有条件地包含在Jade + Express中 [英] Conditional Include in Jade + Express

问题描述

如果在玉中对"include"使用-else语句，该怎么用?

How can one use if -else statement on "include" in jade??

例如，如果我有两个单独的导航栏模板navbar.jade和navbar_notloggedin.jade

For example, if I have two separate navigation bar templates navbar.jade and navbar_notloggedin.jade

我想这样做:

input(type='hidden', value= user.user)#username

- if(user.user!="")
  include navbar
- else if(user.user=="")
  include navbar_notloggedin 

推荐答案

您可以使用

-if (user.user)
 include navbar
-else
 include navbar_notloggedin 

if语句将检查是否定义了变量，而不是是否为空字符串.但是，我假设您没有为用户存储空字符串值.

The if statement will check whether the variable is defined or not, not whether it is an empty string or not. However, I assume you are not storing empty string values for user.

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