t-comm/lib/scroll-b612c517.js

专业、稳定、纯粹的工具库

'use strict';

var tslib_es6 = require('./tslib.es6-01322ba9.js');

function autoScroll(element, page, bottomTimes) {
  if (bottomTimes === void 0) {
    bottomTimes = 0;
  }
  return tslib_es6.__awaiter(this, void 0, void 0, function () {
    return tslib_es6.__generator(this, function (_a) {
      switch (_a.label) {
        case 0:
          return [4 /*yield*/, page.evaluate(function (_a) {
            var element = _a.element,
              bottomTimes = _a.bottomTimes;
            return new Promise(function (resolve) {
              var UNIT_DISTANCE = 100;
              var ele = document.querySelector(element);
              var totalHeight = 0;
              var curBottomTimes = 0;
              var lastScrollHeight = ele === null || ele === void 0 ? void 0 : ele.scrollHeight;
              var doScroll = function doScroll(ele) {
                totalHeight = ele.scrollTop + UNIT_DISTANCE;
                ele.scrollTop = totalHeight;
              };
              var timer = setInterval(function () {
                var scrollHeight = ele.scrollHeight;
                doScroll(ele);
                if (scrollHeight > lastScrollHeight) {
                  curBottomTimes += 1;
                  lastScrollHeight = scrollHeight;
                }
                console.log('[autoScroll] scrollHeight & totalHeight', scrollHeight, totalHeight);
                if (totalHeight >= scrollHeight || bottomTimes && curBottomTimes > bottomTimes) {
                  console.log('[autoScroll] end');
                  clearInterval(timer);
                  resolve(1);
                }
              }, 100);
            });
          }, {
            element: element,
            bottomTimes: bottomTimes
          })];
        case 1:
          _a.sent();
          return [2 /*return*/];
      }
    });
  });
}

var scroll = /*#__PURE__*/Object.freeze({
    __proto__: null,
    autoScroll: autoScroll
});

exports.autoScroll = autoScroll;
exports.scroll = scroll;