var self = this;
self.callback = $(".class"),
_.each(self.callback.find("item"), function (e) {
//some code
}),
self.callback.find(".class2").before('<div class="class3""></div>')
var self = this;
self.callback = $(".class");
_.each(self.callback.find("item"), function (e) {
//some code
});
self.callback.find(".class2").before('<div class="class3""></div>')