[рони]

renton88,

document.addEventListener("DOMContentLoaded", function() {
    var popup = document.querySelectorAll(".popup"),
        modal = document.querySelector(".modal"),
        modalBtn = document.getElementById("btn-send"),
        modalClose = document.querySelector(".modal-close");
    [].forEach.call(popup, function(node, i) {
        node.addEventListener("click", function() {
            var html = "first block";
            if (node.id == "type2") html = "new text";
            document.querySelector(".first").innerHTML = html;
            modal.classList.add("active")
        })
    });
    modalClose.addEventListener("click", function() {
        modal.classList.remove("active")
    })
});