var json

    window.onload = function () {
        //本地json数据文件地址
        var url = "js/Plugin.json"
        var request = new XMLHttpRequest();
        request.open("get", url);
        request.send(null);
        request.onload = function () {
            if (request.status == 200) {
                json = JSON.parse(request.responseText);
                //调用json数据的方法
                showData(json);
            }
        }
    }

function showData(data) {
    console.log(data)
}