vantui-edit/es/power-scroll-view/utils.js

一套适用于Taro3及React的vantui组件库

import _toConsumableArray from "@babel/runtime/helpers/toConsumableArray";
import { createSelectorQuery } from '@tarojs/taro';

function selectorQuery(nodesRef) {
  if (!nodesRef || nodesRef.nodeName === 'root') {
    return createSelectorQuery().selectViewport();
  } else {
    return createSelectorQuery().select('#' + nodesRef.uid);
  }
}

export function scrollOffset(nodesRef) {
  return new Promise(function (resolve) {
    // 没有固定高度-- 就去拿page的高度
    if (process.env.TARO_ENV === 'h5') {
      var _nodesRef = nodesRef || document.documentElement || document.body;

      return resolve({
        scrollLeft: _nodesRef.scrollLeft,
        scrollTop: _nodesRef.scrollTop
      });
    }

    return selectorQuery(nodesRef).scrollOffset().exec(function (res) {
      resolve(res[0]);
    });
  });
}
export function boundingClientRect(nodesRef) {
  return new Promise(function (resolve) {
    if (process.env.TARO_ENV === 'h5') {
      var _nodesRef = nodesRef || document.documentElement || document.body;

      return resolve(_nodesRef.getBoundingClientRect());
    }

    return selectorQuery(nodesRef).boundingClientRect().exec(function (res) {
      resolve(res[0]);
    });
  });
}
export var stopPropagation = function stopPropagation(event) {
  return event.stopPropagation();
};
export function preventDefault(event, isStopPropagation) {
  /* istanbul ignore else */
  // if (typeof event?.cancelable !== 'boolean' || event?.cancelable) {
  // }
  event.preventDefault();

  if (isStopPropagation) {
    stopPropagation(event);
  }
}
export var debounce = function debounce(fn, timeout) {
  var handle = 0;
  var lastArgs = null;

  var ret = function ret() {
    for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {
      args[_key] = arguments[_key];
    }

    lastArgs = args;
    clearTimeout(handle);
    handle = setTimeout(function () {
      lastArgs = null;
      fn.apply(void 0, args);
    }, timeout);
  };

  ret.flush = function () {
    clearTimeout(handle);

    if (lastArgs) {
      var _lastArgs = lastArgs;
      lastArgs = null;
      return fn.apply(void 0, _toConsumableArray(_lastArgs));
    }
  }; // ret.cancel = () => {
  //   lastArgs = null
  //   clearTimeout(handle)
  // }


  return ret;
};