jQuery event on value change of input hidden

Question

I have this input hidden:

I want to alert \"hey\

Answer 1

$(function(){
    var $hello= $('[id$="myValue"]');

    $hello.on("change", function(){ //bind() for older jquery version
        alert('hey');
    }).triggerHandler('change'); //could be change() or trigger('change')
});

Then, each time you change the value of targeted hidden inputs, trigger handler, e.g:

$('#j_idt26:myValue').val('0?200?').triggerHandler('change');

That's because onchange event is not fired automatically changing its value programatically.