How to have a dynamic value in an HTML comment in Jade?

问题

I want to programatically set the content of a comment. But this doesn't work:

p Hello
// = 'Generated at ' + date

It just outputs this:

<p>Hello</p>
<!-- = 'Generated at ' + date -->

How can I output a comment with something dynamic in it? I can't see anything in the docs about this.

回答1:

Unfortunately for you in this case, Jade does not evaluate the comment's value. You can hack around this by doing:

!='<!-- Generated at ' + date + '-->'

来源：https://stackoverflow.com/questions/23829920/how-to-have-a-dynamic-value-in-an-html-comment-in-jade