You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
64 lines
2.2 KiB
64 lines
2.2 KiB
15 years ago
|
/* To include this script into an xhtml page without copying and pasting it in
|
||
|
|
add the following tags into your xhtml page. Please note that these comments are
|
||
|
|
only valid within .js (JavaScript files),
|
||
|
|
do not include them if you wish to use this script within an xhtml document.
|
||
|
|
|
||
|
|
<script type="text/javascript" src="./validate.js"></script>
|
||
|
|
|
||
|
|
or copy and paste the script into your document head enclosed in
|
||
|
|
<script type="text/javascript"></script> tags
|
||
|
|
|
||
|
|
add the following in place of your usual <body> tag
|
||
|
|
<body onload="document.form1.yourname.focus();">
|
||
|
|
|
||
|
|
|
||
|
|
variable names variable descrition
|
||
|
|
|
||
|
|
yourname first name input
|
||
|
|
yoursurname second name input
|
||
|
|
addy email address
|
||
|
|
|
||
|
|
*/
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
function validate(){
|
||
|
|
if (document.form1.yourname.value.length<3){
|
||
|
|
alert("Please enter your full Forname");
|
||
|
|
document.form1.yourname.focus();
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
if (document.form1.yoursirname.value.length<3){
|
||
|
|
alert("Please enter your full Sirname.");
|
||
|
|
document.form1.yoursirname.focus();
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
if (document.form1.addy.value.length < 5){
|
||
|
|
alert("Please enter a complete email address in the form: yourname@yourdomain.com")
|
||
|
|
document.form1.addy.focus();
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
var addystring = document.form1.addy.value;
|
||
|
|
var ampIndex = addystring.indexOf("@");
|
||
|
|
var afterAmp = addystring.substring((ampIndex + 1), addystring.length);
|
||
|
|
var dotIndex = afterAmp.indexOf(".");
|
||
|
|
dotIndex = dotIndex + ampIndex + 1;
|
||
|
|
afterAmp = addystring.substring((ampIndex + 1), dotIndex);
|
||
|
|
var afterDot = addystring.substring((dotIndex + 1), addystring.length);
|
||
|
|
var beforeAmp = addystring.substring(0,(ampIndex));
|
||
|
|
var addy_regex ="^[a-zA-Z0-9_\-\.]+@[a-zA-Z0-9_\-]+\.[a-zA-Z0-9_\-\.]+$";
|
||
|
|
if ((addystring.indexOf("@") != "-1") &&
|
||
|
|
(addystring.length > 5) &&
|
||
|
|
(afterAmp.length > 0) &&
|
||
|
|
(beforeAmp.length > 1) &&
|
||
|
|
(afterDot.length > 1) &&
|
||
|
|
(addy_regex.test(addystring)) ) {
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
else{
|
||
|
|
alert("Invalid! Please enter a complete email address in the form: yourname@yourdomain.com")
|
||
|
|
document.form1.addy.focus();
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
}
|