$('<input>').attr({
type: 'hidden',
id: 'foo',
name: 'bar'
}).appendTo('form');
var hv = $('#h_v').val();
$("#texens").val("tinkumaster");
console.log($("input:hidden[value='" + cat_id + "']").length > 0)
$('button[id^=bttn_]').click(function() {
var val = $(this).siblings("input").val()
})