[英]Change Bootstrap class depending of component state in React
我有一個名為 NavBar 的反應組件。 它從另一個組件 (App.js) 獲取一個變量,該變量指定頁面是否處於暗模式。 該變量稱為“pageMode”。 我想根據“pageMode”變量的值將 navBar 的類從 navbar-light 更改為 navbar-dark。
這是代碼
import React from 'react';
class NavBar extends React.Component{
render(){
if(this.props.pageMode === "dark"){
//Here I want to do something to render the component using navbar-dark class
}
else{
//Render using navbar-light class
}
return <nav className="navbar navbar-expand-lg [navbar-light] bg-light">
<a className="navbar-brand NavBar-title-fix" href="#">Inicio</a>
<button className="navbar-toggler" type="button" data-toggle="collapse" data-
target="#navbarSupportedContent" aria-controls="navbarSupportedContent" aria-
expanded="false" aria-label="Toggle navigation">
<span className="navbar-toggler-icon"></span>
</button>
<div className="collapse navbar-collapse" id="navbarSupportedContent">
<ul className="navbar-nav mr-auto">
<li className="nav-item active">
<a className="nav-link" href="#">Proyectos</a>
</li>
<li className="nav-item">
<a className="nav-link" href="#">Sobre mi</a>
</li>
</ul>
</div>
</nav>
}
}
export default NavBar;
在渲染返回狀態中,[] 之間的類是我想要根據變量值更改的類。
謝謝閱讀!
import React from 'react';
class NavBar extends React.Component{
render(){
const themeClass = {
dark: '[navbar-dark]',
light: '[navbar-light]'
}[this.props.pageMode]
return <nav className={`navbar navbar-expand-lg ${themeClass} bg-light`}>
<a className="navbar-brand NavBar-title-fix" href="#">Inicio</a>
<button className="navbar-toggler" type="button" data-toggle="collapse" data-
target="#navbarSupportedContent" aria-controls="navbarSupportedContent" aria-
expanded="false" aria-label="Toggle navigation">
<span className="navbar-toggler-icon"></span>
</button>
<div className="collapse navbar-collapse" id="navbarSupportedContent">
<ul className="navbar-nav mr-auto">
<li className="nav-item active">
<a className="nav-link" href="#">Proyectos</a>
</li>
<li className="nav-item">
<a className="nav-link" href="#">Sobre mi</a>
</li>
</ul>
</div>
</nav>
}
}
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