Reactjs 如何使用React使预加载块在N秒后消失
React预加载程序后的代码输出未显示。只有预加载程序不断出现 我已经试过检查脚本,它运行良好Reactjs 如何使用React使预加载块在N秒后消失,reactjs,Reactjs,React预加载程序后的代码输出未显示。只有预加载程序不断出现 我已经试过检查脚本,它运行良好 export default class Nav extends Component { render() { return ( <div> <div id="preloader"> <div> <div className="spinner">
export default class Nav extends Component {
render() {
return (
<div>
<div id="preloader">
<div>
<div className="spinner">
<div className="double-bounce1" />
<div className="double-bounce2" />
</div>
<span>Wait, please...</span>
</div>
</div>
{/* /Preloader */}
{/* Top Search Area Start */}
<div className="top-search-area">
<div className="modal fade" id="searchModal" tabIndex={-1} role="dialog" aria-hidden="true">
<div className="modal-dialog modal-dialog-centered" role="document">
<div className="modal-content">
<div className="modal-body">
{/* Close Button */}
<button type="button" className="btn close-btn" data-dismiss="modal"><i className="fa fa-times" /></button>
{/* Form */}
<form action="index.html" method="post">
<input type="search" name="top-search-bar" className="form-control" placeholder="Type keywords and hit enter..." />
<button type="submit">Search</button>
</form>
{/* Search Button */}
<div className="search-btn"><i className="icon_search" /></div>
</div>
</div>
</div>
</div>
</div>
{/* Top Search Area End */}
{/* Social Share Area Start */}
<div className="razo-social-share-area">
<a href="#" className="facebook"><i className="fa fa-facebook" /></a>
<a href="#" className="twitter"><i className="fa fa-twitter" /></a>
<a href="#" className="pinterest"><i className="fa fa-pinterest" /></a>
<a href="#" className="instagram"><i className="fa fa-instagram" /></a>
<a href="#" className="youtube"><i className="fa fa-youtube-play" /></a>
<a href="#" className="ss-close-btn"><i className="arrow_right" /></a>
</div>
{/* Social Share Area End */}
{/* Header Area Start */}
<header className="header-area">
{/* Main Header Start */}
<div className="main-header-area">
<div className="classy-nav-container breakpoint-off">
<div className="container">
{/* Classy Menu */}
<nav className="classy-navbar justify-content-between" id="razoNav">
{/* Logo */}
<a className="nav-brand" href="index.html"><img src="./img/core-img/logo.png" alt="" /></a>
{/* Navbar Toggler */}
<div className="classy-navbar-toggler">
<span className="navbarToggler"><span /><span /><span /></span>
</div>
{/* Menu */}
<div className="classy-menu">
{/* Menu Close Button */}
<div className="classycloseIcon">
<div className="cross-wrap"><span className="top" /><span className="bottom" /></div>
</div>
{/* Nav Start */}
<div className="classynav">
<ul id="nav">
<li><a href="./index.html">Home</a></li>
<li><a href="#">Pages</a>
<ul className="dropdown">
<li><a href="./index.html">- Home</a></li>
<li><a href="./charts.html">- Charts</a></li>
<li><a href="./single-charts.html">- Charts Details</a></li>
<li><a href="./podcast.html">- Podcast</a></li>
<li><a href="./single-podcast.html">- Podcast Details</a></li>
<li><a href="./show.html">- Show</a></li>
<li><a href="./events.html">- Event</a></li>
<li><a href="./blog.html">- Blog</a></li>
<li><a href="./single-blog.html">- Blog Details</a></li>
<li><a href="#">- Dropdown</a>
<ul className="dropdown">
<li><a href="#">- Dropdown Item</a></li>
<li><a href="#">- Dropdown Item</a></li>
<li><a href="#">- Dropdown Item</a></li>
<li><a href="#">- Dropdown Item</a></li>
</ul>
</li>
</ul>
</li>
导出默认类导航扩展组件{
render(){
返回(
请等一下。。。
{/*/preload*/}
{/*顶部搜索区域开始*/}
{/*关闭按钮*/}
{/*形式*/}
搜索
{/*搜索按钮*/}
{/*顶部搜索区域结束*/}
{/*社交共享区开始*/}
{/*社交共享区结束*/}
{/*头区域开始*/}
{/*主标头开始*/}
{/*经典菜单*/}
{/*徽标*/}
{/*导航栏切换器*/}
{/*菜单*/}
{/*菜单关闭按钮*/}
{/*导航开始*/}
“root”中的App.js如下所示-
import Nav from './Nav';
import Main from './Components/Main'
class App extends Component {
render() {
return (
<div>
<Nav/>
<Main />
</div>
)
}
}
export default App;
从“/Nav”导入导航;
从“./Components/Main”导入Main
类应用程序扩展组件{
render(){
返回(
)
}
}
导出默认应用程序;
导航栏和主页组件应该已经呈现,但没有呈现任何内容,只是预加载显示到无限时间。如果您希望预加载在固定时间后消失,可以使用、和的组合:
导出默认类导航扩展组件{
状态={
预加载:正确
}
componentDidMount(){
//安装部件10秒后关闭预加载
设置超时(
()=>this.setState(()=>({preload:false})),
10000
);
}
render(){
const{preload}=this.state;
返回(
{预加载&&
请等一下。。。
}
{/*/preload*/}
....
}
}
欢迎来到stackoverflow,你能用全部涉及的代码编辑你的答案吗?目前,你的问题中没有要研究的功能代码,人们无法猜测预加载程序是如何消失的。我已经编辑了它。因此,我看到的代码中肯定没有阻止预加载程序显示的内容。你希望它什么时候停止p显示?css也可能有帮助。延迟10秒或soI后,我很想提供帮助,但不清楚它是关于什么的。你正在尝试使用一些NPM库吗?请尝试组织它-首先是你的源代码
export default class Nav extends Component {
state = {
preloading: true
}
componentDidMount() {
// turns preloading off 10 seconds after the component has mounted
setTimeout(
() => this.setState(() => ({ preloading: false })),
10000
);
}
render() {
const { preloading } = this.state;
return (
<div>
{preloading &&
<div id="preloader">
<div>
<div className="spinner">
<div className="double-bounce1" />
<div className="double-bounce2" />
</div>
<span>Wait, please...</span>
</div>
</div>
}
{/* /Preloader */}
....
}
}