Tek-Tips is the largest IT community on the Internet today!
Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!
-
Congratulations strongm on being selected by the Tek-Tips community for having the most helpful posts in the forums last week. Way to Go!
easy Javascript textbox input validation
- Thread starter techskool
- Start date
This is the basics of how to do it. You can expand it from here:
In the <head> section:
<script language="JavaScript" type="text/javascript">
function validateForm()
{
val1 = document.frmName.text1.value;
val2 = document.frmName.text2.value;
val3 = document.frmName.text3.value;
val4 = document.frmName.text4.value;
if (val1.length == 0 && val2.length == 0 && val3.length == 0 && val4.length == 0)
{
alert("Enter your error message here.");
document.frmName.text1.focus();
return false;
}
}
</script>
In the <body> section:
<form action="okayPage.html" method="post" name="frmName" onSubmit="return validateForm();">
<input type="text" width="20" name="text1"><br>
<input type="text" width="20" name="text2"><br>
<input type="text" width="20" name="text3"><br>
<input type="text" width="20" name="text4"><br>
<input type="submit" value="submit">
</form>
In the <head> section:
<script language="JavaScript" type="text/javascript">
function validateForm()
{
val1 = document.frmName.text1.value;
val2 = document.frmName.text2.value;
val3 = document.frmName.text3.value;
val4 = document.frmName.text4.value;
if (val1.length == 0 && val2.length == 0 && val3.length == 0 && val4.length == 0)
{
alert("Enter your error message here.");
document.frmName.text1.focus();
return false;
}
}
</script>
In the <body> section:
<form action="okayPage.html" method="post" name="frmName" onSubmit="return validateForm();">
<input type="text" width="20" name="text1"><br>
<input type="text" width="20" name="text2"><br>
<input type="text" width="20" name="text3"><br>
<input type="text" width="20" name="text4"><br>
<input type="submit" value="submit">
</form>
- Thread starter
- #3
- Status
Similar threads
- Locked
- Question