Preview:
<!--
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-->

<!DOCTYPE html>
<html>

<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width">
  <title>Replit</title>
  <link href="style.css" rel="stylesheet" type="text/css" />
</head>

<body>
 <form onsubmit="return data()"    >
   Name               <input type = "text" id= "a"> <br>
   Age <input type = "number" id= "b"> <br>
   Email <input type = "email" id= "c"> <br>
    Phone <input type = "number" id= "d"> <br>
    Password <input type = "text" id= "e"> <br>
    Re-enter Password <input type = "text" id= "f"> <br>
 <input type="submit" >
 </form>

  <script type="module" src="script.js"></script>

</body>

</html>













function data(){
let a= document.getElementById("a");
let b= document.getElementById("b");
let c= document.getElementById("c");
let d= document.getElementById("d");
let e= document.getElementById("e");
let f= document.getElementById("f");
  
  if(a==""||b==""||c==""||d==""){
    alert("all entries are mandatory");
    return false;
  }else if(isNaN(c)){
    alert("phone number must be a number");
  }else if(blur.length!=10){
    alert(" 10 digit phone no is required");
  }else if(e!=f){
   alert("passwords must be same"); 
  }
  else{
    return true;
  }
}
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