"use strict"; const dropDownSensor = document.querySelector("#drop-down--sensor"); const selectSensorFromDropDownList = function () { const selectedSensor = dropDownSensor.options[dropDownSensor.selectedIndex].value; switch (selectedSensor) { case "none": break; case "vorlauf": console.log("VORLAUF"); break; case "ruecklauf": console.log("RUECKLAUF"); break; case "durchfluss": console.log("DURCHFLUSS"); break; case "leistung": console.log("LEISTUNG"); break; case "energie": console.log("ENERGIE"); break; case "energieVerbr": console.log("ENERGIE_VERBR"); break; default: console.log("Default case"); } }; dropDownSensor.addEventListener("change", selectSensorFromDropDownList);