遺漏的類型錯誤：無法讀取空的特性「parentNode」的JavaScript

Question

此代碼應使一個元素從列表中消失時，它是在另一個元素（稱爲餅乾怪獸）下降

addEvent(cookiemonster, 'drop', function (e) { 
    if (e.stopPropagation) e.stopPropagation(); 

    var el = document.getElementById(e.dataTransfer.getData('text')); 
    el.parentNode.removeChild(el); 
    return false; 
}); 

Answer 1

創建一個附配變這樣

addEvent(cookiemonster, 'drop', function (e) { 
    if (e.stopPropagation) e.stopPropagation(); 

    var el = document.getElementById(e.dataTransfer.getData('text')); 
    var aux = el.parentNode; 
    aux.removeChild(el); 
    return false; 
});