short question: Is it possible to use polymer expressions on a normal html site? So that I could write {{ 1+ 1 }} somewhere and it would be evaluated to 2.
If you mean "without including anything of polymer", than the short answer would be "no". Otherwise here is an example for using a polymer expression outside of a polymer element:
<!doctype html>
<html>
<head>
<script src="/components/platform/platform.js"></script>
<link href="/components/polymer/polymer.html" rel="import">
</head>
<body unresolved>
<template is="auto-binding">
1 + 1 is {{1+1}}
</template>
</body>
</html>
Related
I'm new to polymer. Below code is not displaying anything. Just a blank page. I'm running this on the default python server. Any idea why this is happening?
<!DOCTYPE html>
<html>
<head>
<script src="bower_components/webcomponentsjs/webcomponents-lite.js"/>
<link rel="import" href="bower_components/polymer/polymer.html"/>
</head>
<body>
<hello-element></hello-element>
<dom-module id="hello-element">
<template>Hello World</template>
</dom-module>
<script>
HTMLImports.whenReady( function () {
Polymer({
is: "hello-element"
})
})
</script>
</body>
</html
First of all, your closing html tag is malformed. It should be </html> instead of <html. Perhaps you made a mistake while copying, but you should check just in case.
In addition, your script element should have a closing tag, like so:
<script src="bower_components/webcomponentsjs/webcomponents-lite.js"></script>
Furthermore, the link tag should not have this slash / before closing it, like so:
<link rel="import" href="bower_components/polymer/polymer.html">
Try to use HTML tags Properly. In HTML5, so-called void elements (elements that can't have content -> link,meta) don't need the closing, but when comes to tag it must be closing tag. It takes content between takes as javascript code.
<script src="bower_components/webcomponentsjs/webcomponents-lite.js"></script>
Try to use above format to get correct output. But avoid creating componments in Main document. Create in other file and import it
Hello
I'm starting with Polymer 1.0 and I'm trying to create my first element and load into an html page. I'm using Chrome Dev Editor, the project was created correctly because I could load all the example. After that I eliminate all the example code and create a:
Folder "elements" into the project
"hello-world.html" with the following code:
<link rel="import" href="../bower_components/polymer/polymer.html">
<polymer-element name="hello-world" noscript>
<template>
<h1>Hello World</h1>
</template>
Updated the code in the "index.html" file
<!doctype html>
<html>
<head>
<title>PolyExample</title>
<script src="bower_components/webcomponentsjs/webcomponents-lite.min.js"></script>
<link rel="import" href="elements/hello-world.html">
<link rel="stylesheet" href="styles.css">
</head>
<body>
<h1>Test Polymer</h1>
<hello-world></hello-world>
</body>
</html>
I will appreciate any help about this
Thanks in advance
Your code has a serious problem in the way you create your element,
You use a dom-module element to create a new element and you need to write some JS to initialize the element. Below is an example
<link rel="import"
href="bower_components/polymer/polymer.html">
<dom-module id="hello-world">
<template>
<h1>Hello World</h1>
</template>
<script>
Polymer({
is: "hello-world"
});
</script>
</dom-module>
The script tag with that code is essential for your element to work.
This is probably as simple as it gets.
To read more on that follow the link:
https://www.polymer-project.org/1.0/docs/start/quick-tour.html
I'm trying to render a simple Polymer-element. I have followed the docs and it is not rendered. The weird thing is that a more complex polymer tags do work (such as <dom-module id=""> ), but no luck with <polymer-element>.
index.html
<!DOCTYPE html>
<html>
<head>
<script src="bower_components/webcomponentsjs/webcomponents.min.js"></script>
<link rel="import" href="elements/daniel-element.html">
<title>Polymer Learning</title>
</head>
<body>
<daniel-element></daniel-element>
</body>
</html>
daniel-element.html
<link rel="import" href="../bower_components/polymer/polymer.html">
<polymer-element name="fav-color">
<template>
This is <b>{{owner}}</b>'s fav-color element.
{{owner}} likes the color
<span style="color: {{color}}">{{color}}</span>.
</template>
<script>
Polymer({
owner: "Daniel",
color: "red"
});
</script>
</polymer-element>
When I run:
python -m SimpleHTTPServer
OR
polyserve
The browser does not render the element.
I have looked on this subject and did not found a solution.. thanks before.
The <polymer-element> tag was used in older versions of Polymer. With 1.0 you need to use <dom-module id=""> which does work as you have noticed. Have a look at the migration guide to find out more on specifying local DOM in 1.0.
Trying to display hello world using elements but nothing happens any help?
index.html
<!DOCTYPE html>
<html>
<head>
<meta name="viewport"
content="width=device-width, minimum-scale=1.0, initial-scale=1.0, user-scalable=yes">
<script src="bower_components/webcomponentsjs/webcomponents.js"></script>
<link rel="import" href="elements/hello-world.html">
</head>
<body unresolved>
<hello-world></hello-world>
</body>
</html>
hello-world.html
<link rel="import" href="../bower_components/polymer/polymer.html">
<polymer-element name="hello-world" nonscript>
<template>
<h2>Hello World</h2>
</template>
</polymer-element>
Code for "hello-world.html" is now:
<link rel="import" href="../bower_components/polymer/polymer.html">
<dom-module id="hello-world">
<template>
<h1>Hello World</h1>
</template>
<script>
Polymer ({ is: "hello-world", });
</script>
</dom-module>
If you are using polymer version 0.8 or 0.9, then <polymer-element ... should be <dom-module ...
See more from polymer site:
https://www.polymer-project.org/0.9/docs/start/quick-tour.html
You have a typo, nonscript needs to be noscript.
<polymer-element name="hello-world" noscript>
I have the same problem and dont find the mistake.
index.html
<html>
<head>
<title>Polymer-Application</title>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<!--<script src="bower_components/jquery/dist/jquery.min.js"></script>-->
<script src="bower_components/webcomponentsjs/webcomponents.min.js"></script>
<!-- file is available, auto completed by api -->
<link rel="import" href="hello/hello.html">
<!-- file is available, auto completed by api -->
<!-- netbeans doesn't know relation import -->
</head>
<body>
<h1>My first Polymer-Application</h1>
<hello></hello>
</body>
</html>
hello/hello.html
<link rel="import" href="../bower_components/polymer/polymer.html">
<!-- file is available, auto complete by api -->
<polymer-element name="hello" noscript>
<template>
<h1>Hello Polymer world</h1>
</template>
</polymer-element>
My platfrom is:
Win 8.1
nodejs
bower
polymer (installed over bower, folders and files are availible)
git
netbeans dev edition (as editor)
xammp (as apache webserver)
tested with chrome, firefox and ie10 and the custom element is not be shown. i don't think it's a browser problem. it's the simpliest element you can write, but why did it not work?
Edit:
tested it on a clean ubuntu installation. and it still does not work?
i also tested original code from the polymer page and this won't work too.
am i to stupid for copy paste?
Edit 2:
i found it an have running my polymer apps. If i use Polymer 1.0.9 i should not read the tutorial for 0.5.0
changes:
index.html:
<!DOCTYPE html>
<html>
<head>
...
<script scr="bower_components/webcomponents-lite.min.js"></script>
<!-- the lite edition is needet since polymer version 0.8 -->
<link rel="import" href="hello/hello.html">
...
</head>
<body>
<hello></hello>
</body>
</html>
hello/hello.html:
<link rel="import" href="../bower_components/polymer/polymer.html">
<dom-module id="hello">
<!-- its not longer a polymer-element. we have to use dom-module and id and the noscript option is not longer supported -->
<template>
<template>
<script>
// everytime you need to initialize a Polymer object
Polymer({
is: 'hello' // must be set now
});
</script>
</dom-module>
if you want to work with parameters you need to set it in the polymer ready function and every placeholder must be surrounded by a html tag like span without any other content in it.
Replace the line
<script src="bower_components/webcomponentsjs/webcomponents.js"></script>
with
<script src="../bower_components/webcomponentsjs/webcomponents.js"></script>
This should fix the issue.
As far as I can tell from the documentation here and here, the following should be right. But it's not working. I get no errors. My page just says "test test" (You'll see why in the code). What is wrong?
NOTE I had this working fine with core-ajax directly in a single blog entry, so I know my data is fine, etc
slog-entry.html this is the element for each entry in my demo blog app
<link rel="import" href="../polymer/polymer.html">
<link href="../core-ajax/core-ajax.html" rel="import">
<polymer-element name="slog-entry" noscript>
<template>
<h1>{{entry.Title}}</h1>
<p>{{entry.Text}}</p>
<span>{{entry.timestamp}}</span>
</template>
</polymer-element>
slog-entries.html this is the element for the collection of entries in my blog app
<link rel="import" href="../polymer/polymer.html">
<link href="../slog-entry/slog-entry.html" rel="import">
<polymer-element name="slog-entries" noscript>
<template>
<core-ajax auto
url="https://<server>/entries.json"
response="{{entries}}">
</core-ajax>
test
<template repeat="{{entry in entries}}">
<slog-entry bind="{{entry}}"></slog-entry>
</template>
</template>
</polymer-element>
slog.html this is the index
<!DOCTYPE html>
<html>
<head lang="en">
<meta charset="UTF-8">
<title>Status Log 0.1b</title>
<script src="templates/platform/platform.js"></script>
<link href="templates/slog-entries/slog-entries.html" rel="import">
<link href="templates/polymer/polymer.html" rel="import">
</head>
<body>
test
<slog-entries></slog-entries>
</body>
</html>
UPDATE Here is what the DOM looks like:
Your syntax bind="{{entry}}" doesn't do what I suspect you want it to do.
Polymer binding uses a syntax like this <name of thing to bind to>="{{<source value>}}".
Now, in order to have a name of thing to bind to, elements must publish those names.
So, slog-entry has to look like this:
<polymer-element name="slog-entry" attributes="entry" noscript>
The attributes="entry" bit on the element causes slog-entry to accept bindings to property entry (this is what we call publishing).
Now your repeat can look like this:
<template repeat="{{entry in entries}}">
<slog-entry entry="{{entry}}"></slog-entry>
</template>
We are telling the system to bind the entry property of each slog-entry to the entry value at each repeat.