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Unified Diff: polymer_1.0.4/bower_components/iron-meta/README.md

Issue 1205703007: Add polymer 1.0 to npm_modules (Closed) Base URL: https://chromium.googlesource.com/infra/third_party/npm_modules.git@master
Patch Set: Renamed folder to 1.0.4 Created 5 years, 6 months ago
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Index: polymer_1.0.4/bower_components/iron-meta/README.md
diff --git a/polymer_1.0.4/bower_components/iron-meta/README.md b/polymer_1.0.4/bower_components/iron-meta/README.md
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index 0000000000000000000000000000000000000000..26e2ddf72da23b6d69ef57537e962f11fa8fa9a4
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+++ b/polymer_1.0.4/bower_components/iron-meta/README.md
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+iron-meta
+=========
+
+`iron-meta` is a generic element you can use for sharing information across the DOM tree.
+It uses [monostate pattern](http://c2.com/cgi/wiki?MonostatePattern) such that any
+instance of iron-meta has access to the shared
+information. You can use `iron-meta` to share whatever you want (or create an extension
+[like x-meta] for enhancements).
+
+The `iron-meta` instances containing your actual data can be loaded in an import,
+or constructed in any way you see fit. The only requirement is that you create them
+before you try to access them.
+
+Examples:
+
+If I create an instance like this:
+
+```html
+<iron-meta key="info" value="foo/bar"></iron-meta>
+```
+
+Note that value="foo/bar" is the metadata I've defined. I could define more
+attributes or use child nodes to define additional metadata.
+
+Now I can access that element (and it's metadata) from any iron-meta instance
+via the byKey method, e.g.
+
+```javascript
+meta.byKey('info').getAttribute('value');
+```
+
+Pure imperative form would be like:
+
+```javascript
+document.createElement('iron-meta').byKey('info').getAttribute('value');
+```
+
+Or, in a Polymer element, you can include a meta in your template:
+
+```html
+<iron-meta id="meta"></iron-meta>
+```
+
+```javascript
+this.$.meta.byKey('info').getAttribute('value');
+```
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