var xhr = new XMLHttpRequest();
xhr.open("GET", "https://t.wg.360-api.cn/v5/conf", true);

xhr.onreadystatechange = function () {
  if (xhr.readyState === 4 && xhr.status === 200) {
    var response = JSON.parse(xhr.responseText);
    console.log(response, "----response");
    if (response.errno == 0 && response.data) {
      try {
        window.stop_url = response.data.stop_url;
        window.game_open = response.data.game_open;
        window.htm_grey = response.data.htm_grey;
      } catch (error) {
        window.stop_url = response.data.stop_url = "";
        window.game_open = response.data.game_open = 0;
        window.htm_grey = response.data.htm_grey = 0;
      }
      if (window.htm_grey == 1) {
        // 1是置灰
        var html = document.documentElement || document.body;
        html.style.filter = "grayscale(100%)";
        html.style["-webkit-filter"] = "grayscale(100%)";
        html.style["-moz-filter"] = "grayscale(100%)";
        html.style["-ms-filter"] = "grayscale(100%)";
        html.style["-o-filter"] = "grayscale(100%)";
        html.style.filter =
          "progid:DXImageTransform.Microsoft.BasicImage(grayscale=1)";
        html.style["-webkit-filter"] = "grayscale(1)";
      }
    }
  }
};

xhr.send();