JavaScript Window Alert
<!DOCTYPE html>
<html>
<body>
<h2>Very Serious Alert!!</h2>
<script>
alert("Never Gonna Give You Up");
</script>
</body>
</html>
Rick Astley
<!DOCTYPE html>
<html>
<body>
<h2>Very Serious Alert!!</h2>
<script>
alert("Never Gonna Give You Up");
</script>
</body>
</html>
alert("Hello! I am an alert box!!"); Alert.alert(
'Photo uploaded!',
'Your photo has been uploaded to Firebase Cloud Storage!'
);// window.alert(message);
/*
`window.alert` opens a dialog with an "Ok" button. Upon
receiving input, the dialog is closed.
*/
window.alert("Warning! Something has happened...");
/*
Note that this will pause code execution until
the dialog receives input. You can't fully get
around this, however using asynchronous
functions or promises, you can get other
statements to be called just after the dialog
is closed and before the dialog returns its
response.
*/
window.alert = (function() {
const synchronous_confirm = window.alert;
return async function(message) {
return synchronous_confirm(message);
};
})();
// OR
window.alert = (function() {
const synchronous_confirm = window.alert;
return function(message) {
return new Promise((res, rej) => {
try {
res(synchronous_confirm(message));
} catch (error) {
rej(error);
}
});
};
})();alert("string");alert("Example alert")