Question

How to write javascript to do following requirement:

Add onblur event handlers on each of the text inputs to perform validation based on the specific requirements listed below. TI have written code like this:

</head> <body form» <label for-Name >Name</label input type-text name-Name id-Name/xbr/> <label for-email Email</la How can i write the javascript to do the requirement.

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Answer #1

<!DOCTYPE html>
<html>
<body>
<form>
<label for="Name">Name</label>
<input type="text" id="Name" name="Name" onblur="NameValid()"/><br/>
<label for="email">Email</label>
<input type="text" id="email" name="email" onblur="EmailValid()"/><br/>
<label for="phone number">Phone Number</label>
<input type="text" id="phone_number" name="phone number" onblur="NumberValid()"/><br/>
</form>

<script>
function NameValid() {
var x = document.getElementById("Name").value;
var n = x.length;
if(n<5)
{
   alert("Text should be at least 5 character");
}
}
function NumberValid() {
var x = document.getElementById("phone_number").value;
var n = x.length;
if(isNaN(x)){
   alert("Not a number");
}
else
{
   if(n<5)
{
alert("Text should be exactly 10 character");
}
}

}
function EmailValid() {
var x = document.getElementById("email").value;
var n = x.length;
if(n<8)
{
   alert("Text should be at least 8 character");
}
}
</script>

</body>
</html>

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