Reactjs 反应如何将状态传递给另一个组件
您好,我拆分了我的应用程序,希望通过我的Reactjs 反应如何将状态传递给另一个组件,reactjs,ecmascript-6,components,state,Reactjs,Ecmascript 6,Components,State,您好,我拆分了我的应用程序,希望通过我的 我只是想用onClick切换函数 因此,当单击Button.js文件时,它将有1个按钮,并将状态切换为可见或不可见。menu component menu.js需要了解这些状态更改,以便切换功能并显示菜单 按钮组件 import React, { PureComponent } from 'react'; import CSSTransitionGroup from 'react-addons-css-transition-group'; import
我只是想用onClick切换函数
因此,当单击Button.js文件时,它将有1个按钮,并将状态切换为可见或不可见。menu component menu.js需要了解这些状态更改,以便切换功能并显示菜单
按钮组件
import React, { PureComponent } from 'react';
import CSSTransitionGroup from 'react-addons-css-transition-group';
import { themr } from 'react-css-themr';
import PropTypes from 'prop-types';
import classnames from 'classnames';
import localStyles from './NavButton.scss';
@themr('NavButton', localStyles)
export default class NavButton extends React.Component {
constructor(props) {
super(props);
this.state = {
visible: false,
};
this.toggleMenu = this.toggleMenu.bind(this);
}
toggleMenu() {
this.setState({
visible: !this.state.visible
})
console.log('toggle');
}
render() {
const {theme } = this.props;
return (
<div className={theme['nav-button']} onClick={this.toggleMenu}>
<span></span>
<span></span>
</div>
);
}
}
import React,{PureComponent}来自'React';
从“react addons css transition group”导入CSSTransitionGroup;
从'react css themr'导入{themr};
从“道具类型”导入道具类型;
从“类名称”导入类名称;
从“/NavButton.scss”导入本地样式;
@themr('NavButton',localStyles)
导出默认类NavButton扩展React.Component{
建造师(道具){
超级(道具);
此.state={
可见:假,
};
this.toggleMenu=this.toggleMenu.bind(this);
}
切换菜单(){
这是我的国家({
可见:!this.state.visible
})
log('toggle');
}
render(){
const{theme}=this.props;
返回(
);
}
}
菜单
import React, { PureComponent } from 'react';
import CSSTransitionGroup from 'react-addons-css-transition-group';
import { themr } from 'react-css-themr';
import PropTypes from 'prop-types';
import classnames from 'classnames';
import localStyles from './Menu.scss';
import { NavButton } from '../../components';
@themr('Menu', localStyles)
export default class Menu extends React.Component {
render() {
return (
<div className="menu-wrapper">
<CSSTransitionGroup
transitionName="menu"
transitionEnterTimeout={300}
transitionLeaveTimeout={300}>
{this.state.visible &&
<Menus alignment="right">
<MenuItem hash="first-page">First Page</MenuItem>
<MenuItem hash="second-page">Second Page</MenuItem>
<MenuItem hash="third-page">Third Page</MenuItem>
</Menus>}
</CSSTransitionGroup>
</div>
);
}
}
const Menus = ({alignment, children, theme }) => (
<div className="menu">
<div className={alignment}>{children}</div>
</div>
);
import React,{PureComponent}来自'React';
从“react addons css transition group”导入CSSTransitionGroup;
从'react css themr'导入{themr};
从“道具类型”导入道具类型;
从“类名称”导入类名称;
从“./Menu.scss”导入本地样式;
从“../../components”导入{NavButton};
@主题(“菜单”,本地样式)
导出默认类菜单扩展了React.Component{
render(){
返回(
{this.state.visible&&
首页
第二页
第三页
}
);
}
}
常量菜单=({alignment,children,theme})=>(
{儿童}
);
最好将应用程序的状态保持在最上面的组件,这样它就可以控制应用程序的大脑
如果将状态移动到菜单中,则可以将onClick回调传递到按钮中,例如
Menu.js
<NavButton toggleClick={this.handleClick} />
虽然您已将按钮组件导入菜单,但您并没有使用它,您还应该在菜单组件中保持状态
可见
,并通过按钮
组件与菜单
通信
export default class Menu extends React.Component {
constructor(props) {
super(props);
this.state = {
visible: false,
};
this.toggleMenu = this.toggleMenu.bind(this);
}
toggleMenu() {
this.setState({
visible: !this.state.visible
})
console.log('toggle');
}
render() {
return (
<NavButton toggleMenu={this.toggleMenu}/>
<div className="menu-wrapper">
<CSSTransitionGroup
transitionName="menu"
transitionEnterTimeout={300}
transitionLeaveTimeout={300}>
{this.state.visible &&
<Menus alignment="right">
<MenuItem hash="first-page">First Page</MenuItem>
<MenuItem hash="second-page">Second Page</MenuItem>
<MenuItem hash="third-page">Third Page</MenuItem>
</Menus>}
</CSSTransitionGroup>
</div>
);
}
}
const Menus = ({alignment, children, theme }) => (
<div className="menu">
<div className={alignment}>{children}</div>
</div>
);
您的Menu.js与Button.js相同。按钮和菜单如何连接在一起?您可以添加您的容器组件吗?您可以将状态保存在容器的单个位置,将状态切换到菜单作为道具。我正在将按钮组件导入我的菜单,并希望更改此状态。状态。单击按钮时可见,我还更新了代码
export default class Menu extends React.Component {
constructor(props) {
super(props);
this.state = {
visible: false,
};
this.toggleMenu = this.toggleMenu.bind(this);
}
toggleMenu() {
this.setState({
visible: !this.state.visible
})
console.log('toggle');
}
render() {
return (
<NavButton toggleMenu={this.toggleMenu}/>
<div className="menu-wrapper">
<CSSTransitionGroup
transitionName="menu"
transitionEnterTimeout={300}
transitionLeaveTimeout={300}>
{this.state.visible &&
<Menus alignment="right">
<MenuItem hash="first-page">First Page</MenuItem>
<MenuItem hash="second-page">Second Page</MenuItem>
<MenuItem hash="third-page">Third Page</MenuItem>
</Menus>}
</CSSTransitionGroup>
</div>
);
}
}
const Menus = ({alignment, children, theme }) => (
<div className="menu">
<div className={alignment}>{children}</div>
</div>
);
export default class NavButton extends React.Component {
render() {
const {theme } = this.props;
return (
<div className={theme['nav-button']} onClick={this.props.toggleMenu}>
<span></span>
<span></span>
</div>
);
}
}