javascript onclick event listener
document.getElementById("myBtn").addEventListener("click", function() {
alert("Hello World!");
});javascript onclick event listener
document.getElementById("myBtn").addEventListener("click", function() {
alert("Hello World!");
});js addeventlistener click
document.getElementById("ELEMENT_ID").addEventListener("click", function() {
//insert here the code to be executed
});js addeventlistener click
// html
<!DOCTYPE html>
<html>
<head>
<title>Test HTML</title>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script>
</head>
<body>
<form method="post">
<div>
<label for="terms_and_conditions">I agree to the Terms and Conditions:</label>
<input type="checkbox" id="terms_and_conditions" value="1" />
</div>
<div>
<button type="submit" id="submit_button" disabled>Sign Up</button>
</div>
</form>
<script src="test.js"></script>
</body>
</html>
// jQuery option - test.js
$("#terms_and_conditions").click(function () {
//If the checkbox is checked.
if ($(this).is(":checked")) {
//Enable the submit button.
$("#submit_button").attr("disabled", false);
} else {
//If it is not checked, disable the button.
$("#submit_button").attr("disabled", true);
}
});
//js options - test.js
let privacyCheck = document.querySelector("#terms_and_conditions");
privacyCheck.addEventListener("click", function () {
if (privacyCheck.checked) {
document.querySelector("#submit_button").disabled = false;
} else {
document.querySelector("#submit_button").disabled = true;
}
});
// if you decide to use the js version remove jQuery from the header to avoid confusionCopyright © 2021 Codeinu
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