Imagine having the window object's alert method and wanting to improve it with a stylish alert box.
Furthermore, preserving the current alert method for switching back after our application completes.
We attempted something like this code snippet below, but encountered errors in Firefox console.
window.prototype.alert = function(){
}
In the realm of JavaScript, there is no such thing as a window.prototype object. The window entity exists as a global object within the context of JavaScript and it does not derive from any prototype.
Despite this fact, the desired functionality can still be achieved through the implementation of the following code:
window.old_alert = window.alert;
window.alert = function(txt) {
// Implement custom behavior here
this.old_alert(txt);
}
Here is a way you can customize the alert function:
var base = window.alert;
window.alert = function(message) {
document.getElementById("myalertwidget").innerHTML = message;
return base.apply(this, arguments);
};
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