Ask for globals

[Pedro Nicolás Cuadra Guamán]

Hello again Polymer, team. I'm looking for a way to make globals, is to say, variables or functions, because I dont want to make a huge web component that contains theese globals.

[Karl Tiedt]

It's just JavaScript... No special consideration required if you feel you must use globals.

On Feb 14, 2016 12:03, "Pedro Nicolás Cuadra Guamán" <pedrx...@gmail.com> wrote:

Hello again Polymer, team. I'm looking for a way to make globals, is to say, variables or functions, because I dont want to make a huge web component that contains theese globals.

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[Eric Bidelman]

Also, web components might not be a good fit for your use case. As Karl said, there's nothing wrong with vanilla JS to define functions / globals.

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[Pedro Nicolás Cuadra Guamán]

Sorry i'm not expert with Polymer, but, How can I manipulate an "on-change" event external to the web component in JS? any link? I would appreciate you so much

[Pedro Nicolás Cuadra Guamán]

PD: I want to control a <paper-radio-group>

[Pedro Nicolás Cuadra Guamán]

Don't worry, I solved the problem using jQuery:

$("<paper-radio-group>").on("paper-radio-group-changed",function(){

   //...

})

Greetings from Chile

[Eric Bidelman]

Exactly. You can listen to the event using addEventListener and other methods. They're just DOM events :)

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[Justin Fagnani]

On Sun, Feb 14, 2016 at 3:08 PM, Pedro Nicolás Cuadra Guamán <pedrx...@gmail.com> wrote:

Don't worry, I solved the problem using jQuery:

$("<paper-radio-group>").on("paper-radio-group-changed",function(){

   //...

})

You shouldn't need jQuery, with Polymer or just with plain JS. In fact, jQquery is dangerous because it doesn't know about the Shady DOM scoping and will select elements across shadow boundaries.

In a Polymer element, this.$$(s) is an alias for this.root.querySelector(s), so to add an event handler just do:

this.$$('paper-radio-group').addEventListener('paper-radio-group-changed', () => { ... });

This query is scoped to the element both in native shadow DOM and in ShadyDOM.

If you want a document-level handlers, you can just use standard DOM APIs:

document.querySelector('paper-radio-group').addEventListener('paper-radio-group-changed', () => { ... });

Note that under shady DOM that query won't be scoped to just the document's light-dom, but will select the first paper-radio-group, even in a shadow. Same with jQuery. I'd use that pattern with great caution, or better not at all.

Cheers,

  Justin

 

Greetings from Chile

2016-02-14 18:48 GMT-03:00 Pedro Nicolás Cuadra Guamán <pedrx...@gmail.com>:

PD: I want to control a <paper-radio-group>

2016-02-14 18:47 GMT-03:00 Pedro Nicolás Cuadra Guamán <pedrx...@gmail.com>:

Sorry i'm not expert with Polymer, but, How can I manipulate an "on-change" event external to the web component in JS? any link? I would appreciate you so much

Follow Polymer on Google+: plus.google.com/107187849809354688692
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