javascript validation1
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<style>
span{
color:red;
}
.B{
border:2px solid red;
outline: none;
}
</style>
<script>
function f1(e){
V=e.value;
console.log(V)
Id=e.id;
console.log(Id);
errid="err"+e.id;
// alert(errid);
if(!V){
document.getElementById(errid).innerText="please fillname";
document.getElementById(Id).focus();
}
if(V){
document.getElementById(errid).innerText="";
}
}
function f2(){
// document.getElementById(errid).innerText="";
}
</script>
</head>
<body>
<form action="login.py">
<label for="name">Name</label>
<input type="text" name="nm" id="nm"
onblur="f1(this)" onfocus="f2(this)"
>
<span id='errnm'></span>
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