添加属性';选定的';在ReactJs中选中复选框
我正在react项目中使用添加属性';选定的';在ReactJs中选中复选框,reactjs,checkbox,Reactjs,Checkbox,我正在react项目中使用组件。代码是 App.jsx import React, { Component } from 'react' import { connect } from 'react-redux'; import Checkbox from '../../../components/Checkbox/Checkbox.jsx'; class App extends Component { render() { return ( <div class
组件。代码是
App.jsx
import React, { Component } from 'react'
import { connect } from 'react-redux';
import Checkbox from '../../../components/Checkbox/Checkbox.jsx';
class App extends Component {
render() {
return (
<div className="App">
<div style={{ 'float': 'left', 'background': 'white' }}><Checkbox
input={{
name: 'sampleName',
onChange: (e) => this.onSelect(e.target.checked),
value: allSelected
}}
/></div>
</div>
)
}
}
export default connect(
)(App);
import React,{Component}来自“React”
从'react redux'导入{connect};
从“../../../components/Checkbox/Checkbox.jsx”导入复选框;
类应用程序扩展组件{
render(){
返回(
此.onSelect(例如,target.checked),
值:allSelected
}}
/>
)
}
}
导出默认连接(
)(App);
Checkbox.jsx
import React from 'react';
import './Checkbox.scss';
class Checkbox extends React.Component {
render() {
const { input: {name, size, value, onChange}, disabled } = this.props;
return (
<div className="checkbox">
<input disabled={disabled} id={name} type="checkbox" value={value} onChange={onChange} />
<label htmlFor={name} className={size}/>
</div>
);
}
}
export default Checkbox;
class Checkbox extends React.Component {
render() {
const { input: {name, size, value, onChange}, disabled, checked } = this.props;
return (
<div className="checkbox">
<input disabled={disabled} checked={checked} id={name} type="checkbox" value={value} onChange={onChange} />
<label htmlFor={name} className={size}/>
</div>
);
}
从“React”导入React;
导入“./Checkbox.scss”;
类复选框扩展了React.Component{
render(){
const{input:{name,size,value,onChange},disabled}=this.props;
返回(
);
}
}
导出默认复选框;
我想在
标记中再添加一个属性选中:{Item.Selected}
,为此,我需要在Checkbox.jsx页面中进行更改,以获取属性Selected
?的值。您正在调用的属性称为prop in react。将道具传递给组件时,可以使用该组件中的this.props
获取道具。因此,您的文件应如下所示:
App.jsx:
import React, { Component } from 'react'
import { connect } from 'react-redux';
import Checkbox from '../../../components/Checkbox/Checkbox.jsx';
class App extends Component {
render() {
return (
<div className="App">
<div style={{ 'float': 'left', 'background': 'white' }}><Checkbox
checked={Item.Selected}
input={{
name: 'sampleName',
onChange: (e) => this.onSelect(e.target.checked),
value: allSelected
}}
/></div>
</div>
)
}
}
export default connect(
)(App);
import React,{Component}来自“React”
从'react redux'导入{connect};
从“../../../components/Checkbox/Checkbox.jsx”导入复选框;
类应用程序扩展组件{
render(){
返回(
此.onSelect(例如,target.checked),
值:allSelected
}}
/>
)
}
}
导出默认连接(
)(App);
Checkbox.jsx:
import React from 'react';
import './Checkbox.scss';
class Checkbox extends React.Component {
render() {
//the checked variable added below:
const { input: {name, size, value, onChange}, disabled, checked } = this.props;
return (
<div className="checkbox">
<input disabled={disabled} id={name} type="checkbox" value={value} onChange={onChange} />
<label htmlFor={name} className={size}/>
</div>
);
}
}
export default Checkbox;
从“React”导入React;
导入“./Checkbox.scss”;
类复选框扩展了React.Component{
render(){
//选中的变量添加到下面:
const{input:{name,size,value,onChange},disabled,checked}=this.props;
返回(
);
}
}
导出默认复选框;
您正在调用的属性在react中称为prop。将道具传递给组件时,可以使用该组件中的this.props
获取道具。因此,您的文件应如下所示:
App.jsx:
import React, { Component } from 'react'
import { connect } from 'react-redux';
import Checkbox from '../../../components/Checkbox/Checkbox.jsx';
class App extends Component {
render() {
return (
<div className="App">
<div style={{ 'float': 'left', 'background': 'white' }}><Checkbox
checked={Item.Selected}
input={{
name: 'sampleName',
onChange: (e) => this.onSelect(e.target.checked),
value: allSelected
}}
/></div>
</div>
)
}
}
export default connect(
)(App);
import React,{Component}来自“React”
从'react redux'导入{connect};
从“../../../components/Checkbox/Checkbox.jsx”导入复选框;
类应用程序扩展组件{
render(){
返回(
此.onSelect(例如,target.checked),
值:allSelected
}}
/>
)
}
}
导出默认连接(
)(App);
Checkbox.jsx:
import React from 'react';
import './Checkbox.scss';
class Checkbox extends React.Component {
render() {
//the checked variable added below:
const { input: {name, size, value, onChange}, disabled, checked } = this.props;
return (
<div className="checkbox">
<input disabled={disabled} id={name} type="checkbox" value={value} onChange={onChange} />
<label htmlFor={name} className={size}/>
</div>
);
}
}
export default Checkbox;
从“React”导入React;
导入“./Checkbox.scss”;
类复选框扩展了React.Component{
render(){
//选中的变量添加到下面:
const{input:{name,size,value,onChange},disabled,checked}=this.props;
返回(
);
}
}
导出默认复选框;
不确定是否正确理解了这一点,但我是否正确理解了。
App.jsx
类应用程序扩展组件{
render(){
返回(
此.onSelect(例如,target.checked),
值:allSelected
}}
选中={(您的条件,评估为真/假)}
disabled={whatever}
/>
)
}
}
然后
Checkbox.jsx
import React from 'react';
import './Checkbox.scss';
class Checkbox extends React.Component {
render() {
const { input: {name, size, value, onChange}, disabled } = this.props;
return (
<div className="checkbox">
<input disabled={disabled} id={name} type="checkbox" value={value} onChange={onChange} />
<label htmlFor={name} className={size}/>
</div>
);
}
}
export default Checkbox;
class Checkbox extends React.Component {
render() {
const { input: {name, size, value, onChange}, disabled, checked } = this.props;
return (
<div className="checkbox">
<input disabled={disabled} checked={checked} id={name} type="checkbox" value={value} onChange={onChange} />
<label htmlFor={name} className={size}/>
</div>
);
}
class复选框扩展了React.Component{
render(){
const{input:{name,size,value,onChange},disabled,checked}=this.props;
返回(
);
}
希望这有帮助!不确定是否正确理解了这一点,但我是否正确理解了。 App.jsx
类应用程序扩展组件{
render(){
返回(
此.onSelect(例如,target.checked),
值:allSelected
}}
选中={(您的条件,评估为真/假)}
disabled={whatever}
/>
)
}
}
然后
Checkbox.jsx
import React from 'react';
import './Checkbox.scss';
class Checkbox extends React.Component {
render() {
const { input: {name, size, value, onChange}, disabled } = this.props;
return (
<div className="checkbox">
<input disabled={disabled} id={name} type="checkbox" value={value} onChange={onChange} />
<label htmlFor={name} className={size}/>
</div>
);
}
}
export default Checkbox;
class Checkbox extends React.Component {
render() {
const { input: {name, size, value, onChange}, disabled, checked } = this.props;
return (
<div className="checkbox">
<input disabled={disabled} checked={checked} id={name} type="checkbox" value={value} onChange={onChange} />
<label htmlFor={name} className={size}/>
</div>
);
}
class复选框扩展了React.Component{
render(){
const{input:{name,size,value,onChange},disabled,checked}=this.props;
返回(
);
}
希望这有帮助!