我正在做一些事情来阻止用户提交 HTML 表单而不留下错误点击的评论。
条件:
- 仅当选择“False Hit”单选按钮时
- 备注文本字段不能为空(必填)
目前，我使用 JavaScript 来检查文本字段(备注)是否为空。
function empty() {
var x;
x = document.getElementById("roll-input").value;
if (x == "") {
alert("Please enter remarks for false hits selected.");
return false;
};
我还可以使用 JavaScript 检查选择了哪个单选按钮。
<input type="radio" name="select" id="truehit" value="true" />
<input type="radio" name="select" id="falsehit" value="false" />
if(document.getElementById('falsehit').checked) {
//False Hit radio button is checked
}
else if(document.getElementById('truehit').checked) {
//True Hit radio button is checked
}
但是，我一直坚持将这两个条件联系在一起。有没有更简单的方法？任何帮助是极大的赞赏。预先感谢您。
这就是我的表单的样子。
<body bgcolor="#FFFFFF">
<br />
<div align="center" class="h1">
<h1>Entity Search</h1><br />
</div>
</html>
<br />
<?php
include("db_connect.php"); //connect to database
@$loginid = strtoupper(base64_decode($_POST['LanID'])); //to capture
the user's LanID as the UserID
if($loginid == "")
{
$userID = $_SESSION['loginid'];
}
else
{
$_SESSION['loginid'] = $loginid;
$userID = $_SESSION['loginid'];
}
$userID = $_SESSION['loginid'];
//to insert date and time of the records
date_default_timezone_set('Asia/Singapore');
$Date = date('Y-m-d');
$Time = date ('h:i:s a');
$userID = $_SESSION['loginid'];
$loginid = "";
$entityfromform = $_GET["entity"];
?>
<br />
<?php
//connection to database
$connectionInfo = array( "Database"=>"test","UID"=>$test,"PWD"=>$test);
$db_connect=sqlsrv_connect($serverName, $connectionInfo);
//to retrieve the department name from the user database and insert
department name of the user into the records
$namesql = "SELECT Name, DeptName, Role FROM RPDB.dbo.Userdb WHERE
LanID='$userID';";
$name_query = sqlsrv_query($db_connect,$namesql);
while($row = sqlsrv_fetch_array($name_query, SQLSRV_FETCH_ASSOC))
{
$nameontop = iconv("gb2312","UTF-8",$row['Name']);
$admincheck = iconv("gb2312","UTF-8",$row["Role"]);
$deptnamecheck = iconv("gb2312","UTF-8",$row["DeptName"]);
}
$negative = "Negative Hit: No results found.<br />";
$result = "$entityfromform <br />Negative Hit: No results found.<br />";
//variable to insert into the table as result
//search for keyword from form in the Entity Table List where Name =
keyword
$entitysql = "SELECT * FROM RPDB.dbo.entitysearch_table WHERE Name LIKE
'%" . $entityfromform . "%' OR Name = '".$entityfromform."'";
$entity_query = sqlsrv_query($db_connect,$entitysql);
//variables
$i=0;
while($row = sqlsrv_fetch_array($entity_query, SQLSRV_FETCH_ASSOC))
{
$name[$i] = $row["Name"];
$brn[$i] = $row["Business_Registration_Number"];
$address[$i] = $row["Registered_Address"];
$group[$i] = $row["Applicable_Limb_of_Related_Party_Group"];
$selectradio[$i] = 'selectradio'.$i;
$text[$i] = 'text'.$i;
$i++;
}
if(@$name != NULL) //Positive Result
{
echo "<input type='button' name=uncheck' value='Uncheck All'
class='uncheck' onClick='window.location.reload()'>"; //uncheck all
function where it clears all changes
echo "<h2><div align='center'>Results found for:
$entityfromform</div></h2><br />";
//table to display the data
echo "<div align='center'>
<table>
<tr>
<th>Name</th>
<th>Business Registration Number</th>
<th>Registered Address</th>
<th>Applicable Limb of Related Party Group</th>
<th>True Hit</th>
<th>False Hit</th>
<th>Unable To Ascertain</th>
<th>Remarks, for false hit</th>
</tr>
</div>";
echo "<strong><div class='wording'>Positive Hit: </div></strong>";
echo "<br /><br />";
$x=0;
?>
<!--The form data is sent for processing to action_handler.php by HTTP POST method-->
<form method="post" id="form" action="action_handler.php" enctype="multipart/form-data">
<?php
//data displayed in tables along with checkboxes for true hit, false hit, unable to ascertain and text box for remarks where applicable
for($x=0;$x<$i;$x++)
{
echo "<tr>
<td>" . $name[$x] . "</td>
<td>". $brn[$x] . "</td>
<td>". $address[$x] . "</td>
<td>". $group[$x] . "</td>
<td>
<label class='container'>
<input type='radio' id='truehit' name='".$selectradio[$x]."' value='true hit' class='btn' required>
<span class='checkmark'></span>
</label>
</td>
<td>
<label class='container'>
<input type='radio' id='falsehit' name='".$selectradio[$x]."' value='false hit' class='btn'>
<span class='checkmark'></span>
</label>
</td>
<td>
<label class='container'>
<input type='radio' id='unabletoascertain' name='".$selectradio[$x]."' value='unabletoascertain' class='btn'>
<span class='checkmark'></span>
</label>
</td>
<td>
<label><input type='text' name='".$text[$x]."'>
</label>
</td>
</tr>" ;
}
echo "</table>"; //table closed
echo "<br /><br /><br />";
echo "<input type='button' value='Submit' class='submit' onClick='empty()'>"; //submit button to confirm
?>
</form>
<?php
//sessions to be used in others
$_SESSION['num'] = $x;
$_SESSION['entityfromform'] = $entityfromform;
}
else
{
echo "<div align='center'><h2>Results found for: $entityfromform</h2>
<br />";
echo "<div class='wording' align='center'>$negative</div><br><br>
<br>";
}
?>
</table>
</body>
最佳答案
如果文本框有值，则您的empty()函数不会返回任何内容，因此对于该条件它是未定义的；您可以根据您的要求创建一个函数，例如:
function doSubmit()
{
if(document.getElementById('falsehit').checked)
{
if(document.getElementById("roll-input").value == '')
{
alert("Please enter remarks for false hits selected.");
return false;
}
}
return true;
}
并调用此方法进行验证，因此如果falsehit被检查并且remarks有一个值，它将返回true 或 false。
希望这有帮助；如果我无法理解您的问题，请告诉我..
祝你编码愉快...
关于javascript - 当用户选择 False Hit 单选按钮时，如果文本字段为空，如何确保无法提交表单？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/55113788/