EditorPath.js

$(".menu > li:nth-child(3)").unbind().click(function() {
    open(loadMap);
});
$(".menu > li:nth-child(4)").unbind().click(function() {
    var arr = JSON.parse(ed.map_saver.map2str(ed.map_list.active_map));
    var json = {
        vers: arr[0],
        name: arr[4],
        briefing: arr[5],
        debriefing: arr[6],
        map_arr: arr[1],
        parameters: arr[2],
        triggers: arr[3],
        triggers_msg: arr[7]
    }
    save(JSON.stringify(json));
});

function open(callback) {
    var input = document.createElement("input");
    input.style.visibility = "hidden";
    input.setAttribute("type", "file");
    input.id = "browse";
    input.onclick = function(e) {
        e.cancelBubble = true;
        e.stopPropagation();
    }
    input.onchange = function() {
        var file = input.files[0];
        var reader = new FileReader();
        reader.onload = function(evt) {
            callback(evt.target.result);
            document.body.removeChild(input);
        }
        reader.readAsText(file);
    }
    document.body.appendChild(input);
    input.click();
}

function loadMap(s) {
    s = s.split("\r\n").join("\\r\\n");
    var data = {maps: []};
    data.maps[0] = JSON.parse(s);
    ed.map_loader.parse_data(data);
}

function save(json) {
    var blob = new Blob([json], {
        type: 'application/json'
    });

    var url = URL.createObjectURL(blob);
    var a = document.createElement('a');
    document.body.appendChild(a);
    a.download = 'filename.json';
    a.href = url;
    a.click();

    document.body.removeChild(a);
    URL.revokeObjectURL(url);
}