我遇到了以下問題:1)saveRow函數不保存行。我得到這個錯誤:Uncaught TypeError: Cannot set property name of undefined at at saveRow at HTMLInputElement.onclick
。 2)deleteRow
不起作用。我收到類似的錯誤:Uncaught TypeError: Cannot set property 'innerHTML' of null
。 3)在editRow中,我的字段變得可編輯,但使用之前保存的默認值。例如,列表總是A,B,C,這不是我想要的。我希望列表的初始值是之前選擇的值。 我正在做的事情應該是錯的。下面是代碼:HTML和JavaScript動態表的問題
HTML:
<html>
<head>
</head>
<body>
<div id="wrapper">
<table align='center' cellspacing=2 cellpadding=5 id="data_table" border=1>
<thead>
<tr>
<th>Name</th>
<th>Level</th>
<th>Action</th>
</tr>
</thead>
<tbody id="table-rows">
<tr>
<td><input type="text" id="name-text"></td>
<td>
<select name="levels-list" id="levels-list">
<option value="A" id="option-1">A</option>
<option value="B" id="option-2">B</option>
<option value="C" id="option-3">C</option>
</select>
</td>
<td><input type="button" class="add" value="Add Row" id="add-button"></td>
</tr>
</tbody>
</table>
</div>
<script src="get-text.js"></script>
</body>
</html>
腳本:
var myArray = [{
"name": "aaa",
"level": "A"
}, {
"name": "bbb",
"level": "B"
}, {
"name": "ccc",
"level": "C"
}];
display();
function display() {
var length = myArray.length;
var htmlText = "";
for (var i = 0; i < length; i++) {
htmlText +=
"<tr id='row" + i + "'>\
<td>" + myArray[i].name + "</td>\
<td>" + myArray[i].level + "</td>\
<td>\
<input type='button' id='edit_button" + i + "' value='Edit' class='edit' onclick='editRow("+i+")'> \
<input type='button' id='save_button" + i + "' value='Save' class='save' onclick='save_row(" + i + ")'> \
<input type='button' value='Delete' class='delete' onclick='delete_row(" + i + ")'>\
</td>\
</tr>";
}//end loop
htmlText+=
"<tr>\
<td><input type='text' id='name-text'></td>\
<td>\
<select name='levels-list' id='levels-list'>\
<option value='A' id='option-1'>A</option>\
<option value='B' id='option-2'>B</option>\
<option value='C' id='option-3'>C</option>\
</select>\
</td>\
<td><input type='button' class='add' value='Add Row' id='add-button' ></td>\
</tr>";
document.getElementById("table-rows").innerHTML = htmlText;
}//end display
var addButton=document.getElementById("add-button");
addButton.addEventListener('click', addRow, false);
function addRow(){
event.preventDefault();
var newData= document.getElementById("name-text").value;
var newLevel = document.getElementById("levels-list").value;
var table = document.getElementById("data_table");
var tableLength = (table.rows.length)-1;
// console.log(tableLength);
var row = table.insertRow(tableLength).innerHTML=
"<tr id= 'row"+tableLength+"'>\
<td id='name-text"+tableLength+"'>"+newData+"</td>\
<td id='levels-list"+tableLength+"'>"+newLevel+"</td>\
<td><input type='button' id='edit-button"+tableLength+"' value='Edit' class='edit' onclick='editRow("+tableLength+")'> \
<input type='button' id='save-button"+tableLength+"' value='Save' class='save' onclick='saveRow("+tableLength+")'> \
<input type='button' id= 'delete-button"+tableLength+"' value='Delete' class='delete' onclick='deleteRow("+tableLength+")'>\
</td>\
</tr>";
document.getElementById("name-text").value="";
}//end addRow
function editRow(no)
{
document.getElementById("edit-button"+no).disabled=true;
//document.getElementById("save-button"+no).style.display="block";
var name=document.getElementById("name-text"+no);
var level=document.getElementById("levels-list"+no);
var nameData=name.innerHTML;
var levelData=level.innerHTML;
name.innerHTML="<input type='text' id='name_text"+no+"' value='"+nameData+"'>";
level.innerHTML='<select id="levels-list'+no+'">\
<option value="A" id="option-1">A</option>\
<option value="B" id="option-2">B</option>\
<option value="C" id="option-3">C</option>\
</select>' ;
document.getElementById("levels-list"+no).value = levelData;
}
function deleteRow(no) {
myArray.splice(no, 1);
document.getElementById("row"+no).innerHTML="";
//display();
} //end deleteRow
function saveRow(no)
{
myArray[no].name = document.getElementById("name-text"+no).value;
myArray[no].level = document.getElementById("levels-list"+no).value;
document.getElementById("row"+no).innerHTML =
"<tr id= 'row"+no+"'>\
<td id='name-text"+no+"'>"+myArray[no].name+"</td>\
<td id='levels-list"+no+"'>"+myArray[no].level+"</td>\
<td><input type='button' id='edit-button"+no+"' value='Edit' class='edit' onclick='editRow("+no+")'> \
<input type='button' value='Delete' class='delete' onclick='deleteRow("+no+")'>\
</td>\
</tr>";
}//end saveRow
謝謝。但是,你所說的沒有任何真正的效果。您發佈的修改與我發佈的內容沒有什麼不同,並且不能解決問題。您提供的代碼鏈接不會運行。 – user7945230
好的。編輯現在工作。但是你的鏈接中的代碼不是。沒有任何按鈕(保存,編輯,刪除)正在執行該功能。 – user7945230
我沒有保存jsfiddle更新URL上的最新版本-.- – quirimmo