我有一個函數可以將 JSON 文件中的元素格式化為表格。該表工作正常，但現在我試圖在另一列上實現一個按鈕，該按鈕從文件中刪除所述元素。但是當我這樣做時，它出現了錯誤： Uncaught (in promise) TypeError: xButton.setAttribute is not a function這是我的代碼：      async function table() {        let response = await fetch('/tasks', {          method: "GET",          headers: {          'Content-Type': 'application/json'          }        });        let jsonPayload = await response.json();        var table = document.getElementById("tableBody");        tableBody.innerHTML = "";        for(var i = jsonPayload.length - 1; i > -1; i--) {          var row = tableBody.insertRow(0);            var firstColumn = row.insertCell(0);            var secondColumn = row.insertCell(1);            var thirdColumn = row.insertCell(2);            var fourthColumn = row.insertCell(3);            var xButton = '<button>x</button>';            xButton.setAttribute("onclick", `deleteElement('${jsonPayload[i].id}')`);          firstColumn.innerHTML = jsonPayload[i].id;          secondColumn.innerHTML = jsonPayload[i].desc;                  thirdColumn.innerHTML = jsonPayload[i].importance;          fourthColumn.innerHTML = xButton;        }              }這是刪除元素的代碼//function which deletes a task.       function deleteElement() {      //Variable id is the number submitted in the input form to Delete tasks        var id = document.getElementById("deleteId").value;      //This is the url that is fetched with the variable id which deletes the function using the code from the backend.       var url = "/tasks/"+id;      //isNan checks whether id is not a number      if (isNaN(id)) {        //If it is not a number the error message is displayed.         alert("The value inputted must be a number!");        //Returns out of the function without proceeding        return;      }主要問題是 xButton，任何幫助表示贊賞。