Javascript 反应-如何在另一个组件中显示图像onClick事件中的组件?
我有3个组件: -主页-在显示图像时需要在此处显示组件 从标题组件中单击 -标题-包含将被单击以删除的图像标记 显示AllSites组件 -AllSites-在显示图像时需要在主组件中显示的组件 在标题组件中单击 标题Javascript 反应-如何在另一个组件中显示图像onClick事件中的组件?,javascript,reactjs,Javascript,Reactjs,我有3个组件: -主页-在显示图像时需要在此处显示组件 从标题组件中单击 -标题-包含将被单击以删除的图像标记 显示AllSites组件 -AllSites-在显示图像时需要在主组件中显示的组件 在标题组件中单击 标题 export class Header extends React.Component<any, any> { private readonly searchServerUrl = ""; private ap
export class Header extends React.Component<any, any> {
private readonly searchServerUrl = "";
private appButtonElement: HTMLElement;
constructor(props: any) {
super(props);
this.state = { showAppMenu: false };
}
render() {
const { showAppMenu } = this.state;
const { className, navItems, singleColumn, appItems } = this.props;
return (
<header className={className}>
<div className="app-icon">
<button className="nav-button" onClick={() => this.toggleAppMenu()} ref={(menuButton: any) => this.appButtonElement = menuButton}><i className="ms-Icon ms-Icon--Waffle" aria-hidden="true"></i></button>
</div>
***When image is clicked, show the <AllSites/> component in the HomeComponent below.***
<img src="/Styles/Images/logo/loop-logo-white.png" className="nav-logo" onClick={} />
{showAppMenu ? <ApplicationMenu navItems={appItems} targetElement={this.appButtonElement} onDismiss={() => this.onDismiss()} /> : null}
<div className="nav-container"><TopNavigation classNam
e={className} navItems={navItems} singleColumn={singleColumn} /></div>
<div className="search-container">
<SearchBox onSearch={(searchTerm: string) => this.executeSearch(searchTerm)} />
</div>
</header>
);
}
导出类头扩展React.Component{
私有只读searchServerUrl=“”;
私有appButtonElement:HTMLElement;
构造器(道具:任何){
超级(道具);
this.state={showAppMenu:false};
}
render(){
const{showAppMenu}=this.state;
const{className,navItems,singleColumn,appItems}=this.props;
返回(
this.toggleAppMenu()}ref={(menuButton:any)=>this.appButtonElement=menuButton}>
***单击图像时,在下面的HomeComponent中显示组件。***
{showAppMenu?this.onDismiss()}/>:null}
this.executeSearch(searchTerm)}/>
);
}
主页
export class HomeComponent extends React.Component<any, any> {
constructor(props: any) {
super(props);
this.state = { navItems: [], appItems: [], singleColumnLayout: false, showAllSites: false };
}
componentDidMount() {
this.checkWidth();
window.addEventListener("resize", this.checkWidth.bind(this));
this.fetchNavigation()
.then(nav => this.setState({ navItems: nav }));
this.fetchAppIcons()
.then(icons => this.setState({ appItems: icons }));
}
componentWillUnmount(): void {
window.addEventListener("resize", this.checkWidth.bind(this));
}
render() {
const { navItems, appItems, singleColumnLayout } = this.state;
return (
<Fabric>
<Header navItems={navItems} appItems={appItems} singleColumn={singleColumnLayout} />
<div className="main-container">
<AlertBar />
<div className="main-content">
<div className="ms-Grid">
<Hero singleColumn={singleColumnLayout} />
<div className="ms-Grid-row">
<div className="ms-Grid-col ms-sm12 ms-xl4 webpart-container">
<UpcomingEvents />
</div>
<div className="ms-Grid-col ms-sm12 ms-xl4 webpart-container">
<EmployeeNews />
</div>
<div className="ms-Grid-col ms-sm12 ms-xl4 webpart-container">
<div className="ms-Grid-row">
<div className="ms-Grid-col ms-sm12 webpart-container">
<IndustryNews />
</div>
<div className="ms-Grid-col ms-sm12 webpart-container">
<Quote />
</div>
</div>
</div>
</div>
</div>
<Footer navItems={navItems} />
</div>
</div>
</Fabric>
);
}
导出类HomeComponent扩展React.Component{
构造器(道具:任何){
超级(道具);
this.state={navItems:[],appItems:[],singleColumnLayout:false,showAllSites:false};
}
componentDidMount(){
这是checkWidth();
window.addEventListener(“resize”,this.checkWidth.bind(this));
this.fetchNavigation()
.then(nav=>this.setState({navItems:nav}));
this.fetchAppIcons()
.then(icons=>this.setState({appItems:icons}));
}
componentWillUnmount():void{
window.addEventListener(“resize”,this.checkWidth.bind(this));
}
render(){
const{navItems,appItems,singleColumnLayout}=this.state;
返回(
单击图像标记时,我需要在此处呈现
组件
export class HomeComponent extends React.Component<any, any> {
constructor(props: any) {
super(props);
this.state = { navItems: [], appItems: [], singleColumnLayout: false, showAllSites: false };
}
componentDidMount() {
this.checkWidth();
window.addEventListener("resize", this.checkWidth.bind(this));
this.fetchNavigation()
.then(nav => this.setState({ navItems: nav }));
this.fetchAppIcons()
.then(icons => this.setState({ appItems: icons }));
}
componentWillUnmount(): void {
window.addEventListener("resize", this.checkWidth.bind(this));
}
render() {
const { navItems, appItems, singleColumnLayout } = this.state;
return (
<Fabric>
<Header navItems={navItems} appItems={appItems} singleColumn={singleColumnLayout} />
<div className="main-container">
<AlertBar />
<div className="main-content">
<div className="ms-Grid">
<Hero singleColumn={singleColumnLayout} />
<div className="ms-Grid-row">
<div className="ms-Grid-col ms-sm12 ms-xl4 webpart-container">
<UpcomingEvents />
</div>
<div className="ms-Grid-col ms-sm12 ms-xl4 webpart-container">
<EmployeeNews />
</div>
<div className="ms-Grid-col ms-sm12 ms-xl4 webpart-container">
<div className="ms-Grid-row">
<div className="ms-Grid-col ms-sm12 webpart-container">
<IndustryNews />
</div>
<div className="ms-Grid-col ms-sm12 webpart-container">
<Quote />
</div>
</div>
</div>
</div>
</div>
<Footer navItems={navItems} />
</div>
</div>
</Fabric>
);
}
);
}
最简单的方法是,您的主页
和标题
需要一个公共父组件,该组件将为它们保存一些共享状态,并通过回调将此状态更新为标题
的道具。在共享状态下,您需要一个负责显示/隐藏所有站点的标志代码>组件,此标志将作为道具传递到Home
您可以看到一个基本示例
如果您需要更高级的状态管理解决方案,您可以查看谢谢。我最终将标题和所有网站内容组合在一起,但我也可以看到添加父项(如您的示例中所示)的方法也会起到作用。