Andrey Tsvetkov

element.style.color = "red";
element.style.background = "green";

element.style.cssText = "color:red;background:green";

document.getElementById('поле') && document.getElementById('поле').setAttribute('value', значение);;

$(document).on('customEvent', function(event, param1, param2, param3) { 
    console.log(param1, param2, param3); 
});
$(document).trigger("customEvent", [ "param1", "param2","param3" ]);