Answers for "jquery function called onDeleteMovie."

jquery click event

$('#selector').on('click',function(){
    //Your code here
});

jquery check if document loaded

jQuery offers several ways to attach a function that will run when the DOM is ready. All of the following syntaxes are equivalent:

$( handler )
$( document ).ready( handler )
$( "document" ).ready( handler )
$( "img" ).ready( handler )
$().ready( handler )