在php中使用javascript进行验证[关闭]
问题描述:
I want to validate my contact form using JavaScript but I dont know the validation codes and where to include,
I want validations should occur before redirecting to thank_you.php page
Plz help me...
HTML
<fieldset>
<?php include("formcode.php"); ?>
</fieldset>
formcode.php
<form method='post' action="database.php">
NAME: <input type='text' name='name' id='name' />
Email: <input type='text' name='email' id='email' />
Contact: <input type='text' name='contact' id='contact' />
Tour:
<select id="tour" name="tour" >
<option value="">--Select Tours--</option>
<option value="Tour1">Tour1</option>
<option value="Tour2">Tour2</option>
</select><br/>
Location:
<select id="location" name="location" >
<option value="">--Select Your Location--</option>
<option value="Loc1">Loc1</option>
<option value="Loc2">Loc2</option>
</select><br/>
Comment:<br />
<textarea name='comment' id='comment' /></textarea><br />
<input type='submit' value='Submit' />
</form>
database.php
<?php
if( $_POST )
{
$con = mysql_connect("localhost","root","");
if (!$con)
{
die('Could not connect: ' . mysql_error());
}
mysql_select_db("db_name", $con);
$users_name = $_POST['name'];
$users_email = $_POST['email'];
$users_contact = $_POST['contact'];
$users_tour = $_POST['tour'];
$users_location = $_POST['location'];
$users_comment = $_POST['comment'];
$users_name = mysql_real_escape_string($users_name);
$users_email = mysql_real_escape_string($users_email);
$users_contact = mysql_real_escape_string($users_contact);
$users_tour = mysql_real_escape_string($users_tour);
$users_location = mysql_real_escape_string($users_location);
$users_comment = mysql_real_escape_string($users_comment);
$query = "
INSERT INTO `db_name`.`dbtable` (`id`, `name`, `email`, `contact`, `tour`, `location`, `comment`, `timestamp`, `articleid`)
VALUES ( Null, '$users_name', '$users_email', '$users_contact', '$users_tour', '$users_location', '$users_comment', CURRENT_TIMESTAMP);";
mysql_query($query);
$url = 'thank_you.php';
echo '<META HTTP-EQUIV=Refresh CONTENT="0; URL='.$url.'">';
mysql_close($con);
include("mail.php");
}
?>
答
Perform the validation using javascript before submitting the form as shown below. First give id to your form so you can easily submit via JS
<form method='post' action="database.php" id='frm'></form>
make a call to validate function from the submit button like this
<input type='submit' value='Button' onclick=javacript:validate(); />
<script language=javascript> //easy one by one validation. this allow full control
function validate(){
if (document.getElementById('name').value==''){
alert('name is required');//customize this for your need. You may use div display
return;
}
//repeat the above for each form tags and values
document.getElementById('frm').submit();//submit the form
}
</script>
There are more advanced JQuery plugin for validation, the above is the simple primitive method