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31<html lang="zh-CN"><head><meta charSet="UTF-8"/><meta content="text/html; charset=utf-8" http-equiv="Content-Type"/><meta http-equiv="X-UA-Compatible" content="IE=edge"/><meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1"/><meta name="apple-mobile-web-app-capable" content="yes"/><meta name="apple-mobile-web-app-status-bar-style" content="black"/><link rel="apple-touch-icon" sizes="180x180" href="../ydoc/images/apple-touch-icon.png"/><link rel="icon" type="image/png" sizes="32x32" href="../ydoc/images/favicon-32x32.png"/><link rel="icon" type="image/png" sizes="16x16" href="../ydoc/images/favicon-16x16.png"/><link rel="manifest" href="../ydoc/images/manifest.json"/><link rel="mask-icon" href="../ydoc/images/safari-pinned-tab.svg"" color="#5bbad5"/><meta name="theme-color" content="#ffffff"/><meta http-equiv="Cache-Control" content="no-transform"/><meta http-equiv="Cache-Control" content="no-siteapp"/><title>常见问题-文档</title><link rel="stylesheet" href="../ydoc/styles/style.css"/><meta name="author" content="司徒正美"/><meta name="keywords"/><meta name="description" content="使用Reac微信小程序"/><meta id="releativePath" content=".."/><link rel="stylesheet" href="../ydoc/ydoc-plugin-search/search.css"/></head><body><div class="g-doc"><div class="m-aside"><div class="m-summary" id="js-menu"><div class="m-summary-content" id="js-menu-content"><div class="m-summary-block"><ul class="m-summary-list"><li class="item"><a href="intro.html#" class="href">介绍</a></li><li class="item"><a href="install.html" class="href">安装</a></li><li class="item"><a href="app.html" class="href">应用组件</a></li><li class="item"><a href="page.html" class="href">页面组件</a></li><li class="item"><a href="component.html" class="href">通用组件</a></li><li class="item"><a href="jsx.html" class="href">模板系统</a></li><li class="item"><a href="event.html" class="href">事件系统</a></li><li class="item"><a href="api.html" class="href">API</a></li><li class="item"><a href="router.html" class="href">路由</a></li><li class="item"><a href="" class="href">常见问题</a></li><li class="item"><a href="about.html" class="href">关于</a></li></ul></div></div></div><div class="m-summary-switch" id="js-summary-switch"><svg viewBox="0 0 926.23699 573.74994" version="1.1" x="0px" y="0px" width="15" height="15" class="bottom"><g transform="translate(904.92214,-879.1482)"><path d="m -673.67664,1221.6502 -231.2455,-231.24803 55.6165,-55.627 c 30.5891,-30.59485 56.1806,-55.627 56.8701,-55.627 0.6894,0 79.8637,78.60862 175.9427,174.68583 l 174.6892,174.6858 174.6892,-174.6858 c 96.079,-96.07721 175.253196,-174.68583 175.942696,-174.68583 0.6895,0 26.281,25.03215 56.8701,55.627 l 55.6165,55.627 -231.245496,231.24803 c -127.185,127.1864-231.5279,231.248 -231.873,231.248 -0.3451,0 -104.688,-104.0616 -231.873,-231.248 z" fill="#fff"></path></g></svg><svg viewBox="0 0 926.23699 573.74994" version="1.1" x="0px" y="0px" width="15" height="15" class="top"><g id="Page-1" stroke="none" stroke-width="1" fill="none" fill-rule="evenodd"><g id="aaa" fill="#fff" fill-rule="nonzero"><path d="M231.2455,342.502 L0,111.25397 L55.6165,55.62697 C86.2056,25.03212 111.7971,-2.99999998e-05 112.4866,-2.99999998e-05 C113.176,-2.99999998e-05 192.3503,78.60859 288.4293,174.6858 L463.1185,349.3716 L637.8077,174.6858 C733.8867,78.60859 813.060896,-2.99999997e-05 813.750396,-2.99999997e-05 C814.439896,-2.99999997e-05 840.031396,25.03212 870.620496,55.62697 L926.236996,111.25397 L694.9915,342.502 C567.8065,469.6884 463.4636,573.75 463.1185,573.75 C462.7734,573.75 358.4305,469.6884 231.2455,342.502 Z" id="Shape" transform="translate(463.118498, 286.874985) scale(1, -1) translate(-463.118498, -286.874985) "></path></g></g></svg></div></div><div class="m-main" id="js-panel"><header class="m-header" id="js-header"><div class="m-header-title js-logo"><a href="../index.html" target="_self"><img class="logo" width="36" src="../ydoc/images/dog@1x.png"/><h6 class="name">nanachi</h6></a></div><div><div class="m-search">
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<ul>
<li>暂时不支持 redux,请使用 <code>React.getApp().globalData</code> 来在页面间交换数据</li>
<li>render 里面不能定义变量,即不能出现 <code>var</code>, <code>const</code>, <code>let</code> 语句。<code>render()</code> 里只能使用 JSX 来描述结构，不能使用 <code>React.createElement()</code>。</li>
<li>组件必须定义在 <code>components</code> 中</li>
<li>页面引用了组件了，如果组件有样式，那么页面的样式表也要 <code>import</code> 这个组件的样式表</li>
<li>为什么底部不出现 TabBar？ 这是小程序自身的 BUG，详见<a href="https://www.cnblogs.com/bellagao/p/6291880.html">这里</a></li>
<li>路由跳转时，如何拿到当前路径与参数，原来是通过 <code>onLoad</code> 方法拿，现在你可以通过任何一个页面组件的生命周期钩子，访问 <code>this.props</code>，里面就有 <code>path</code> 与 <code>query</code> 属性</li>
<li>静态资源统一放到 <code>src</code> 目录下的 <code>assets</code> 目录下</li>
<li><code>wxml</code> 模板部分，如果使用了箭头函数，那么它里面不能出现 <code>this</code> 关键字</li>
<li>不要在 <code>props</code>, <code>state</code>, <code>context</code> 里面放 JSX，因为 JSX 的结构容易出现环引用，导到微信小程序内部的 JSON.stringify 出错</li>
<li><code>slot</code> 机制与 render props 是有代价，它们会在 <code>components/Fragments</code> 目下添加许多当作桥梁用的碎片文件，不要滥用</li>
<li>render props 机制只能用于有狀态组件，并且只应用于 <code>render()</code> 属性，只能传一个参数，参数只能是 <code>this.state</code> 或 <code>this.props</code></li>
</ul>
<p>更多问题请到 GitHub 提 <a href="https://github.com/roland-reed/nanachi-cli/issues">Issue</a>。</p>
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