I have this code and it works very well:
++++++++++++++++++++++++++++
window.onbeforeunload = function() {
if (this.hasUnsavedChanges) {
return 'you have unsaved changes';
}
}.bind(this);
+++++++++++++++++++++++++++++
But when I try to convert it to Prototype style, it doesn't work. I
get no confirmation box asking me if I want to stay on the page. I
want to be as cross-browser compatible as possible, so could someone
help me do it the Prototype way?
++++++++++++++++++++++++++++
Event.observe(
window,
'beforeunload',
function() {
if (this.hasUnsavedChanges) {
return 'you have unsaved changes.';
}
}.bind(this)
);
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