js导出功能实现

[HanSummer]

参考 : https://segmentfault.com/q/1010000000655751

function fake_click(obj) {
    var ev = document.createEvent("MouseEvents");
    ev.initMouseEvent(
        "click", true, false, window, 0, 0, 0, 0, 0
        , false, false, false, false, 0, null
        );
    obj.dispatchEvent(ev);
}

function export_raw(name, data) {
    var urlObject = window.URL || window.webkitURL || window;

    var export_blob = new Blob([data]);

    var save_link = document.createElementNS("http://www.w3.org/1999/xhtml", "a")
    save_link.href = urlObject.createObjectURL(export_blob);
    save_link.download = name;
    fake_click(save_link);
}