所以,如果兩個驗證工作seperatley(如果我只是把單選按鈕驗證的功能沒有微調驗證,然後單選按鈕驗證工程,同樣反之亦然),當我把兩個函數中的驗證,無線電驗證的最高驗證工作,但是微調驗證的底部驗證不會在假設時顯示消息?我的JavaScript函數不顯示所有驗證消息
Code is below:
<head>
<meta http-equiv="Content-Type" content="text/html;charset=utf-8" />
<title>Create a Session</title>
<script type="text/javascript">
function validation() {
var errMsgO = document.getElementById("radioAlert");
var btnRadioO = document.getElementsByName("sessionNo");
var isbtnRadioChecked = false;
var errQuesMsgO = document.getElementById("numberAlert");
var questionNumberO = document.getElementsByName("txtQuestion");
for(i=0; i < btnRadioO.length; i++){
if(btnRadioO[i].checked){
isbtnRadioChecked = true;
}
}
if(!isbtnRadioChecked) {
errMsgO.innerHTML = "Please Select the Number of Sessions you Require";
} else {
errMsgO.innerHTML = "";
}
return false;
if(questionNumberO[0].value == 0){
errQuesMsgO.innerHTML = "Please Set the Number of Questions";
} else {
errQuesMsgO.innerHTML = "";
}
return false;
}
</script>
</head>
<body>
<form action="create_session.php" method="post" name="sessionform">
<table>
<tr>
<th>2: Number of Sessions :</th>
<td class="sessionNo"><input type="radio" name="sessionNo" value="1" />1</td>
<td class="sessionNo"><input type="radio" name="sessionNo" value="2" />2</td>
<td class="sessionNo"><input type="radio" name="sessionNo" value="3" />3</td>
<td class="sessionNo"><input type="radio" name="sessionNo" value="4" />4</td>
<td class="sessionNo"><input type="radio" name="sessionNo" value="5" />5</td>
</tr>
</table>
<div id="radioAlert"></div>
<table>
<tr>
<th>Number of Questions:</th>
<td class="spinner"><textarea class="spinnerQuestion" name="txtQuestion" id="txtQuestion" cols="2" rows="1"></textarea></td>
<td><button class="scrollBtn" id="btnQuestionUp"><img src="Images/black_uppointing_triangle.png" alt="Increase" /></button>
<button class="scrollBtn" id="btnQuestionDown"><img src="Images/black_downpointing_triangle.png" alt="Decrease" /></button></td>
</tr>
</table>
<div id="numberAlert"></div>
<p><input class="questionBtn" type="button" value="Prepare Questions" name="prequestion" onClick="validation()" /></p> <!-- Prepare Questions here-->
</form>
</body>
DOM元素數組永遠不會等於零。 –
此外,如果預期輸入是一個數字,爲什麼不把它放入文本輸入而不是文本區? –
當我研究spinners時,它使用了textarea而不是文本輸入框。我稍後會改變。感謝您的信息 – BruceyBandit