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How to validate password in Javascript?


Confirm password validation in JavaScript

<html>  
<head>  
<title> Verification of valid Password </title>  
</head>  
<script>  
function verifyPassword() {  
  var pw = document.getElementById("pswd").value;  
  //check empty password field  
  if(pw == "") {  
     document.getElementById("message").innerHTML = "**Fill the password please!";  
     return false;  
  }  
   
 //minimum password length validation  
  if(pw.length < 8) {  
     document.getElementById("message").innerHTML = "**Password length must be atleast 8 characters";  
     return false;  
  }  
  
//maximum length of password validation  
  if(pw.length > 15) {  
     document.getElementById("message").innerHTML = "**Password length must not exceed 15 characters";  
     return false;  
  } else {  
     alert("Password is correct");  
  }  
}  
</script>  
  
<body>  
<center>  
<h1 style="color:green">Javatpoint</h1>  
<h3> Verify valid password Example </h3>  
  
<form onsubmit ="return verifyPassword()">  
<!-- Enter Password -->  
<td> Enter Password </td>  
<input type = "password" id = "pswd" value = "">   
<span id = "message" style="color:red"> </span> <br><br>  
  
<!-- Click to verify valid password -->  
<input type = "submit" value = "Submit">  
  
<!-- Click to reset fields -->  
<button type = "reset" value = "Reset" >Reset</button>  
</form>  
</center>  
</body>  
</html>  

Output


Confirm Password Validation

<html>  
<head>  
<title> Password Matching Validation </title>  
</head>  
<script>  
function matchPassword() {  
  var pw1 = document.getElementById("pswd1");  
  var pw2 = document.getElementById("pswd2");  
  if(pw1 != pw2)  
  {   
    alert("Passwords did not match");  
  } else {  
    alert("Password created successfully");  
  }  
}  
</script>  
  
<body>  
<center>  
<form>  
<h1 style="color:green">Javatpoint</h1>  
<h3> Confirm password Validation Example </h3>  
<!-- Enter Password -->  
<td> Enter Password </td>  
<input type = "password" name = "pswd1"> <br><br>  
  
<!-- Enter Confirm password -->  
<td> Confirm Password </td>  
<input type = "password" name = "pswd2"> <br><br>  
  
<!?Click to validate confirm password -->  
<button type = "submit" onclick="matchPassword()">Submit</button>  
  
<!-- Click to reset fields -->  
<button type = "reset" value = "Reset" >Reset</button>  
</form>  
</center>  
</body>  
</html> 

Output



Conclusion

In this page (written and validated by ) you learned about . What's Next? If you are interested in completing Javascript tutorial, we encourage you simply to start here: Javascript Tutorial.



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