grab.js

const addCode = function(code) {
  try {
    console.log(`###添加特权码:${code}###`);
    document.querySelector("#privilege_val").value = code;
    sleep(400).then(() => {
      document.getElementsByClassName("privilege_sub")[0].click();
    });
  } catch (e) {
    console.log(e);
  }
};

sleep = ms => {
  return new Promise(resolve => setTimeout(resolve, ms));
};

const confirm = function() {
  console.log("###开始确认订单###");
  const url = chrome.runtime.getURL("user.json");
  fetch(url)
    .then(response => response.json()) //assuming file contains json
    .then(item => {
      console.log("###选择购票人###");
      document.getElementsByClassName("next-checkbox")[0].children[1].click(); //默认勾选首位购票人
      sleep(1000).then(() => {
        document.getElementsByClassName("express")[0].click(); // 选择自取
        sleep(2000).then(() => {
          if (document.title === "确认订单") {
            console.log("###选择购票人###");
            if (
              !document
                .getElementsByClassName("next-checkbox")[0]
                .classList.contains("checked")
            ) {
              document
                .getElementsByClassName("next-checkbox")[0]
                .children[1].click(); //默认勾选首位购票人
            }
            //document.getElementsByClassName('next-checkbox')[0].children[1].click() //默认勾选首位购票人
            sleep(500).then(() => {
              console.log("###确认购买###");
              document
                .getElementsByClassName("submit-wrapper")[0]
                .children[0].click();
            });
          }
        });
        //}
      });
    });
};

const grab = function() {
  const url = chrome.runtime.getURL("user.json");

  fetch(url)
    .then(response => response.json()) //assuming file contains json
    .then(item => {
      console.log(item);
      console.log("###开始抢票###");
      addCode(item.code);
      console.log(`###选择场次:${item.series}###`);
      document
        .getElementsByClassName("select_right_list_item")
        [item.series - 1].click();
      sleep(1000).then(() => {
        const button = document.getElementsByClassName("buybtn")[0];
        if (button.textContent === "即将开抢") {
          console.log("###抢票未开始，刷新页面###");
          setTimeout(() => {
            window.location.reload();
          }, 1000);
        } else {
          if (item.quantity === 2) {
            console.log("###增加一张票，选两张###");
            document
              .getElementsByClassName("cafe-c-input-number-handler-up")[0]
              .click();
            sleep(300).then(() => {
              console.log("###跳转到确认订单页面###");
              document.getElementsByClassName("buybtn")[0].click();
            });
          } else {
            console.log("###跳转到确认订单页面###");
            document.getElementsByClassName("buybtn")[0].click();
          }
        }
        sleep(1000).then(() => {
          if (document.title === "确认订单") {
            console.log("###确认订单###");
            confirm();
          }
        });
      });
    });
};

grab();