pushHistory();

function pushHistory() {

    var state = {

            title: "title",

            url: "#"

        };

    window.history.pushState(state, "title", "#");

}

if (typeof window.addEventListener != "undefined") {

    window.addEventListener("popstate", function (e) {

        WeixinJSBridge.call('closeWindow');

    }, false);

} else {

    window.attachEvent("popstate", function (e) {

        WeixinJSBridge.call('closeWindow');

    });

}