binding with polymer lit-element 0.6.2 dosn't work
Question
i have update version of polymer lit-element from 0.5.2 to 0.6.2 and the binding dosn't work what I wrong?
this the html:
<html> <head> <script src="node_modules/@webcomponents/webcomponentsjs/webcomponents-bundle.js"></script> <script src="./node_modules/@webcomponents/webcomponentsjs/custom-elements-es5-adapter.js"></script> </head> <body> <my-element feeling="good"></my-element> <script type="module" src="./index.js"></script> </body> </html>
with old version 0.5.2 the code below worked
import {LitElement, html} from '@polymer/lit-element'; class MyElement extends LitElement { static get properties() { return { feeling:{type:String} } } _render({feeling}) { return html ` i feel ${feeling}!`; } } customElements.define('my-element', MyElement);
this with 0.6.2 :
import {LitElement, html} from '@polymer/lit-element'; class MyElement extends LitElement { static get properties() { return { feeling:{type:String} } } render() { return html` now i feel ${this.feeling} !`; } } customElements.define('my-element', MyElement);
I find that in version 0.6.2 is changed the function _render() to render() and for the proprerty if change in this.proprerty ..... but in render this.feeling is undefined....
can help me?
1 answers
solution1
0 2018-12-04 08:06:45
I am not sure what happend, but I delete the white-spaces before html ... tag in render().
Now it works fine. It was IDE that warned me that line must be not running.
render() {
return html` now i feel ${this.feeling} !`;
}
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