将多级JSON菜单转换为多级JSX/HTML菜单 [英] Converting a multi-level JSON menu to a multi-level JSX/HTML menu
问题描述
我正在使用 SmartMenus 创建下拉菜单.但是，我想动态创建菜单. React应用程序将向API服务器查询JSON代码，并从中构建一个菜单.我正在尝试找出一种将JSON代码转换为HTML/JSX代码的方法:
I am using SmartMenus to create a drop down menu. However, I am wanting to create the menu dynamically. The React app will query the API server for JSON code and a menu will be constructed out of that. I am trying to figure out a way to convert the JSON code to HTML/JSX code:
从API检索到的JSON代码如下所示:
The JSON code retrieved from the API will look something like this:
{
"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:
Based on this JSON data, I would like to generate the following HTML/JSX code:
<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>
以下链接提供了一种解决方案:旋转嵌套将JSON转换为使用Javascript的HTML嵌套列表.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.
The following link offers a solution: Turning nested JSON into an HTML nested list with Javascript . However, this does not seem to work well with JSX as you cannot use document.createElement() with React/JSX elements.
鉴于我正在使用多个级别的菜单，在React中混合使用JSX和html元素的一种有效方法是什么?
Given that I am using multiple levels of menus, what is an efficient way to do this in React with a mix of JSX and html elements?
推荐答案
这是使用JSX和示例数据动态生成的菜单.
Here's a dynamically generated menu, using JSX and your sample data.
如您所见，我们在构建JSX时递归地遍历了您的菜单项:
As you can see, we're recursively iterating over your menu items while building the JSX:
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>
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