@ecip/ecip-web/src/utils/index.js

A magical vue admin. An out-of-box UI solution for enterprise applications. Newest development stack of vue. Lots of awesome features

/**
 * Created by PanJiaChen on 16/11/18.
 */
import Vue from "vue";
import request from "./request";
import { Message } from "element-ui";
/**
 * 表单对象赋值:
 * 对目标对象存在且源对象同样存在的属性，全部覆盖；
 * 目标对象不存在但是源对象存在的属性， 全部丢弃；
 * 目标对象存在但是源对象不存在的属性，如果是字符串赋值为空串，其余类型赋值为undefined
 */
export function recover(target, source) {
  if (target === undefined || target === null) {
    throw new TypeError("Cannot convert first argument to object");
  }
  var to = Object(target);
  if (source === undefined || source === null) {
    return to;
  }
  var keysArray = Object.keys(Object(target));
  for (
    var nextIndex = 0, len = keysArray.length;
    nextIndex < len;
    nextIndex++
  ) {
    var nextKey = keysArray[nextIndex];
    var desc = Object.getOwnPropertyDescriptor(target, nextKey);
    if (desc !== undefined && desc.enumerable) {
      if (to.hasOwnProperty(nextKey)) {
        if (to[nextKey] instanceof Array) {
          to[nextKey] = source[nextKey];
        } else if (to[nextKey] instanceof Object) {
          recover(to[nextKey], source[nextKey]);
        } else if (source[nextKey] !== undefined) {
          to[nextKey] = source[nextKey];
        } else if (typeof to[nextKey] === "string") {
          to[nextKey] = "";
        } else {
          to[nextKey] = undefined;
        }
      }
    }
  }
  return to;
}

/**
 * Parse the time to string
 * @param {(Object|string|number)} time
 * @param {string} cFormat
 * @returns {string | null}
 */
export function parseTime(time, cFormat) {
  if (arguments.length === 0) {
    return null;
  }
  const format = cFormat || "{y}-{m}-{d} {h}:{i}:{s}";
  let date;
  if (typeof time === "object") {
    date = time;
  } else {
    if (typeof time === "string") {
      if (/^[0-9]+$/.test(time)) {
        time = parseInt(time);
      } else {
        // support safari
        // https://stackoverflow.com/questions/4310953/invalid-date-in-safari
        time = time.replace(new RegExp(/-/gm), "/");
      }
    }
    if (typeof time === "number" && time.toString().length === 10) {
      time = time * 1000;
    }
    date = new Date(time);
  }
  const formatObj = {
    y: date.getFullYear(),
    m: date.getMonth() + 1,
    d: date.getDate(),
    h: date.getHours(),
    i: date.getMinutes(),
    s: date.getSeconds(),
    a: date.getDay(),
  };
  const time_str = format.replace(/{([ymdhisa])+}/g, (result, key) => {
    const value = formatObj[key];
    // Note: getDay() returns 0 on Sunday
    if (key === "a") {
      return ["日", "一", "二", "三", "四", "五", "六"][value];
    }
    return value.toString().padStart(2, "0");
  });
  return time_str;
}

/**
 * @param {number} time
 * @param {string} option
 * @returns {string}
 */
export function formatTime(time, option) {
  if (("" + time).length === 10) {
    time = parseInt(time) * 1000;
  } else {
    time = +time;
  }
  const d = new Date(time);
  const now = Date.now();

  const diff = (now - d) / 1000;

  if (diff < 30) {
    return "刚刚";
  } else if (diff < 3600) {
    // less 1 hour
    return Math.ceil(diff / 60) + "分钟前";
  } else if (diff < 3600 * 24) {
    return Math.ceil(diff / 3600) + "小时前";
  } else if (diff < 3600 * 24 * 2) {
    return "1天前";
  }
  if (option) {
    return parseTime(time, option);
  } else {
    return (
      d.getMonth() +
      1 +
      "月" +
      d.getDate() +
      "日" +
      d.getHours() +
      "时" +
      d.getMinutes() +
      "分"
    );
  }
}

/**
 * @param {number} mss
 * @returns {string}
 */
export function formatDuration(mss) {
  const days = parseInt(mss / (1000 * 60 * 60 * 24));
  const hours = parseInt((mss % (1000 * 60 * 60 * 24)) / (1000 * 60 * 60));
  const minutes = parseInt((mss % (1000 * 60 * 60)) / (1000 * 60));
  const seconds = parseInt((mss % (1000 * 60)) / 1000);
  if (days > 0) {
    return days + "天" + hours + "小时" + minutes + "分钟" + seconds + "秒";
  } else if (days <= 0 && hours > 0) {
    return hours + "小时" + minutes + "分钟" + seconds + "秒";
  } else if (days <= 0 && hours <= 0 && minutes > 0) {
    return minutes + "分钟" + seconds + "秒";
  } else {
    return seconds + "秒";
  }
}

/**
 * @param {string} url
 * @returns {Object}
 */
export function getQueryObject(url) {
  url = url == null ? window.location.href : url;
  const search = url.substring(url.lastIndexOf("?") + 1);
  const obj = {};
  const reg = /([^?&=]+)=([^?&=]*)/g;
  search.replace(reg, (rs, $1, $2) => {
    const name = decodeURIComponent($1);
    let val = decodeURIComponent($2);
    val = String(val);
    obj[name] = val;
    return rs;
  });
  return obj;
}

/**
 * @param {string} input value
 * @returns {number} output value
 */
export function byteLength(str) {
  // returns the byte length of an utf8 string
  let s = str.length;
  for (var i = str.length - 1; i >= 0; i--) {
    const code = str.charCodeAt(i);
    if (code > 0x7f && code <= 0x7ff) s++;
    else if (code > 0x7ff && code <= 0xffff) s += 2;
    if (code >= 0xdc00 && code <= 0xdfff) i--;
  }
  return s;
}

/**
 * @param {Array} actual
 * @returns {Array}
 */
export function cleanArray(actual) {
  const newArray = [];
  for (let i = 0; i < actual.length; i++) {
    if (actual[i]) {
      newArray.push(actual[i]);
    }
  }
  return newArray;
}

/**
 * @param {Object} json
 * @returns {Array}
 */
export function param(json) {
  if (!json) return "";
  return cleanArray(
    Object.keys(json).map((key) => {
      if (json[key] === undefined) return "";
      return encodeURIComponent(key) + "=" + encodeURIComponent(json[key]);
    })
  ).join("&");
}

/**
 * @param {string} url
 * @returns {Object}
 */
export function param2Obj(url) {
  const search = url.split("?")[1];
  if (!search) {
    return {};
  }
  return JSON.parse(
    '{"' +
      decodeURIComponent(search)
        .replace(/"/g, '\\"')
        .replace(/&/g, '","')
        .replace(/=/g, '":"')
        .replace(/\+/g, " ") +
      '"}'
  );
}

/**
 * @param {string} val
 * @returns {string}
 */
export function html2Text(val) {
  const div = document.createElement("div");
  div.innerHTML = val;
  return div.textContent || div.innerText;
}

/**
 * Merges two objects, giving the last one precedence
 * @param {Object} target
 * @param {(Object|Array)} source
 * @returns {Object}
 */
export function objectMerge(target, source) {
  if (typeof target !== "object") {
    target = {};
  }
  if (Array.isArray(source)) {
    return source.slice();
  }
  Object.keys(source).forEach((property) => {
    const sourceProperty = source[property];
    if (typeof sourceProperty === "object") {
      target[property] = objectMerge(target[property], sourceProperty);
    } else {
      target[property] = sourceProperty;
    }
  });
  return target;
}

/**
 * @param {HTMLElement} element
 * @param {string} className
 */
export function toggleClass(element, className) {
  if (!element || !className) {
    return;
  }
  let classString = element.className;
  const nameIndex = classString.indexOf(className);
  if (nameIndex === -1) {
    classString += "" + className;
  } else {
    classString =
      classString.substr(0, nameIndex) +
      classString.substr(nameIndex + className.length);
  }
  element.className = classString;
}

/**
 * @param {string} type
 * @returns {Date}
 */
export function getTime(type) {
  if (type === "start") {
    return new Date().getTime() - 3600 * 1000 * 24 * 90;
  } else {
    return new Date(new Date().toDateString());
  }
}

/**
 * @param {Function} func
 * @param {number} wait
 * @param {boolean} immediate
 * @return {*}
 */
export function debounce(func, wait, immediate) {
  let timeout, args, context, timestamp, result;
  const later = function () {
    // 据上一次触发时间间隔
    const last = +new Date() - timestamp;

    // 上次被包装函数被调用时间间隔 last 小于设定时间间隔 wait
    if (last < wait && last > 0) {
      timeout = setTimeout(later, wait - last);
    } else {
      timeout = null;
      // 如果设定为immediate===true，因为开始边界已经调用过了此处无需调用
      if (!immediate) {
        result = func.apply(context, args);
        if (!timeout) context = args = null;
      }
    }
  };
  return function (...args) {
    context = this;
    timestamp = +new Date();
    const callNow = immediate && !timeout;
    // 如果延时不存在，重新设定延时
    if (!timeout) timeout = setTimeout(later, wait);
    if (callNow) {
      result = func.apply(context, args);
      context = args = null;
    }
    return result;
  };
}

/**
 * This is just a simple version of deep copy
 * Has a lot of edge cases bug
 * If you want to use a perfect deep copy, use lodash's _.cloneDeep
 * @param {Object} source
 * @returns {Object}
 */
export function deepClone(source) {
  if (!source && typeof source !== "object") {
    return undefined;
    // throw new Error('error arguments', 'deepClone')
  }
  const targetObj = source.constructor === Array ? [] : {};
  Object.keys(source).forEach((keys) => {
    if (source[keys] && typeof source[keys] === "object") {
      targetObj[keys] = deepClone(source[keys]);
    } else {
      targetObj[keys] = source[keys];
    }
  });
  return targetObj;
}

export function cloneDeep(target, source) {
  // 研究多参数 ...source 的实现
  // if (!target && typeof target !== 'object') {
  //   throw new Error('error target arguments', 'deepClone')
  // }
  if (!source && typeof source !== "object") {
    throw new Error("error source arguments", "deepClone");
  }
  // const targetObj = source.constructor === Array ? [] : {}
  Object.keys(source).forEach((keys) => {
    if (source[keys] && typeof source[keys] === "object") {
      if (!target[keys]) {
        Vue.set(target, keys, source[keys].constructor === Array ? [] : {});
      }
      cloneDeep(target[keys], source[keys]);
    } else {
      target[keys] = source[keys];
    }
  });
  return target;
}

/**
 * @param {Array} arr
 * @returns {Array}
 */
export function uniqueArr(arr) {
  return Array.from(new Set(arr));
}

/**
 * @returns {string}
 */
export function createUniqueString() {
  const timestamp = +new Date() + "";
  const randomNum = parseInt((1 + Math.random()) * 65536) + "";
  return (+(randomNum + timestamp)).toString(32);
}

/**
 * Check if an element has a class
 * @param {HTMLElement} elm
 * @param {string} cls
 * @returns {boolean}
 */
export function hasClass(ele, cls) {
  return !!ele.className.match(new RegExp("(\\s|^)" + cls + "(\\s|$)"));
}

/**
 * Add class to element
 * @param {HTMLElement} elm
 * @param {string} cls
 */
export function addClass(ele, cls) {
  if (!hasClass(ele, cls)) ele.className += " " + cls;
}

/**
 * Remove class from element
 * @param {HTMLElement} elm
 * @param {string} cls
 */
export function removeClass(ele, cls) {
  if (hasClass(ele, cls)) {
    const reg = new RegExp("(\\s|^)" + cls + "(\\s|$)");
    ele.className = ele.className.replace(reg, " ");
  }
}

var storageOptions;

export function initStorage(options) {
  storageOptions = {};
  storageOptions.namespace = options.namespace || storageOptions.namespace;
  storageOptions.storage = options.storage || storageOptions.storage;
  storageOptions.name = options.name || storageOptions.name;
}

export const filterNode = (value, data, node, field) => {
  // 如果什么都没填就直接返回
  if (!value) return true;
  // 如果传入的value和data中的label相同说明是匹配到了
  if (data[field].indexOf(value) !== -1) {
    return true;
  }
  // 否则要去判断它是不是选中节点的子节点
  return checkBelongToChooseNode(value, data, node, field);
};

// 判断传入的节点是不是选中节点的子节点
export const checkBelongToChooseNode = (value, data, node, field) => {
  const level = node.level;
  // 如果传入的节点本身就是一级节点就不用校验了
  if (level === 1) {
    return false;
  }
  // 先取当前节点的父节点
  let parentData = node.parent;
  // 遍历当前节点的父节点
  let index = 0;
  while (index < level - 1) {
    // 如果匹配到直接返回
    if (parentData.data[field].indexOf(value) !== -1) {
      return true;
    }
    // 否则的话再往上一层做匹配
    parentData = parentData.parent;
    index++;
  }
  // 没匹配到返回false
  return false;
};

export function getStorageVal(key, defaultVal) {
  const namespace = storageOptions.namespace; // todo: 完善从settings.js里获取
  const storage = storageOptions.storage;

  if (storage === "local") {
    return localStorage.getItem(`${namespace}${key}`) || defaultVal;
  } else if (storage === "session") {
    return sessionStorage.getItem(`${namespace}${key}`) || defaultVal;
  }
  return "";
}

export function download(option) {
  return new Promise((resolve, reject) => {
    const options = Object.assign(
      { method: "get", responseType: "blob" },
      option
    );
    request(options)
      .then((response) => {
        if (!response) {
          reject("下载失败");
          return;
        }
        // const link = document.createElement('a')
        // link.href = window.URL.createObjectURL(new Blob([response.data]))
        // link.target = '_blank'
        // let filename = response.headers['content-disposition']
        // if (filename.indexOf('filename=') > -1) {
        //   filename = filename.split('filename=')[1]
        // }
        // link.download = decodeURI(filename)
        // // link.download = filename
        // document.body.appendChild(link)
        // link.click()
        // document.body.removeChild(link)
        let filename = response.headers["content-disposition"];
        if (!filename) {
          const fileReader = new FileReader();
          fileReader.readAsText(response.data, "utf-8");
          fileReader.onloadend = () => {
            const jsonData = JSON.parse(fileReader.result);
            Message({
              message: jsonData.message || "下载失败",
              type: "error",
              duration: 5 * 1000,
            });
          };
          reject("下载失败");
          return;
        }
        if (filename.indexOf("filename=") > -1) {
          filename = filename.split("filename=")[1];
        }
        if (filename.indexOf("%") > -1) {
          filename = decodeURI(filename);
        } else {
          try {
            filename = decodeURIComponent(escape(filename));
          } catch (error) {
            filename = decodeURI(filename);
          }
        }
        if (window.navigator && window.navigator.msSaveOrOpenBlob) {
          // IE
          window.navigator.msSaveOrOpenBlob(
            new Blob([response.data]),
            filename
          );
        } else {
          const objectUrl = (window.URL || window.webkitURL).createObjectURL(
            new Blob([response.data])
          );
          const downFile = document.createElement("a");
          downFile.style.display = "none";
          downFile.href = objectUrl;
          downFile.download = filename; // 下载后文件名
          document.body.appendChild(downFile);
          downFile.click();
          document.body.removeChild(downFile); // 下载完成移除元素
          // window.location.href = objectUrl
          window.URL.revokeObjectURL(objectUrl); // 只要映射存在，Blob就不能进行垃圾回收，因此一旦不再需要引用，就必须小心撤销URL，释放掉blob对象。
        }
        resolve("下载成功");
        // eslint-disable-next-line handle-callback-err
      })
      .catch((error) => {
        // console.log(error)
        Message({
          message: "下载失败",
          type: "error",
          duration: 5 * 1000,
        });
        reject("下载失败");
      });
  });
}

export function isUtf8(s) {
  const lastnames = ["ä", "å", "æ", "ç", "è", "é"];
  let count = 0;
  for (let i = 0; i < lastnames.length; i++) {
    count += s.split(lastnames[i]).length;
  }
  if (count > s.length / 5) {
    return true;
  } else {
    return false;
  }
}

export function escapeHTML(str) {
  if (!str) {
    return "";
  }
  str = "" + str;
  if (
    str.indexOf("&amp;") !== -1 ||
    str.indexOf("&lt;") !== -1 ||
    str.indexOf("&gt;") !== -1 ||
    str.indexOf("&quot;") !== -1 ||
    str.indexOf("&apos;") !== -1 ||
    str.indexOf("&#39;") !== -1
  ) {
    return str;
  }
  return str
    .replace(/&/g, "&amp;")
    .replace(/</g, "&lt;")
    .replace(/>/g, "&gt;")
    .replace(/"/g, "&quot;");
}
/**
 * @function unescapeHTML 还原html脚本 < > & " '
 * @param str -
 *            字符串
 */
export function unescapeHTML(str) {
  if (!str) {
    return "";
  }
  str = "" + str;
  return str
    .replace(/&lt;/g, "<")
    .replace(/&gt;/g, ">")
    .replace(/&amp;/g, "&")
    .replace(/&quot;/g, '"')
    .replace(/&#39;/g, "'")
    .replace(/&apos;/g, "'");
}

/**
 * @function changeZIndex 修改弹窗z-index
 *            字符串
 * @param className
 */
export function changeZIndex(className) {
  // 因为部分业务loading 页z-index 属性设置过大，现在需要在弹窗设置 class 再根据className 操作元素z-index
  try {
    setTimeout(() => {
      document.getElementsByClassName(
        className
      )[0].parentNode.style.zIndex = 9999999;
    }, 60);
  } catch (e) {
    console.error("找不到DOM父节点或className不是唯一：", e);
  }
}

/**
 * @function  router 路由变量赋值
 *            字符串
 * @param routerPath 'str'
 * @param obj {{}}
 */
export function changePathVariable(routerPath = "", obj = {}) {
  for (const key in obj) {
    routerPath = routerPath.replaceAll(key, obj[key]);
  }
  return routerPath;
}