Undismissable alerts

[jtullett]

In the example page (https://xdsoft.net/jqplugins/datetimepicker/), the example "handler onChangeDateTime Example #" spawns an alert message when the date changes. In my browser (Chrome 73.0.3683.86) the alert immediately respawns when I click OK, in an infinite loop.

[attack68]

possibly links to #647 : see my solution there

[hapiit]

Same here, infinite loop even on the official example and on my own example. The issue here seems to be the alert. Avoid an alert, then the function is called one or two times, but that is ok for me.