How to retrieve the values from an form to another html?
Question
My code is ...
<form name="myForm" action="demo_form.html" onsubmit="return validateForm()" method="GET">
<input type="text" name="StuserID" id="basic" value="" placeholder="userID" />
<input type="submit" value="Login"/>
So, when I pressed the Login it will call method validateForm() and returns the boolean
function validateForm()
{
var x=document.forms["myForm"]["StuserID"].value;
if (x==null || x=="")
{
alert("Name must be filled out");
return false;
}
}
Firstly, if the userId is null it should show an alert "Name must be filled out" and return false. In my case, it is succeeding and move to demo_form.html. How can I make it so that form submission and continuing to demo_form.html is only done when function returns true?
Secondly, how do I get the userid in demo_form.html from the form when pressing the login button?
3 answers
solution1
3
you have to use php file to retrieve data from html form.your html code form should be
<form name="myForm" action="demo_form.php" onsubmit="return validateForm()" method="GET">
<input type="text" name="StuserID" id="basic" value="" placeholder="userID" required />
<input type="submit" value="Login"/>
and then
function validateForm()
{
var x=document.getElementById["StuserID"].value;
if (x=="")
{
alert("Name must be filled out");
return false;
}
else
{
return true;
}
}
your should use following code for demo_form.php file
<?php
$user = $_GET['StuserID'];
echo $user;
?>
solution2
0 2013-11-29 06:06:11
1) Because false prevent the default behavior of form submit.
2) Create a session and use userid in session variable
solution3
0 2013-11-29 06:26:58
I did't got exact error but in my case this following code works you can try this also
<!DOCTYPE html>
<html>
<head>
<script>
function validateForm()
{
alert("sdfdfsf");
// return false;
var x=document.forms["myForm"]["StuserID"].value;
if (x==null || x=="")
{
alert("Name must be filled out");
return false;
}
}
</script>
</head>
<body>
<form name="myForm" action="demo_form.html" onsubmit="return validateForm()" method="GET">
<input type="text" name="StuserID" id="basic" value="" placeholder="userID" />
<input type="submit" value="Login"/>
</form>
</body>
</html>
and you can use jquery function also
Like .submit
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