <!-- xxx.hml -->
   <div class="div-button">
     <input class="button" type="button" value="Input-Button"></input>
   </div>

   /* xxx.css */
   .div-button {
     flex-direction: column;
     align-items: center;
     width: 100%;
     height: 100%;
   }
   .button {
     margin-top: 30px;
     width: 280px;
   }

input-type-button

Check box

   <!-- xxx.hml -->
   <div class="content">
     <input onchange="checkboxOnChange" checked="true" type="checkbox"></input>
     <text class="text">{{text}}</text>
   </div>

   /* xxx.css */
   .content{
     width: 100%;
     height: 100%;
     flex-direction: column;
     align-items: center; 
     justify-content: center;   
   }
   .text{
     font-size: 30px;
     text-align: center;
     width: 200px;
     margin-top: 20px;
     height: 100px;
   }

   // xxx.js
   export default {
     data: {
       text: "text"
     },
     checkboxOnChange(e) {
       this.text = e.checked;
     }
   }

input-type-checkbox

Radio button

   <!-- xxx.hml -->
   <div class="container">
     <div class="item">
       <input type="radio" checked="true" name="radioSample" value="radio1" onchange="onRadioChange"></input>
       <text class="text">radio1</text>
     </div>
     <div class="item">
       <input type="radio" checked="false" name="radioSample" value="radio2" onchange="onRadioChange"></input>
       <text class="text">radio2</text>
     </div>
     <div class="item">
       <input type="radio" checked="false" name="radioSample" value="radio3" onchange="onRadioChange"></input>
       <text class="text">radio3</text>
     </div>
   </div>

   /* xxx.css */
   .container {
     width: 100%;
     height: 100%;
     justify-content: center;
     align-items: center;
     flex-direction: column;
   }
   .item {
     width: 50%;
     height: 30%;
     justify-content: center;
   }
   .text {
     margin-top: 25%;
     font-size: 30px;
     text-align: center;
     width: 200px;
     height: 100px;
   }

input-type-radio