is there a way to add CSS/JS later using EJS with nodejs/express
i'm using the EJS template engine with nodejs/express and i'm wondering if it's possible to add another css or js file in e.g the index.ejs (not the layout.ejs)
layout.ejs
<!DOCTYPE html>
<html>
<head>
<title><%= title %></title>
<link rel='stylesheet' href='/stylesheets/style.css' />
<link rel='stylesheet' href='/stylesheets/smoothness/jquery-ui-1.8.14.custom.css' />
</head>
<body>
<%- body %>
</body>
</html>
index.ejs
<h1><%= title %></h1>
<p>Welcome to <%= title %></p>
i don't want to add the second css file in every template开发者_JAVA技巧 but only the index.ejs - is there any way i can do that?
found a solution here: Node.js with Express: Importing client-side javascript using script tags in Jade views?
it's using jade instead of EJS but works all the same. here are some code-snippets for express 2.4.0.
you have to add the following "helpers" to your app.js
app.helpers({
renderScriptsTags: function (all) {
if (all != undefined) {
return all.map(function(script) {
return '<script src="/javascripts/' + script + '"></script>';
}).join('\n ');
}
else {
return '';
}
}
});
app.dynamicHelpers({
scripts: function(req, res) {
return ['jquery-1.5.1.min.js'];
}
});
the layout.ejs looks sth like this:
<!DOCTYPE html>
<html>
<head>
<title><%= title %></title>
<link rel='stylesheet' href='/stylesheets/style.css' />
<%- renderScriptsTags(scripts) %>
</head>
<body>
<%- body %>
</body>
</html>
if you don't add any scripts to the scripts-array, only 'jquery-1.5.1.min.js' will be included - if you want to add files to a subpage you can do this like so:
test.ejs
<% scripts.push('jquery-ui-1.8.14.custom.min.js', 'jquery.validate.min.js') %>
<h1><%= title %></h1>
<p>I'm a template with 3 js files in the header</p>
that's it.
As helpers and dynamicHelpers are gone in Express > 3, I rewrote pkyeck code so it works in Express 3.
So in app.js have this instead of the helpers / dynamicHelpers. Leave everything else as is.
app.locals({
scripts: [],
renderScriptsTags: function (all) {
app.locals.scripts = [];
if (all != undefined) {
return all.map(function(script) {
return '<script src="/javascripts/' + script + '"></script>';
}).join('\n ');
}
else {
return '';
}
},
getScripts: function(req, res) {
return scripts;
}
});
In app.js add line:
app.set('views', __dirname + '/views');
app.set('view engine', 'ejs');
app.use(express.static(__dirname + '/public')); // This line.
In layout.ejs:
<!DOCTYPE html>
<html>
<head>
<title>Authentication Example</title>
<link rel="stylesheet" href="/stylesheets/style.css"/>
<script src="/javascripts/jquery.js"></script>
</head>
<body>
<%- body %>
</body>
</html>
In index.ejs or login.ejs:
<h1>Login</h1>
<form method="post" action="/login">
<p>
<label>Username:</label>
<input type="text" name="username">
</p>
<p>
<label>Password:</label>
<input type="text" name="password">
</p>
<p>
<input type="submit" value="Login">
</p>
</form>
<script src="/javascripts/test.js"></script> <!-- Second Script -->
In test.js:
$(document).ready(function() {
try{
alert("Hi!!!");
}catch(e)
{
alert("Error");
}
});
Regards.
Thanks @asprotte for providing this for express 4.x. Did you tested this? Because it does not appears to be working for me. So I have made some changes to your code here are they:
Put this in app.js file
app.locals.scripts = [];
app.locals.addScripts=function (all) {
app.locals.scripts = [];
if (all != undefined) {
app.locals.scripts = all.map(function(script) {
console.log(script);
return "<script src='/js/" + script + "'></script>";
}).join('\n ');
}
};
app.locals.getScripts = function(req, res) {
return app.locals.scripts;
};
then in template file put (I am using ejs template here) :
<% addScripts(['cart.js']) %>
Then in the layout file we need these to append at the bottom of the page get the scripts
<%- getScripts() %>
I have tested it and its working for me. Please correct me if I am wrong.
Thanks,
Thanks for illustrating this option pkyeck!
In express 4.x app.locals is an object. Here's pkyeck's answer rewritten to work in express 4.x:
app.locals.scripts = [];
app.locals.addScripts=function (all) {
app.locals.scripts = [];
if (all != undefined) {
return all.map(function(script) {
return "<script src='/javascripts/" + script + "'></script>";
}).join('\n ');
}
else {
return '';
}
};
app.locals.getScripts = function(req, res) {
return scripts;
};
加载中,请稍侯......
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