If you need to disable the button “Modifica”, You can just set “disabled” to true for this button’s id:
document.getElementById("buttonModifica").disabled = true;
Solution 1 :
Solution 2 :
You can get that HTML_DOM with document object then you can apply event listener on it.
Then get another id to which you want to disable and apply disable property into it
For reference :
https://developer.mozilla.org/en-US/docs/Web/API/HTMLSelectElement/disabled
Problem :
I need to disable some filed and button in a form. The form shows user data and the button “Modifica” allow the user to modify field (username, mail, password). If user is worker can modify also exp and photo field. If user is manager this field are hidden.
I wrote some javascript in order to hide and disable fields but the button “modifica” seems to be blocked and I don’t know why.
<!DOCTYPE html>
<html xmlns_th="http://www.thymeleaf.org">
<head>
<meta charset="UTF-8">
<title>Login</title>
<link rel="stylesheet" type="text/css" media="all" href="../CSS/style.css" th_href="@{.../CSS/style.css}"/>
<script type="text/javascript" src="../js/updateProfile.js" th_src="@{/js/updateProfile.js}" defer> </script>
<script type="text/javascript" th_src="@{/js/loadimage.js}" defer ></script> <!--defer fa eseguire js dopo il parsing di html-->
</head>
<body>
<div class="container">
<div th_replace="header :: header"></div>
<h1>Profilo Utente</h1>
<div class="form">
<form action="updateprofile" method="post" enctype="multipart/form-data">
<p>
<label for="username">Username: </label><br>
<input type="text" id="username" name="username" th_attr="value=${session.user.username}" required/><br>
</p>
<p>
<label for="email">Mail: </label><br>
<input type="email" id="email" name="email" th_attr="value=${session.user.email}" required/><br>
</p>
<p>
<label for="password">Password: </label><br>
<input type="password" id="password" name="password"
pattern="(?=.*d)(?=.*[a-z])(?=.*[A-Z]).{8,}"
title="Deve contenere almeno 8 caratteri di cui un numero, una lettera maiuscola e una lettera minuscola." /><br>
</p>
<div id="password-confirm-block">
<p>
<label id="text-password-confirm" for="password-confirm">Reinserisci password: </label><br>
<input type="password" id="password-confirm" />
</p>
<p id="password-message" class="error-message"></p>
</div>
<p>
Tipo di utente:<br>
<input type="radio" name="usertype" id="manager" value="manager" th_checked="${session.user.isManager!=null && session.user.isManager}" required/>
<label for="manager">Manager</label><br>
<input type="radio" name="usertype" id="worker" value="worker" th_checked="${session.user.isManager!= null && !session.user.isManager}" checked required/>
<label for="worker">Worker</label><br>
</p>
<div id="worker-data">
<p>
<label for="exp">Exp level:</label><br>
<select name="exp" id="exp">
<option value="" disabled selected>Exp level</option>
<option value="LOW" th_selected="${session.user.exp == 'LOW'}">LOW</option>
<option value="MEDIUM" th_selected="${session.user.exp == 'MEDIUM'}">MEDIUM</option>
<option value="HIGH" th_selected="${session.user.exp == 'HIGH'}">HIGH</option>
</select><br>
</p>
<p>
<label for="photo">Profile photo</label><br>
<div id="container"style="position: relative; width:300px;">
<canvas id="canvas_background" width="300px" style="position: absolute; left: 0; top: 0; z-index: 0;"></canvas>
</div>
<input type="file" name="photo" id="photo" accept="image/*"/><br>
</div>
<!-- TODO: Rivedere i messaggi di errore inseriti -->
<span class="error-message" th_if="${session.signupfailed}">Salvataggio non riuscito</span>
<p>
<input id="buttonModifica" type="button" value="Modifica" />
<input id="buttonAnnulla" type="reset" value="Annulla" />
<input id="buttonAggiorna" type="submit" value="Aggiorna" />
</p>
</form>
</div>
</div>
</body>
</html>
Javascript:
var username = document.getElementById("username");
var email = document.getElementById("email");
var password = document.getElementById("password");
var passwordConfirmBlock = document.getElementById("password-confirm-block");
var radioWorker = document.getElementById("worker");
var radioManager = document.getElementById("manager");
var exp = document.getElementById("exp");
var photo = document.getElementById("photo");
var buttonModifica = document.getElementById("buttonModifica");
var buttonAnnulla = document.getElementById("buttonAnnulla");
var buttonAggiorna = document.getElementById("buttonAggiorna");
function init() {
view();
buttonModifica.addEventListener("click", modify, true);
buttonAnnulla.addEventListener("click", view, true);
}
init();
function modify() {
unlockImputs();
buttonAnnulla.hidden=false;
buttonAggiorna.hidden=false;
buttonModifica.hidden=true;
}
function view() {
lockImputs();
buttonAnnulla.hidden=true;
buttonAggiorna.hidden=true;
buttonModifica.hidden=false;
}
function lockImputs (){
username.readOnly=true;
email.readOnly=true;
password.readOnly=true;
passwordConfirmBlock.hidden=true;
radioManager.disabled=true;
radioWorker.disabled=true;
exp.disabled=true;
photo.disabled=true;
}
function unlockImputs (){
username.readOnly=false;
email.readOnly=false;
password.readOnly=false;
radioManager.disabled=false;
radioWorker.disabled=false;
exp.disabled=false;
photo.disabled=false;
}
Comments
Comment posted by sharmav1
this seems to be a canvas issue, your canvas is I think blocking buttons
Comment posted by Stefano Ferrario
The button is not disabled. I add this row and the button seems to be disable. I can see the button but you can’t click… it has no effects
Comment posted by Saurabh
if you set the “disabled” property to true, then the button will be disabled, it will be visible but no action can’t be performed by this button. Now, You also want to hide the button or just to disable it?