如何使用按钮清除语义 UI React 中的多选下拉列表?
How to clear Multiselect Dropdown in Semantic UI React using a button?
我在 React 功能组件中有一个语义 UI React Multiselect Dropdown 并希望在菜单中包含按钮(仍然需要将它们居中...)
如何使用 'Clear' 按钮清除所选值?
我可以使用 'x' 图标清除选择,但它内置于组件中。
<Dropdown
search
multiple
selection
clearable
closeOnSelectionChange={false}
options={filterInitialSuggestions()}
className='selectDropdown'
header={dropdownButtons()}
/>
const dropdownButtons = () => {
return (
<div>
<Button positive size='mini'>
Save
</Button>
<Button grey size='mini' onClick={() => console.log('I want to reset the multi select dropdown')}>
Clear
</Button>
<Divider />
</div>
);
};
import React, { Component } from 'react';
import { Dropdown } from 'semantic-ui-react';
const options = [
{ key: 1, text: 'Choice 1', value: 1 },
{ key: 2, text: 'Choice 2', value: 2 },
{ key: 3, text: 'Choice 3', value: 3 },
{ key: 4, text: 'Choice 4', value: 4 },
{ key: 5, text: 'Choice 5', value: 5 },
{ key: 6, text: 'Choice 6', value: 6 },
]
class Example extends Component {
state = {
dropval: []
}
onDropChange = (e, { value }) => {
this.setState(
(prevState) => { return { ...prevState, dropval: value } },
// () => console.log(this.state)
)
}
render() {
return (
<div>
<Dropdown
search
multiple
selection
clearable
closeOnSelectionChange={false}
options={options}
className='selectDropdown'
onChange={this.onDropChange}
value={this.state.dropval}
style={{ width: 300 }}
/>
</div>
);
}
}
export default Example;
我想出了解决这个问题的方法。我不确定这是否是最好的方法,但它似乎工作正常。
const dropdownButtons = () => {
return (
<>
<div className='dropdown-saveButton'>
<Button
positive
size='mini'
onClick={() => {
saveValues();
}}
>
Save
</Button>
<Button size='mini' onClick={clearDropdown}>
Clear
</Button>
</div>
<Divider inverted />
</>
);
};
const clearDropdown = e => {
var element = dropdownRef.current.querySelector('[aria-selected="true"]');
if (element) {
dropdownRef.current.querySelector('.clear')?.click();
}
};
<Dropdown
multiple
selection
fluid
clearable
header={dropdownButtons} />
'Save' 和 'Clear' 按钮与 React useState()
。在 Reactjs 中你不需要使用 DOM queryselector.
https://codesandbox.io/s/white-leftpad-q6re3?file=/src/Fun.jsx
我在 React 功能组件中有一个语义 UI React Multiselect Dropdown 并希望在菜单中包含按钮(仍然需要将它们居中...)
如何使用 'Clear' 按钮清除所选值? 我可以使用 'x' 图标清除选择,但它内置于组件中。
<Dropdown
search
multiple
selection
clearable
closeOnSelectionChange={false}
options={filterInitialSuggestions()}
className='selectDropdown'
header={dropdownButtons()}
/>
const dropdownButtons = () => {
return (
<div>
<Button positive size='mini'>
Save
</Button>
<Button grey size='mini' onClick={() => console.log('I want to reset the multi select dropdown')}>
Clear
</Button>
<Divider />
</div>
);
};
import React, { Component } from 'react';
import { Dropdown } from 'semantic-ui-react';
const options = [
{ key: 1, text: 'Choice 1', value: 1 },
{ key: 2, text: 'Choice 2', value: 2 },
{ key: 3, text: 'Choice 3', value: 3 },
{ key: 4, text: 'Choice 4', value: 4 },
{ key: 5, text: 'Choice 5', value: 5 },
{ key: 6, text: 'Choice 6', value: 6 },
]
class Example extends Component {
state = {
dropval: []
}
onDropChange = (e, { value }) => {
this.setState(
(prevState) => { return { ...prevState, dropval: value } },
// () => console.log(this.state)
)
}
render() {
return (
<div>
<Dropdown
search
multiple
selection
clearable
closeOnSelectionChange={false}
options={options}
className='selectDropdown'
onChange={this.onDropChange}
value={this.state.dropval}
style={{ width: 300 }}
/>
</div>
);
}
}
export default Example;
我想出了解决这个问题的方法。我不确定这是否是最好的方法,但它似乎工作正常。
const dropdownButtons = () => {
return (
<>
<div className='dropdown-saveButton'>
<Button
positive
size='mini'
onClick={() => {
saveValues();
}}
>
Save
</Button>
<Button size='mini' onClick={clearDropdown}>
Clear
</Button>
</div>
<Divider inverted />
</>
);
};
const clearDropdown = e => {
var element = dropdownRef.current.querySelector('[aria-selected="true"]');
if (element) {
dropdownRef.current.querySelector('.clear')?.click();
}
};
<Dropdown
multiple
selection
fluid
clearable
header={dropdownButtons} />
'Save' 和 'Clear' 按钮与 React useState()
。在 Reactjs 中你不需要使用 DOM queryselector.
https://codesandbox.io/s/white-leftpad-q6re3?file=/src/Fun.jsx