How can I render inline JavaScript with Jade / Pug?
node.jsExpressPugnode.js Problem Overview
I'm trying to get JavaScript to render on my page using Jade (http://jade-lang.com/)
My project is in NodeJS with Express, eveything is working correctly until I want to write some inline JavaScript in the head. Even taking the examples from the Jade docs I can't get it to work what am I missing?
Jade template
!!! 5
html(lang="en")
head
title "Test"
script(type='text/javascript')
if (10 == 10) {
alert("working")
}
body
Resulting rendered HTML in browser
<!DOCTYPE html>
<html lang="en">
<head>
<title>"Test"</title>
<script type="text/javascript">
<if>(10 == 10) {<alert working></alert></if>}
</script>
</head>
<body>
</body>
</html>
Somethings definitely a miss here any ideas?
node.js Solutions
Solution 1 - node.js
simply use a 'script' tag with a dot after.
script.
var users = !{JSON.stringify(users).replace(/<\//g, "<\\/")}
https://github.com/pugjs/pug/blob/master/packages/pug/examples/dynamicscript.pug
Solution 2 - node.js
The :javascript filter was removed in version 7.0
The docs says you should use a script tag now, followed by a . char and no preceding space.
Example:
script.
if (usingJade)
console.log('you are awesome')
else
console.log('use jade')
will be compiled to
<script>
if (usingJade)
console.log('you are awesome')
else
console.log('use jade')
</script>
Solution 3 - node.js
Use script tag with the type specified, simply include it before the dot:
script(type="text/javascript").
if (10 == 10) {
alert("working");
}
This will compile to:
<script type="text/javascript">
if (10 == 10) {
alert("working");
}
</script>
Solution 4 - node.js
No use script tag only.
Solution with |:
script
| if (10 == 10) {
| alert("working")
| }
Or with a .:
script.
if (10 == 10) {
alert("working")
}
Solution 5 - node.js
THIRD VERSION OF MY ANSWER:
Here's a multiple line example of inline Jade Javascript. I don't think you can write it without using a -. This is a flash message example that I use in a partial. Hope this helps!
-if(typeof(info) !== 'undefined')
-if (info)
- if(info.length){
ul
-info.forEach(function(info){
li= info
-})
-}
Is the code you're trying to get to compile the code in your question?
If so, you don't need two things: first, you don't need to declare that it's Javascript/a script, you can just started coding after typing -; second, after you type -if you don't need to type the { or } either. That's what makes Jade pretty sweet.
--------------ORIGINAL ANSWER BELOW ---------------
Try prepending if with -:
-if(10 == 10)
//do whatever you want here as long as it's indented two spaces from
the `-` above
There are also tons of Jade examples at:
Solution 6 - node.js
For multi-line content jade normally uses a "|", however:
> Tags that accept only text such as > script, style, and textarea do not > need the leading | character
This said, i cannot reproduce the problem you are having. When i paste that code in a jade template, it produces the right output and prompts me with an alert on page-load.
Solution 7 - node.js
script(nonce="some-nonce").
console.log("test");
//- Workaround
<script nonce="some-nonce">console.log("test");</script>
Solution 8 - node.js
Use the :javascript filter. This will generate a script tag and escape the script contents as CDATA:
!!! 5
html(lang="en")
head
title "Test"
:javascript
if (10 == 10) {
alert("working")
}
body