我有一个Play / scala / sbt项目,其中包含以下app/assets/javascripts/nav.jsx
保存的React组件:
class Nav extends React.Component {
constructor() {
super();
}
render() {
return (
<nav class="navbar navbar-default">
<div class="container-fluid">
<div class="navbar-header">
<a class="navbar-brand" href="@routes.MainViewController.index" id="logo">@Messages("application.banner")</a>
</div>
<div class="collapse navbar-collapse">
<ul class="nav navbar-nav">
<li class="active"><a href="@routes.MainViewController.index">@Messages("application.home")</a></li>
<li><a href="@routes.MainViewController.about">@Messages("application.about")</a></li>
<li><a href="#">Test</a></li>
<li><a href="#">Test</a></li>
</ul>
</div>
</div>
</nav>
);
}
}
ReactDOM.render(
<Nav />,
document.getElementById('nav')
);
在我的main.scala.html
文件中:
@(title: String)(body: Html)(webJarAssets: WebJarAssets)(implicit messages: Messages)
<!DOCTYPE html>
<html lang="en">
<head>
@* Here's where we render the page title `String`. *@
<title>@title</title>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<script src="@routes.MainJsonController.javascriptRoutes" type="text/javascript"></script>
<link rel="stylesheet" href='@routes.WebJarAssets.at(webJarAssets.locate("css/bootstrap.min.css"))'>
<link rel="stylesheet" href='@routes.WebJarAssets.at(webJarAssets.locate("css/bootstrap-theme.min.css"))'>
<link rel="stylesheet" href='@routes.WebJarAssets.at(webJarAssets.locate("css/font-awesome.min.css"))'>
<script type='text/javascript' src='@routes.WebJarAssets.at(webJarAssets.locate("jquery.min.js"))'></script>
<script type='text/javascript' src='@routes.WebJarAssets.at(webJarAssets.locate("js/bootstrap.min.js"))'></script>
<script type="text/javascript" src='@routes.WebJarAssets.at(webJarAssets.locate("react.js"))'></script>
<script type='text/javascript' src='@routes.WebJarAssets.at(webJarAssets.locate("react-bootstrap.min.js"))'></script>
<script type="text/javascript" src='@routes.WebJarAssets.at(webJarAssets.locate("react-dom.js"))'></script>
</head>
<body>
<div class="container">
<div id="nav"></div>
<div class="container-fluid">
<div class="row">
<div class="col-md-10">
@body
</div>
</div>
</div>
</div>
</body>
</html>
所以,我的导航栏没有出现。我期待Component在<div id="nav"></div>
呈现。我能做错什么?
资产路线
GET /assets/*file controllers.Assets.versioned(path="/public", file: Asset)
我觉得我需要将该组件包含为脚本:
<script type="text/javascript" src='@routes.Assets.versioned("/javascripts/nav.jsx")'></script>
这会使整个页面没有编译错误,但仍然没有出现Component。
我在第7行收到异常,其中第一个<nav>
标记开始。
Uncaught SyntaxError: Unexpected token <
当我更正包含到<script type="text/javascript" src='@routes.Assets.versioned("javascripts/nav.js")'></script>
并将其放在我的结束</body>
标记下方时,我现在知道了:
Uncaught Error: _registerComponent(...): Target container is not a DOM element.
at invariant (react.js:18354)
at Object._registerComponent (react.js:11047)
at Object._renderNewRootComponent (react.js:11070)
at Object.wrapper [as _renderNewRootComponent] (react.js:12353)
at Object._renderSubtreeIntoContainer (react.js:11150)
at Object.render (react.js:11170)
at Object.wrapper [as render] (react.js:12353)
at nav.js:25
答案 0 :(得分:0)
我做了以下更改:
/javascripts
而不是javascripts
.jsx
.js
<head>
结果:
<script type="text/javascript" src='@routes.Assets.versioned("/javascripts/nav.js")'></script>
最后,我的导航栏正确呈现。