jQuery trigger function not working on ajax generated content

Question

Code How to fire click trigger on ajax generated html tag

Is Working

$(document).on("click","#Copyright #disclaimer_btn_trg",function(e){
    alert($( "#DesclaimerButton span" ).html());
});

Is Notworking

$(document).on("click","#Copyright #disclaimer_btn_trg",function(e){
    //alert($( "#DesclaimerButton span" ).html());
    $( "#DesclaimerButton span" ).trigger( "click" );
});