当我从数组填充下拉列表时，Post 没有给我一个值

Question

"答案"工作正常，但"数字"有问题

function add() {
<? addToDakavebebi($_POST['answer'], $_POST['number']);?>
}

<form method="post">
<tr>
<select id='number'>                                     
<option value="">select</option>
</select>

<select name="answer">                                  
<option value="">select</option>
<option value="1">YES</option>
<option value="2">NO</option>
</select>
<input type="submit" value="SAVE" onclick="add()">
</tr>
</form> 

它正确填充页面上的框

<script>
var ddlItems = document.getElementById("number"),
itemArray = ["a", "b", "c"];
for (var i = 0; i < itemArray.length; i++) {
var opt = itemArray[i];
var el = document.createElement("option");
el.textContent = opt;
el.value = opt;
ddlItems.appendChild(el);
}
</script>

............

Answer 1

将名称编号添加到字段中。目前您的服务器无法获取该数据

<select id='number' name='number'>                                     
<option value="">select</option>
</select>