<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Save new student</title>
<script>
function insertdata()
{
var n = document.getElementById("name").value;
var f = document.getElementById("family").value;
var m = document.getElementById("mark").value;
var t = document.getElementById("tell").value;
if ((n=="") || (f=="") || (m=="") || (t=="")){
var error=document.getElementById("error").innerHTML="fill out the form with valid values";
}
**else if()**
{
}
else{
frminsert.submit();
}
}
</script>
</head>
<body>
please enter your data:
<br/>
<form action="saveinsert.php" method="post" name="frminsert">
Name :
<input type="text" name="name" id="name" />
<br/>
Family :
<input type="text" name="family" id="family" />
<br/>
Mark :
<input type="text" name="mark" id="mark" />
<br/>
Tell :
<input type="text" name="tell" id="tell" />
<br />
<input type="button" value="Save New Student" onclick="insertdata();" />
<input type="reset" value="Reset Form" />
</form>
<p id="error"></p>
<a href="show.php">show the list of students</a>
</body>
</html>
My code will indicate the error message with this statement : Fill out the form properly.
I'm going to elaborate it more , I need to eliminate the error message which is mentioned above , when user start to type on keyboard.
I think this is what you need? (Clearing the error message)
document.getElementById("error").innerHTML= "";
If you want it to happen when the user does something, like types into a box then you'll need to add an event listener on to that input something like
<input onKeyDown="removeErrorMessage()" ... />
...
<script>
function removeErrorMessage{
document.getElementById("error").innerHTML= "";
};
</script>
You can put this into first line:
function cleanError()
{
document.getElementById("error").innerHTML= "";
}
And each input put onBlur="cleanError()
" like this:
<input onBlur="cleanError()" type="text" name="family" id="family" />
Good Luck !
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