Java-Script/exp26js.html at master · DevaGaneshB/Java-Script · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
<!--HTML javascript code to demonstrate form validation-->
<html>
<head>
<title>Form validation</title>
</head>
<body>
<form name="myForm" >
Name:<input type="text" name="name"><br><br>
Email: <input type="text" name="email"><br><br>
Address:<textarea rows="4" cols="50" name="comment" form="usrform">
Enter text here...</textarea>
</form>
<button onclick="valid()" >Register</button>
<script>
function valid(){
var x=document.forms["myForm"]["name"].value;
var y = document.forms["myForm"]["email"].value;
    var atpos = y.indexOf("@");
    var dotpos = y.lastIndexOf(".");
    if (atpos<1 || dotpos<atpos+2 || dotpos+2>=y.length || x =="") {
        alert("Invalid Input");}
    else{
alert("Registred Successfully");}
}
</script>
</body>
</html>