When using Express for Node.js, I noticed that it outputs the HTML code without any newline characters or tabs. Though it may be more efficient to download, it's not very readable during development.
How can I get Express to output nicely formatted HTML?
In your main app.js or what is in it's place:
Express 4.x
if (app.get('env') === 'development') {
app.locals.pretty = true;
}
Express 3.x
app.configure('development', function(){
app.use(express.errorHandler());
app.locals.pretty = true;
});
Express 2.x
app.configure('development', function(){
app.use(express.errorHandler());
app.set('view options', { pretty: true });
});
I put the pretty print in development because you'll want more efficiency with the 'ugly' in production. Make sure to set environment variable NODE_ENV=production when you're deploying in production. This can be done with an sh script you use in the 'script' field of package.json and executed to start.
Express 3 changed this because:
The "view options" setting is no longer necessary, app.locals are the local variables merged with res.render()'s, so [app.locals.pretty = true is the same as passing res.render(view, { pretty: true }).
promise, uglify-js, css and lexical-scope before it would run again (it would build, but crash on first request). I only added that one line. –
Moderate app.locals.pretty = true –
Afroasian To "pretty-format" html output in Jade/Express:
app.set('view options', { pretty: true });
There is a "pretty" option in Jade itself:
var jade = require("jade");
var jade_string = [
"!!! 5",
"html",
" body",
" #foo I am a foo div!"
].join("\n");
var fn = jade.compile(jade_string, { pretty: true });
console.log( fn() );
...gets you this:
<!DOCTYPE html>
<html>
<body>
<div id="foo">I am a foo div!
</div>
</body>
</html>
I doesn't seem to be very sophisticated but for what I'm after -- the ability to actually debug the HTML my views produce -- it's just fine.
In express 4.x, add this to your app.js:
if (app.get('env') === 'development') {
app.locals.pretty = true;
}
If you are using the console to compile, then you can use something like this:
$ jade views/ --out html --pretty
In express 4.x, add this to your app.js:
app.locals.pretty = app.get('env') === 'development';
Do you really need nicely formatted html? Even if you try to output something that looks nice in one editor, it can look weird in another. Granted, I don't know what you need the html for, but I'd try using the chrome development tools or firebug for Firefox. Those tools give you a good view of the DOM instead of the html.
If you really-really need nicely formatted html then try using EJS instead of jade. That would mean you'd have to format the html yourself though.
you can use tidy
take for example this jade file:
foo.jade
h1 MyTitle
p
a(class='button', href='/users/') show users
table
thead
tr
th Name
th Email
tbody
- var items = [{name:'Foo',email:'foo@bar'}, {name:'Bar',email:'bar@bar'}]
- each item in items
tr
td= item.name
td= item.email
now you can process it with node testjade.js foo.jade > output.html:
testjade.js
var jade = require('jade');
var jadeFile = process.argv[2];
jade.renderFile(__dirname + '/' + jadeFile, options, function(err, html){
console.log(html);
});
will give you s.th. like:
output.html
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html><head><title>My Title</title><link rel="stylesheet" href="/stylesheets/style.css"/><script type="text/javascript" src="../js/jquery-1.4.4.min.js"></script></head><body><div id="main"><div ><h1>MyTitle</h1><p><a href="/users/" class="button">show users</a></p><table><thead><tr><th>Name</th><th>Email</th></tr></thead><tbody><tr><td>Foo</td><td>foo@bar</td></tr><tr><td>Bar</td><td>bar@bar</td></tr></tbody></table></div></div></body></html
then running it through tidy with tidy -m output.html will result in:
output.html
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta name="generator" content=
"HTML Tidy for Linux (vers 25 March 2009), see www.w3.org" />
<title>My Title</title>
<link rel="stylesheet" href="/stylesheets/style.css" type=
"text/css" />
<script type="text/javascript" src="../js/jquery-1.4.4.min.js">
</script>
</head>
<body>
<div id="main">
<div>
<h1>MyTitle</h1>
<p><a href="/users/" class="button">show users</a></p>
<table>
<thead>
<tr>
<th>Name</th>
<th>Email</th>
</tr>
</thead>
<tbody>
<tr>
<td>Foo</td>
<td>foo@bar</td>
</tr>
<tr>
<td>Bar</td>
<td>bar@bar</td>
</tr>
</tbody>
</table>
</div>
</div>
</body>
</html>
building off of oliver's suggestion, heres a quick and dirty way to view beautified html
1) download tidy
2) add this to your .bashrc
function tidyme() {
curl $1 | tidy -indent -quiet -output tidy.html ; open -a 'google chrome' tidy.html
}
3) run
$ tidyme localhost:3000/path
the open command only works on macs. hope that helps!
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