這是我的 HTML 代碼：<select id="stand" onchange="myFun2()"> <option value="platinumGallery">Platinum Gallery</option> <option value="superHospitalityStand">Super Hospitality Stand</option> <option value="northWestStand">North West Stand</option> <option value="eastStand">East Stand</option></select><br><br><label>Cost Of Ticket: </label><input id="costOfTicket" type="text" readonly>和JS代碼：function myFun2(){ var costOfTicket; var selectedStand = document.getElementById("stand").value; if(selectedStand = "platinumGallery"){ costOfTicket = 25000; } else if(selectedStand = "superHospitalityStand"){ costOfTicket = 20000; } document.getElementById("costOfTicket").value = costOfTicket;}每當onchange()事件發生時，我想Cost Of Ticket根據選擇的值進行顯示select。但它會在事件發生25000后顯示onchange()，然后無論選擇的值如何都不會改變。如何修正代碼來完成上述任務？
如何在 JavaScript 中的 OnChange() 事件中使用 If Else？
翻閱古今
2023-10-14 15:53:20
