我的 EJS 文件中有此代码:
<table>
<% for(var i=0; i < data.length; i++) { %>
<tr>
<td><%= data[i].id %></td>
<td><%= data[i].name %></td>
</tr>
<% } %>
</table>
当我这样评论的时候,
<!-- <table> -->
<!-- <% for(var i=0; i < data.length; i++) { %> -->
<!-- <tr> -->
<!-- <td><%= data[i].id %></td> -->
<!-- <td><%= data[i].name %></td> -->
<!-- </tr> -->
<!-- <% } %> -->
<!-- </table> -->
我在第 2 行仍然有错误。这是错误的堆栈:
ReferenceError: c:\Users\toumi\Desktop\workspaces\eclipse\ToDoList\views\x.ejs:2
1| <!-- <table> -->
>> 2| <!-- <% for(var i=0; i < data.length; i++) { %> -->
3| <!-- <tr> -->
4| <!-- <td><%= data[i].id %></td> -->
5| <!-- <td><%= data[i].name %></td> -->
data is not defined
at eval (eval at <anonymous> (c:\Users\toumi\Desktop\workspaces\eclipse\ToDoList\node_modules\ejs\lib\ejs.js:455:12), <anonymous>:11:25)
at c:\Users\toumi\Desktop\workspaces\eclipse\ToDoList\node_modules\ejs\lib\ejs.js:482:14
at View.exports.renderFile [as engine] (c:\Users\toumi\Desktop\workspaces\eclipse\ToDoList\node_modules\ejs\lib\ejs.js:348:31)
at View.render (c:\Users\toumi\Desktop\workspaces\eclipse\ToDoList\node_modules\express\lib\view.js:93:8)
at EventEmitter.app.render (c:\Users\toumi\Desktop\workspaces\eclipse\ToDoList\node_modules\express\lib\application.js:566:10)
at ServerResponse.res.render (c:\Users\toumi\Desktop\workspaces\eclipse\ToDoList\node_modules\express\lib\response.js:938:7)
at c:\Users\toumi\Desktop\workspaces\eclipse\ToDoList\todoList.js:13:6
at Layer.handle [as handle_request] (c:\Users\toumi\Desktop\workspaces\eclipse\ToDoList\node_modules\express\lib\router\layer.js:82:5)
at next (c:\Users\toumi\Desktop\workspaces\eclipse\ToDoList\node_modules\express\lib\router\route.js:110:13)
at Route.dispatch (c:\Users\toumi\Desktop\workspaces\eclipse\ToDoList\node_modules\express\lib\router\route.js:91:3)
如何评论这段代码?
多行
<% /* */ %>
格式示例。
<% /* %>
<div>
<span>This will not be rendered</span>
<% for(var i=0; i < data.length; i++) { %>
<span>These won't be rendered either.</span>
<% } %>
</div>
<% */ %>
它还说here关于评论,您可以像下面这样评论:
<%# code %>
有两种方法可以做到!
正如EJS文档中提到的:
<%# commented out code %>
<%/* multiple lines commented out code*/%>
例如:
<%# include('includes/head.ejs') %>
</head>
<body>
<%# include('includes/navigation.ejs') %>
<h1>Page Not Found!</h1>
<%- include('includes/end.ejs') %>
我发现这对我很有帮助。它很简单,多行并且不与任何东西冲突。
<%if(false) {%>
<ul>
<% for(var i =1; i <= 10; i++) { %>
<li>
Hello this is iteraiton <%=i %>
</li>
<% }%>
</ul>
<%- include('./meow') %>
<%} %>
这里是注释掉ejs代码的一种方法:
鉴于这行代码:
<label for="<%= user.id %>" style="background-color: <%= user.color %>;">
我这样做了:
<!--label for="<%#= user.id %>" style="background-color: <%#= user.color %>;"-->
或者: 原代码:
<label for= <%=`${user.id}` %> style= <%=`background-color: ${user.color};`%>>
注释掉代码:
<!--label for= <%#=`${user.id}` %> style= <%#=`background-color: ${user.color};`%> -->