我試圖從Javascript中的選擇框中刪除指定的選項

Question

我試圖從功能中的選擇框中刪除選定的選項。下面的代碼不起作用。我究竟做錯了什麼？

function removeItem(refundItem) { 

    itemToDelete = document.getElementById("yourStuff").options[refundItem].text; 
    inCart = document.getElementById("yourCart").rows.length; 
    for (i = 1; i <= inCart; i++) { 
     maybeRefund = document.getElementById("yourCart").rows[i].cells[0].innerHTML; 
     maybeRefund = maybeRefund.trim(); 
     if (itemToDelete == maybeRefund) { 

      refundPrice = document.getElementById("yourCart").rows[i].cells[2].innerHTML; 
      document.getElementById("yourCart").deleteRow(i); 
      Money.value = Number(Money.value) + Number(refundPrice); 
      document.getElementById("yourCart").deleteRow(i); 
      document.getElementById("yourStuff").options.remove(refundItem); 

      //   document.getElementById("yourStuff").options.remove(selectedIndex); 
     } 
    } 
    document.getElementById("yourStuff").selectedIndex = 0; 
} 

Answer 1

您在循環時從列表中刪除。我想這可能是一個問題。

Looping through array and removing items, without breaking for loop

儘量向後循環。

Answer 2

應該

.. 
document.getElementById("yourStuff").remove(refundItem); 
.. 

即與指數refundItem從選擇中移除項目，ID爲yourStuff。有關詳細信息，請參見Select remove()