# <dialog> Development
The **<dialog>** component is custom pop-up container for showing critical information or calling for an action. For details, see [dialog](../reference/apis-arkui/arkui-js/js-components-container-dialog.md).
## Creating a <dialog> Component
Create a **<dialog>** component in the .hml file under **pages/index** and add **<button>** components to trigger the **<dialog>**. The **<dialog>** component supports only the **width**, **height**, **margin**, **margin-[left|top|right|bottom]**, and **margin-[start|end]** styles.
```html
<!-- xxx.hml -->
<div class="doc-page">
<dialog class="dialogClass" id="dialogId" dragable="true">
<div class="content">
<text>this is a dialog</text>
</div>
</dialog>
<button value="click me" onclick="opendialog"></button>
</div>
```
```css
/* xxx.css */
.doc-page {
width:100%;
height:100%;
flex-direction: column;
align-items: center;
justify-content: center;
background-color: #F1F3F5;
}
.dialogClass{
width: 80%;
height: 250px;
margin-start: 1%;
}
.content{
width: 100%;
height: 250px;
justify-content: center;
background-color: #e8ebec;
border-radius: 20px;
}
text{
width: 100%;
height: 100%;
text-align: center;
}
button{
width: 70%;
height: 60px;
}
```
```js
// xxx.js
export default {
//Touch to open the dialog box.
opendialog(){
this.$element('dialogId').show()
},
}
```
## Setting Dialog Box Response
Add a **cancel** event that is triggered when a user touches a non-dialog area to cancel the pop-up dialog box. Add the **show** and **close** methods to display and close the dialog box, respectively.
```html
<!-- xxx.hml -->
<div class="doc-page">
<dialog class="dialogClass" id="dialogId" oncancel="canceldialog">
<div class="dialogDiv">
<text>dialog</text>
<button value="confirm" onclick="confirmClick"></button>
</div>
</dialog>
<button value="click me" onclick="opendialog"></button>
</div>
```
```css
/* xxx.css */
.doc-page {
width:100%;
height:100%;
flex-direction: column;
align-items: center;
justify-content: center;
background-color: #F1F3F5;
}
.dialogClass{
width: 80%;
height: 300px;
margin-start: 1%;
}
.dialogDiv{
width: 100%;
flex-direction: column;
justify-content: center;
align-self: center;
}
text{
height: 100px;
align-self: center;
}
button{
align-self: center;
margin-top: 20px;
width: 60%;
height: 80px;
}
```
```js
// xxx.js
import promptAction from '@ohos.promptAction';
export default {
canceldialog(e){
promptAction.showToast({
message: 'dialogCancel'
})
},
opendialog(){
this.$element('dialogId').show()
promptAction.showToast({
message: 'dialogShow'
})
},
confirmClick(e) {
this.$element('dialogId').close()
promptAction.showToast({
message: 'dialogClose'
})
},
}
```
> **NOTE**
>
> - This component supports only one child component.
>
> - Attributes and styles of a **<dialog>** component cannot be dynamically updated.
>
> - The **<dialog>** component does not support the **focusable** and **click-effect** attributes.
## Example Scenario
Use the **<dialog>** component to implement a schedule. When the dialog box is open, use the [<textarea>](../reference/apis-arkui/arkui-js/js-components-basic-textarea.md) component to add an event and touch the OK button to obtain the current time and save the input text. The events in the calendar are displayed in a list.
```html
<!-- xxx.hml -->
<div class="doc-page">
<text style="margin-top: 60px;margin-left: 30px;">
<span>{{date}} events</span>
</text>
<div class="btndiv">
<button type="circle" class="btn" onclick="addschedule">+</button>
</div>
<!-- for Render events data -->
<list style="width: 100%;">
<list-item type="item" for="schedulelist" style="width:100%;height: 200px;">
<div class="schedulediv">
<text class="text1">{{date}} event</text>
<text class="text2">{{$item.schedule}}</text>
</div>
</list-item>
</list>
<dialog id="datedialog" oncancel="canceldialog" >
<div class="dialogdiv">
<div class="innertxt">
<text class="text3">{{date}}</text>
<text class="text4">New event</text>
</div>
<textarea placeholder="Event information" onchange="getschedule" class="area" extend="true"></textarea>
<div class="innerbtn">
<button type="text" value="Cancel" onclick="cancelschedule" class="btntxt"></button>
<button type="text" value="OK" onclick="setschedule" class="btntxt"></button>
</div>
</div>
</dialog>
</div>
```
```css
/* xxx.css */
.doc-page {
flex-direction: column;
background-color: #F1F3F5;
}
.btndiv {
width: 100%;
height: 200px;
flex-direction: column;
align-items: center;
justify-content: center;
}
.btn {
radius:60px;
font-size: 100px;
background-color: #1E90FF;
}
.schedulediv {
width: 100%;
height: 200px;
flex-direction: column;
justify-content: space-around;
padding-left: 55px;
}
.text1 {
color: #000000;
font-weight: bold;
font-size: 39px;
}
.text2 {
color: #a9a9a9;
font-size: 30px;
}
.dialogdiv {
flex-direction: column;
align-items: center;
}
.innertxt {
width: 320px;
height: 160px;
flex-direction: column;
align-items: center;
justify-content: space-around;
}
.text3 {
font-family: serif;
color: #1E90FF;
font-size: 38px;
}
.text4 {
color: #a9a9a9;
font-size: 33px;
}
.area {
width: 320px;
border-bottom: 1px solid #1E90FF;
}
.innerbtn {
width: 320px;
height: 120px;
justify-content: space-around;
}
.btntxt {
text-color: #1E90FF;
}
```
```js
// xxx.js
var info = null;
import promptAction from '@ohos.promptAction';
export default {
data: {
curYear:'',
curMonth:'',
curDay:'',
date:'',
schedule:'',
schedulelist:[]
},
onInit() {
// Obtain the current date.
var date = new Date();
this.curYear = date.getFullYear();
this.curMonth = date.getMonth() + 1;
this.curDay = date.getDate();
this.date = this.curYear + '-' + this.curMonth + '-' + this.curDay;
this.schedulelist = []
},
addschedule(e) {
this.$element('datedialog').show()
},
canceldialog(e) {
promptAction.showToast({
message: 'Event setting canceled.'
})
},
getschedule(e) {
info = e.value
},
cancelschedule(e) {
this.$element('datedialog').close()
promptAction.showToast({
message: 'Event setting canceled.'
})
},
// Touch OK to save the data.
setschedule(e) {
if (e.text === '') {
this.schedule = info
} else {
this.schedule = info
var addItem = {schedule: this.schedule,}
this.schedulelist.push(addItem)
}
this.$element('datedialog').close()
}
}
```
