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Question 1.(b) (10%) Write a script that allow user to enter multiple personal information, such as name, email and telephone. Display them into a description list. For any new entry of personal information should append to the end of list. Data validation needed for all fields, especially email and telephone (the length of digits must between 8 and 10). Alert a simple message to user for any invalid data found. This questions from Principal of Internet Programming Subject

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Answer #1

Answer ) I have done using javascript and html5 using html5 we can validate email through input type email allows user to input email in that input field

<!DOCTYPE html> \\html5
<html>
<script>

var result="";
function fun(){\\javascript function to validate telephone number

var name=document.getElementById("name").value; \\to get name
var email=document.getElementById("email").value; \\to get email
var telephone=document.getElementById("number").value; \\to get telephone number
if(telephone.length<8 || telephone.length>10) \\check length of telephone is between 8 and 10 else alert message will pop up
alert("telephone number must be of range 8 to 10");

else{

result+="<p>"+name+" "+email+" "+telephone+"</p>"; \\add user info in the html
document.getElementById("result").innerHTML=result;

}
}

</script>
<body>
<table> <!-- to get table information-->
<tr>
<td>Name</td>
<td><input type="text" id="name" required></td>
</tr>
<tr>
<td>Email</td>
<td><input type="email" id="email" required></td>
</tr>
<tr>
<td>Telephone</td>
<td><input type="number" id="number" required></td>
</tr>
<tr>
<td colspan="2"><input type="submit" onclick="fun()"></td>
</tr>
</table>

<div id="result"></div>

</body>
</html>

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