In the last example we created a simple custom component.
Within the dom-module
, we can include a style
element. This will style the DOM in the custom component -- nothing outside the custom component.
Take this example:
<dom-module id="an-ele">
...
<style>
div {
background-color: red
}
</style>
<template>
<div>
Sup
</div>
</template>
...
</dom-module>
The div
in an-ele
will be given a red background. But any div outside the custom component will remain unstyled. For example, in index.html:
<an-ele></an-ele>
<div>hiya</div>
The 'hiya' div will not be given a red background, but the div within the an-ele
component will do.
Notes:
Full source: index.html
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<script src="bower_components/webcomponentsjs/webcomponents-lite.min.js"></script>
<link rel="import" href="bower_components/polymer/polymer.html">
<link rel="import" href="an-ele.html">
</head>
<body>
<an-ele></an-ele>
<div>hiya</div>
</body>
</html>
Full source: an-ele.html
<link rel="import" href="bower_components/polymer/polymer.html">
<dom-module id="an-ele">
<style>
div {
background-color: red
}
</style>
<template>
<div>
Sup
</div>
</template>
<script>
Polymer({
is: "an-ele"
});
</script>
</dom-module>