demarches-normaliennes/app/javascript/controllers/format_controller.ts

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import { ApplicationController } from './application_controller';
export class FormatController extends ApplicationController {
connect() {
const format = this.element.getAttribute('data-format');
switch (format) {
case 'list':
this.on('change', (event) => {
const target = event.target as HTMLInputElement;
target.value = this.formatList(target.value);
});
break;
case 'iban':
this.on('input', (event) => {
const target = event.target as HTMLInputElement;
target.value = this.formatIBAN(target.value);
});
}
}
private formatList(value: string) {
return value.replace(/;/g, ',');
}
private formatIBAN(value: string) {
return value
.replace(/[^\dA-Z]/g, '')
.replace(/(.{4})/g, '$1 ')
.trim();
}
}