I am trying that, when I click on a button it shows a alert message and go to another page
function password_change_function() {
  var x = document.getElementById("password_change").value;
  alert("Password is changed");
  window.location.assign("viewprofile.php");
}<form>
  <table>
    <tr>
      <td><strong>Current Password</strong></td>
      <td><strong>:</strong></td>
      <td><input type="password" name="currentpassword" value="ratul@aiub" /></td>
    </tr>
    <tr>
      <td><strong>New Password</strong></td>
      <td><strong>:</strong></td>
      <td><input type="password" name="newpassword" value="kumar@ai" /></td>
    </tr>
    <tr>
      <td><strong>Retype New Password</strong></td>
      <td><strong>:</strong></td>
      <td><input type="password" name="retypepassword" value="kumar@ai" /></td>
    </tr>
  </table>
  <p align="center"><input id="password_change" type="submit" value="Submit" onclick="password_change_function()" /></p>
</form>the main problem is ,it shows the alert message but page not changed
 
     
     
     
     
    