29 lines
543 B
JavaScript
29 lines
543 B
JavaScript
// @ts-check
|
|
|
|
export class WebComponent extends HTMLElement {
|
|
get template() {
|
|
return "";
|
|
}
|
|
|
|
/**
|
|
* triggered when an attribute value changed
|
|
*/
|
|
onChanges({ previousValue, currentValue }) {}
|
|
|
|
connectedCallback() {
|
|
this.render();
|
|
}
|
|
|
|
attributeChangedCallback(property, previousValue, currentValue) {
|
|
if (previousValue !== currentValue) {
|
|
this[property] = currentValue;
|
|
this.render();
|
|
}
|
|
|
|
this.onChanges({previousValue, currentValue});
|
|
}
|
|
|
|
render() {
|
|
this.innerHTML = this.template;
|
|
}
|
|
}
|