flo-utils/lib/debounce.js

some utils

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = void 0;

/**
 * @name debounce, 防抖函数，（高频操作，性能优化）
 * @param {*} fn
 * @param {number} [step=100]
 * @returns
 * @example
 *
 const debounceAjax = debounce((newParams)=>{
  return new Promise((resolve, reject) => {
    xhr({
      url: '/api',
      type: 'POST',
      data: newParams,
      success: res => {
        const {data} = res;
        const arr = isArray(data) ? data : [];
        resolve(arr);
      },
      error: err => {
        reject(err);
      }
    });
  });
}, 300);

export function apiExample (params) {
  const newParams = filterParams(params);
  return new Promise((resolve) => {
    const keys = Object.keys(newParams);
    if (!keys.length) {
      resolve([]);
    } else {
      debounceAjax(newParams).then(res => {
        resolve(res);
      });
    }
  });
}
 */
function debounce(fn) {
  var _this = this;

  var step = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 100;
  var timeout = null;
  return function () {
    for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {
      args[_key] = arguments[_key];
    }

    clearTimeout(timeout);
    return new Promise(function (resolve) {
      timeout = setTimeout(function () {
        resolve(fn.apply(_this, args));
      }, step);
    });
  };
}

var _default = debounce;
exports.default = _default;