我正在使用 SmartMenus创建下拉菜单。但是，我想动态创建菜单。 React 应用程序将查询 API 服务器以获取 JSON 代码，并由此构建一个菜单。我正在尝试找出一种将 JSON 代码转换为 HTML/JSX 代码的方法:
从 API 检索到的 JSON 代码看起来像这样:
{
"module_type": "menu",
"title": "My Site",
"menu": [
{
"link": "/home",
"title": "Home"
},
{
"link": "#",
"title": "Fruit",
"menu": [
{
"link": "/apples",
"title": "Apples"
},
{
"link": "/bananas",
"title": "Bananas"
},
{
"link": "/kiwi",
"title": "Kiwi"
},
{
"link": "/pears",
"title": "Pears"
}
]
},
{
"link": "#",
"title": "Vegetables",
"menu": [
{
"link": "/carrots",
"title": "Carrots"
},
{
"link": "/celery",
"title": "Celery"
},
{
"link": "/potatoes",
"title": "Potatoes"
},
{
"link": "#",
"title": "More",
"menu": [
{
"link": "/thirdlevel1",
"title": "3rd level menu"
},
{
"link": "/thirdlevel2",
"title": "3rd level two"
}
]
}
]
},
{
"link": "/about",
"title": "About"
},
{
"link": "/contact",
"title": "Contact"
}
]
}
基于此 JSON 数据，我想生成以下 HTML/JSX 代码:
<nav className="main-nav" role="navigation">
<input id="main-menu-state" type="checkbox" />
<label className="main-menu-btn" htmlFor="main-menu-state">
<span className="main-menu-btn-icon"></span> Toggle main menu visibility
</label>
<h2 className="nav-brand"><a href="#">My Site</a></h2>
<ul id="main-menu" className="sm sm-blue">
<li className="nav-item"><Link to="/">Home</Link></li>
<li><a href="#">No Fruit</a>
<ul>
<li><Link to="/apples">Apples</Link></li>
<li><Link to="/bananas">Bananas</Link></li>
<li><Link to="/kiwi">Kiwi</Link></li>
<li><Link to="/pears">Pears</Link></li>
</ul>
</li>
<li><a href="#">Vegetables</a>
<ul>
<li className="nav-item"><Link to="/carrots">Carrots</Link></li>
<li className="nav-item"><Link to="/celery">Celery</Link></li>
<li className="nav-item"><Link to="/potatoes">Potatoes</Link></li>
<li><a href="#">more...</a>
<ul>
<li><a href="#>3rd level menu</a></li>
<li><a href="#>3rd level two</a></li>
</ul>
</li>
</ul>
</li>
<li className="nav-item"><Link to="/about">About</Link></li>
<li className="nav-item"><Link to="/contact">Contact</Link></li>
</ul>
</nav>
以下链接提供了解决方案:Turning nested JSON into an HTML nested list with Javascript .但是，这似乎不适用于 JSX，因为您不能将 document.createElement() 与 React/JSX 元素一起使用。
鉴于我正在使用多级菜单，在 React 中混合使用 JSX 和 html 元素的有效方法是什么？
最佳答案
这是一个动态生成的菜单，使用 JSX 和您的示例数据。
如您所见，我们在构建 JSX 时递归地迭代您的菜单项:
const renderMenu = items => {
return <ul>
{ items.map(i => {
return <li>
<a href={i.link}>{ i.title }</a>
{ i.menu && renderMenu(i.menu) }
</li>
})}
</ul>
}
const Menu = ({ data }) => {
return <nav>
<h2>{ data.title }</h2>
{ renderMenu(data.menu) }
</nav>
}
ReactDOM.render(
<Menu data={data} />,
document.getElementById('container')
);<script src="https://cdnjs.cloudflare.com/ajax/libs/react/15.1.0/react.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/react/15.1.0/react-dom.min.js"></script>
<script>
// The sample data is declared here, only to keep the React example short and clear
const data = {
"module_type": "menu",
"title": "My Site",
"menu": [{
"link": "/home",
"title": "Home"
},
{
"link": "#",
"title": "Fruit",
"menu": [{
"link": "/apples",
"title": "Apples"
},
{
"link": "/bananas",
"title": "Bananas"
},
{
"link": "/kiwi",
"title": "Kiwi"
},
{
"link": "/pears",
"title": "Pears"
}
]
},
{
"link": "#",
"title": "Vegetables",
"menu": [{
"link": "/carrots",
"title": "Carrots"
},
{
"link": "/celery",
"title": "Celery"
},
{
"link": "/potatoes",
"title": "Potatoes"
},
{
"link": "#",
"title": "More",
"menu": [{
"link": "/thirdlevel1",
"title": "3rd level menu"
},
{
"link": "/thirdlevel2",
"title": "3rd level two"
}
]
}
]
},
{
"link": "/about",
"title": "About"
},
{
"link": "/contact",
"title": "Contact"
}
]
}
</script>
<div id="container"></div>关于javascript - 将多级 JSON 菜单转换为多级 JSX/HTML 菜单，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/52349417/