要检查一个不受控制的复选框是否被选中,可以访问ref对象上的current.checked属性。 代码语言:javascript 代码运行次数:0 复制 Cloud Studio代码运行 import{useRef}from'react';exportdefaultfunctionApp(){constref=useRef(null);consthandleClick=()=>{if(ref.current.checked){console.log('✅ Checkbox is checke...
setReminder(false)} {/* checkbox here */} setReminder(e.currentTarget.checked)} /> Set reminder {/* submit button */} Submit
只需要在下面的checkbox里面加一个onChange事件来改变state里面的checked的值就可以了handleInputChange方法里面的代码如下：handleInputChange(event,index) { this.state.list[index].checked=event.target.checked;this.setState({list:this.state.list},()=>{ console.log(this.state.list);})} 全选方法allchecked...
<Form.Item name="remember" valuePropName="checked" wrapperCol={{ offset: 8, span: 16 }}> <Checkbox>Remember me</Checkbox> </Form.Item> <Form.Item wrapperCol={{ offset: 8, span: 16 }}> <Button type="primary" htmlType="submit"> Submit </Button> </Form.Item> </Form> ); }; ...
checkedenum: 0,1,2 defaultCheckedenum: 0,1,20same with native input checkbox onChangeFunction(e:Event, checked:Number)called when checkbox is changed. e is native event, checked is original checked state. Development Online demo:http://react-component.github.io/checkbox/ ...
// checkbox选择框是一个受限组件,用数据来决定它是否选中return({data.name})}});// 构造一个2000个数据的数组letdataArr=[];for(leti=0;i<2000;i++){letchecked=Math.random()<0.5;dataArr.push({name:i,checked});}React.render(<App dataArr={dataArr}/>,document.body); 这个就是我们的有性能...
To determine if a checkbox is checked or unchecked in React.js, use the state to manage the checkbox's status. Create a state variable with useState hook and initialize it to false. Attach an onChange event to the checkbox, updating the state with its ch
label="Password"name="password"rules={[{required:true,message:'Please input your password!'}]}><Input.Password/></Form.Item><Form.Item name="remember"valuePropName="checked"wrapperCol={{offset:8,span:16}}><Checkbox>Remember me</Checkbox></Form.Item><Form.Item wrapperCol={{offset:8,span...
if (e.target.checked){ checked[index] = true; // 勾选的话 将状态改为 true } else { checked[index] = false; // 取消勾选 将状态改为 false }但是 当我运行的时候,会报下面这个错误:我知道这应该是 componentWillMount 的时候 checked 为空,所以 checkbox 为不受控组件(checked 属性没有起作用)...
type="checkbox" checked={checked} onChange={e => setChecked(!checked) } /> ); } ReactDOM.render( <App/>, document.querySelector('my-app') ); I'm sure I'm missing something very simple, but can't identify it. I`m glad to inform you that this is already fixed in the dev ...