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finding-shadow-dom-elements.html
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finding-shadow-dom-elements.html
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<!--
Copyright (c) 2014 The Polymer Project Authors. All rights reserved.
This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
Code distributed by Google as part of the polymer project is also
subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
-->
<!--
# Finding Shadow DOM elements
Shows how to find elements inside the Shadow DOM.
You can find nodes in a Polymer element's Shadow DOM that are tagged with an
`id` attribute using `this.$.<id>` syntax:
findNodes: function() {
this.$.myDiv ... ;
}
The Polymer documentation refers to this as **automatic node finding**.
Once you've located a Shadow DOM node, you can query for child nodes:
findNodes: function() {
this.$.myDiv.querySelector('p') ... ;
}
Read the
[official documentation for automatic node binding](http://www.polymer-project.org/docs/polymer/polymer.html#automatic-node-finding).
[jsbin](http://jsbin.com/hofatu/edit)
-->
<link rel="import" href="../../components/polymer/polymer.html">
<polymer-element name="my-element">
<template>
<div id="myDiv">
<p>Old content</p>
<button on-tap="{{findNodes}}">Find nodes</button>
</div>
</template>
<script>
Polymer({
findNodes: function() {
this.$.myDiv.querySelector('p').textContent = 'New content';
}
});
</script>
</polymer-element>