全栈修炼

# 前端常用的 60 余种工具方法

# 1.邮箱

export const isEmail = s => {
  return /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+((.[a-zA-Z0-9_-]{2,3}){1,2})$/.test(s);
};

# 2.手机号码

export const isMobile = s => {
  return /^1[0-9]{10}\$/.test(s);
};

# 3.电话号码

export const isPhone = s => {
  return /^([0-9]{3,4}-)?[0-9]{7,8}\$/.test(s);
};

# 4.是否 url 地址

export const isURL = s => {
  return /^http[s]?:\/\/.\*/.test(s);
};

# 5.是否字符串

export const isString = o => {
  return Object.prototype.toString.call(o).slice(8, -1) === 'String';
};

# 6.是否数字

export const isNumber = o => {
  return Object.prototype.toString.call(o).slice(8, -1) === 'Number';
};

# 7.是否 boolean

export const isBoolean = o => {
  return Object.prototype.toString.call(o).slice(8, -1) === 'Boolean';
};

# 8.是否函数

export const isFunction = o => {
  return Object.prototype.toString.call(o).slice(8, -1) === 'Function';
};

# 9.是否为 null

export const isNull = o => {
  return Object.prototype.toString.call(o).slice(8, -1) === 'Null';
};

# 10.是否 undefined

export const isUndefined = o => {
  return Object.prototype.toString.call(o).slice(8, -1) === 'Undefined';
};

# 11.是否对象

export const isObj = o => {
  return Object.prototype.toString.call(o).slice(8, -1) === 'Object';
};

# 12.是否数组

export const isArray = o => {
  return Object.prototype.toString.call(o).slice(8, -1) === 'Array';
};

# 13.是否时间

export const isDate = o => {
  return Object.prototype.toString.call(o).slice(8, -1) === 'Date';
};

# 14.是否正则

export const isRegExp = o => {
  return Object.prototype.toString.call(o).slice(8, -1) === 'RegExp';
};

# 15.是否错误对象

export const isError = o => {
  return Object.prototype.toString.call(o).slice(8, -1) === 'Error';
};

# 16.是否 Symbol 函数

export const isSymbol = o => {
  return Object.prototype.toString.call(o).slice(8, -1) === 'Symbol';
};

# 17.是否 Promise 对象

export const isPromise = o => {
  return Object.prototype.toString.call(o).slice(8, -1) === 'Promise';
};

# 18.是否 Set 对象

export const isSet = o => {
  return Object.prototype.toString.call(o).slice(8, -1) === 'Set';
};
export const ua = navigator.userAgent.toLowerCase();

# 19.是否是微信浏览器

export const isWeiXin = () => {
  return ua.match(/microMessenger/i) == 'micromessenger';
};

# 20.是否是移动端

export const isDeviceMobile = () => {
  return /android|webos|iphone|ipod|balckberry/i.test(ua);
};

# 21.是否是 QQ 浏览器

export const isQQBrowser = () => {
  return !!ua.match(/mqqbrowser|qzone|qqbrowser|qbwebviewtype/i);
};

# 22.是否是爬虫

export const isSpider = () => {
  return /adsbot|googlebot|bingbot|msnbot|yandexbot|baidubot|robot|careerbot|seznambot|bot|baiduspider|jikespider|symantecspider|scannerlwebcrawler|crawler|360spider|sosospider|sogou web sprider|sogou orion spider/.test(
    ua
  );
};

# 23.是否 ios

export const isIos = () => {
  var u = navigator.userAgent;
  if (u.indexOf('Android') > -1 || u.indexOf('Linux') > -1) {
    //安卓手机
    return false;
  } else if (u.indexOf('iPhone') > -1) {
    //苹果手机
    return true;
  } else if (u.indexOf('iPad') > -1) {
    //iPad
    return false;
  } else if (u.indexOf('Windows Phone') > -1) {
    //winphone 手机
    return false;
  } else {
    return false;
  }
};

# 24.是否为 PC 端

export const isPC = () => {
  var userAgentInfo = navigator.userAgent;
  var Agents = ['Android', 'iPhone', 'SymbianOS', 'Windows Phone', 'iPad', 'iPod'];
  var flag = true;
  for (var v = 0; v < Agents.length; v++) {
    if (userAgentInfo.indexOf(Agents[v]) > 0) {
      flag = false;
      break;
    }
  }
  return flag;
};

# 25.去除 html 标签

export const removeHtmltag = str => {
  return str.replace(/<[^>]+>/g, '');
};

# 26.获取 url 参数

export const getQueryString = name => {
  const reg = new RegExp('(^|&)' + name + '=([^&]*)(&|$)', 'i');
  const search = window.location.search.split('?')[1] || '';
  const r = search.match(reg) || [];
  return r[2];
};

# 27.动态引入 js

export const injectScript = src => {
  const s = document.createElement('script');
  s.type = 'text/javascript';
  s.async = true;
  s.src = src;
  const t = document.getElementsByTagName('script')[0];
  t.parentNode.insertBefore(s, t);
};

# 28.根据 url 地址下载

export const download = url => {
  var isChrome = navigator.userAgent.toLowerCase().indexOf('chrome') > -1;
  var isSafari = navigator.userAgent.toLowerCase().indexOf('safari') > -1;
  if (isChrome || isSafari) {
    var link = document.createElement('a');
    link.href = url;
    if (link.download !== undefined) {
      var fileName = url.substring(url.lastIndexOf('/') + 1, url.length);
      link.download = fileName;
    }
    if (document.createEvent) {
      var e = document.createEvent('MouseEvents');
      e.initEvent('click', true, true);
      link.dispatchEvent(e);
      return true;
    }
  }
  if (url.indexOf('?') === -1) {
    url += '?download';
  }
  window.open(url, '_self');
  return true;
};

# 29.el 是否包含某个 class

export const hasClass = (el, className) => {
  let reg = new RegExp('(^|\\s)' + className + '(\\s|$)');
  return reg.test(el.className);
};

# 30.el 添加某个 class

export const addClass = (el, className) => {
  if (hasClass(el, className)) {
    return;
  }
  let newClass = el.className.split(' ');
  newClass.push(className);
  el.className = newClass.join(' ');
};

# 31.el 去除某个 class

export const removeClass = (el, className) => {
  if (!hasClass(el, className)) {
    return;
  }
  let reg = new RegExp('(^|\\s)' + className + '(\\s|$)', 'g');
  el.className = el.className.replace(reg, ' ');
};

# 32.获取滚动的坐标

export const getScrollPosition = (el = window) => ({
  x: el.pageXOffset !== undefined ? el.pageXOffset : el.scrollLeft,
  y: el.pageYOffset !== undefined ? el.pageYOffset : el.scrollTop
});

# 33.滚动到顶部

export const scrollToTop = () => {
  const c = document.documentElement.scrollTop || document.body.scrollTop;
  if (c > 0) {
    window.requestAnimationFrame(scrollToTop);
    window.scrollTo(0, c - c / 8);
  }
};

# 34.el 是否在视口范围内

export const elementIsVisibleInViewport = (el, partiallyVisible = false) => {
  const { top, left, bottom, right } = el.getBoundingClientRect();
  const { innerHeight, innerWidth } = window;
  return partiallyVisible
    ? ((top > 0 && top < innerHeight) || (bottom > 0 && bottom < innerHeight)) &&
        ((left > 0 && left < innerWidth) || (right > 0 && right < innerWidth))
    : top >= 0 && left >= 0 && bottom <= innerHeight && right <= innerWidth;
};

# 35.洗牌算法随机

export const shuffle = (arr) => {
  var result = [],
  random;
  while (arr.length > 0) {
    random = Math.floor(Math.random() \* arr.length);
    result.push(arr[random]);
    arr.splice(random, 1);
  }
  return result;
}

# 36.拦截粘贴板

export const copyTextToClipboard = value => {
  var textArea = document.createElement('textarea');
  textArea.style.background = 'transparent';
  textArea.value = value;
  document.body.appendChild(textArea);
  textArea.select();
  try {
    var successful = document.execCommand('copy');
  } catch (err) {
    console.log('Oops, unable to copy');
  }
  document.body.removeChild(textArea);
};

# 37.判断类型集合

export const checkStr = (str, type) => {
  switch (type) {
    case 'phone': //手机号码
      return /^1[3|4|5|6|7|8|9][0-9]{9}$/.test(str);
    case 'tel': //座机
      return /^(0\d{2,3}-\d{7,8})(-\d{1,4})?$/.test(str);
    case 'card': //身份证
      return /(^\d{15}$)|(^\d{18}$)|(^\d{17}(\d|X|x)$)/.test(str);
    case 'pwd': //密码以字母开头，长度在6~18之间，只能包含字母、数字和下划线
      return /^[a-zA-Z]\w{5,17}$/.test(str);
    case 'postal': //邮政编码
      return /[1-9]\d{5}(?!\d)/.test(str);
    case 'QQ': //QQ 号
      return /^[1-9][0-9]{4,9}$/.test(str);
    case 'email': //邮箱
      return /^[\w-]+(\.[\w-]+)*@[\w-]+(\.[\w-]+)+$/.test(str);
    case 'money': //金额(小数点 2 位)
      return /^\d*(?:\.\d{0,2})?\$/.test(str);
    case 'URL': //网址
      return /(http|ftp|https):\/\/[\w\-_]+(\.[\w\-_]+)+([\w\-\.,@?^=%&:/~\+#]*[\w\-\@?^=%&/~\+#])?/.test(
        str
      );
    case 'IP': //IP
      return /((?:(?:25[0-5]|2[0-4]\\d|[01]?\\d?\\d)\\.){3}(?:25[0-5]|2[0-4]\\d|[01]?\\d?\\d))/.test(
        str
      );
    case 'date': //日期时间
      return (
        /^(\d{4})\-(\d{2})\-(\d{2}) (\d{2})(?:\:\d{2}|:(\d{2}):(\d{2}))$/.test(str) ||
        /^(\d{4})\-(\d{2})\-(\d{2})$/.test(str)
      );
    case 'number': //数字
      return /^[0-9]$/.test(str);
    case 'english': //英文
      return /^[a-zA-Z]+$/.test(str);
    case 'chinese': //中文
      return /^[\\u4E00-\\u9FA5]+$/.test(str);
    case 'lower': //小写
      return /^[a-z]+$/.test(str);
    case 'upper': //大写
      return /^[A-Z]+\$/.test(str);
    case 'HTML': //HTML 标记
      return /<("[^"]_"|'[^']_'|[^'">])\*>/.test(str);
    default:
      return true;
  }
};

# 38.严格的身份证校验

export const isCardID = sId => {
  if (!/(^\d{15}$)|(^\d{17}(\d|X|x)$)/.test(sId)) {
    console.log('你输入的身份证长度或格式错误');
    return false;
  }
  //身份证城市
  var aCity = {
    11: '北京',
    12: '天津',
    13: '河北',
    14: '山西',
    15: '内蒙古',
    21: '辽宁',
    22: '吉林',
    23: '黑龙江',
    31: '上海',
    32: '江苏',
    33: '浙江',
    34: '安徽',
    35: '福建',
    36: '江西',
    37: '山东',
    41: '河南',
    42: '湖北',
    43: '湖南',
    44: '广东',
    45: '广西',
    46: '海南',
    50: '重庆',
    51: '四川',
    52: '贵州',
    53: '云南',
    54: '西藏',
    61: '陕西',
    62: '甘肃',
    63: '青海',
    64: '宁夏',
    65: '新疆',
    71: '台湾',
    81: '香港',
    82: '澳门',
    91: '国外'
  };
  if (!aCity[parseInt(sId.substr(0, 2))]) {
    console.log('你的身份证地区非法');
    return false;
  }

  // 出生日期验证
  var sBirthday = (
      sId.substr(6, 4) +
      '-' +
      Number(sId.substr(10, 2)) +
      '-' +
      Number(sId.substr(12, 2))
    ).replace(/-/g, '/'),
    d = new Date(sBirthday);
  if (sBirthday != d.getFullYear() + '/' + (d.getMonth() + 1) + '/' + d.getDate()) {
    console.log('身份证上的出生日期非法');
    return false;
  }

  // 身份证号码校验
  var sum = 0,
    weights = [7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2],
    codes = '10X98765432';
  for (var i = 0; i < sId.length - 1; i++) {
    sum += sId[i] * weights[i];
  }
  var last = codes[sum % 11]; //计算出来的最后一位身份证号码
  if (sId[sId.length - 1] != last) {
    console.log('你输入的身份证号非法');
    return false;
  }

  return true;
};

# 39.随机数范围

export const random = (min, max) => {
  if (arguments.length === 2) {
    return Math.floor(min + Math.random() \* ((max + 1) - min))
  } else {
    return null;
  }
}

# 40.将阿拉伯数字翻译成中文的大写数字

export const numberToChinese = num => {
  var AA = new Array('零', '一', '二', '三', '四', '五', '六', '七', '八', '九', '十');
  var BB = new Array('', '十', '百', '仟', '萬', '億', '点', '');
  var a = ('' + num).replace(/(^0\*)/g, '').split('.'),
    k = 0,
    re = '';
  for (var i = a[0].length - 1; i >= 0; i--) {
    switch (k) {
      case 0:
        re = BB[7] + re;
        break;
      case 4:
        if (!new RegExp('0{4}//d{' + (a[0].length - i - 1) + '}$').test(a[0])) re = BB[4] + re;
        break;
      case 8:
        re = BB[5] + re;
        BB[7] = BB[5];
        k = 0;
        break;
    }
    if (k % 4 == 2 && a[0].charAt(i + 2) != 0 && a[0].charAt(i + 1) == 0) re = AA[0] + re;
    if (a[0].charAt(i) != 0) re = AA[a[0].charAt(i)] + BB[k % 4] + re;
    k++;
  }

  if (a.length > 1) {
    // 加上小数部分(如果有小数部分)
    re += BB[6];
    for (var i = 0; i < a[1].length; i++) re += AA[a[1].charAt(i)];
  }
  if (re == '一十') re = '十';
  if (re.match(/^一/) && re.length == 3) re = re.replace('一', '');
  return re;
};

# 41.将数字转换为大写金额

export const changeToChinese = Num => {
  //判断如果传递进来的不是字符的话转换为字符
  if (typeof Num == 'number') {
    Num = new String(Num);
  }
  Num = Num.replace(/,/g, ''); //替换 tomoney()中的“,”
  Num = Num.replace(/ /g, ''); //替换 tomoney()中的空格
  Num = Num.replace(/￥/g, ''); //替换掉可能出现的￥字符
  if (isNaN(Num)) {
    //验证输入的字符是否为数字
    //alert("请检查小写金额是否正确");
    return '';
  }
  //字符处理完毕后开始转换，采用前后两部分分别转换
  var part = String(Num).split('.');
  var newchar = '';
  //小数点前进行转化
  for (var i = part[0].length - 1; i >= 0; i--) {
    if (part[0].length > 10) {
      return '';
      //若数量超过拾亿单位，提示
    }
    var tmpnewchar = '';
    var perchar = part[0].charAt(i);
    switch (perchar) {
      case '0':
        tmpnewchar = '零' + tmpnewchar;
        break;
      case '1':
        tmpnewchar = '壹' + tmpnewchar;
        break;
      case '2':
        tmpnewchar = '贰' + tmpnewchar;
        break;
      case '3':
        tmpnewchar = '叁' + tmpnewchar;
        break;
      case '4':
        tmpnewchar = '肆' + tmpnewchar;
        break;
      case '5':
        tmpnewchar = '伍' + tmpnewchar;
        break;
      case '6':
        tmpnewchar = '陆' + tmpnewchar;
        break;
      case '7':
        tmpnewchar = '柒' + tmpnewchar;
        break;
      case '8':
        tmpnewchar = '捌' + tmpnewchar;
        break;
      case '9':
        tmpnewchar = '玖' + tmpnewchar;
        break;
    }
    switch (part[0].length - i - 1) {
      case 0:
        tmpnewchar = tmpnewchar + '元';
        break;
      case 1:
        if (perchar != 0) tmpnewchar = tmpnewchar + '拾';
        break;
      case 2:
        if (perchar != 0) tmpnewchar = tmpnewchar + '佰';
        break;
      case 3:
        if (perchar != 0) tmpnewchar = tmpnewchar + '仟';
        break;
      case 4:
        tmpnewchar = tmpnewchar + '万';
        break;
      case 5:
        if (perchar != 0) tmpnewchar = tmpnewchar + '拾';
        break;
      case 6:
        if (perchar != 0) tmpnewchar = tmpnewchar + '佰';
        break;
      case 7:
        if (perchar != 0) tmpnewchar = tmpnewchar + '仟';
        break;
      case 8:
        tmpnewchar = tmpnewchar + '亿';
        break;
      case 9:
        tmpnewchar = tmpnewchar + '拾';
        break;
    }
    var newchar = tmpnewchar + newchar;
  }
  //小数点之后进行转化
  if (Num.indexOf('.') != -1) {
    if (part[1].length > 2) {
      // alert("小数点之后只能保留两位,系统将自动截断");
      part[1] = part[1].substr(0, 2);
    }
    for (i = 0; i < part[1].length; i++) {
      tmpnewchar = '';
      perchar = part[1].charAt(i);
      switch (perchar) {
        case '0':
          tmpnewchar = '零' + tmpnewchar;
          break;
        case '1':
          tmpnewchar = '壹' + tmpnewchar;
          break;
        case '2':
          tmpnewchar = '贰' + tmpnewchar;
          break;
        case '3':
          tmpnewchar = '叁' + tmpnewchar;
          break;
        case '4':
          tmpnewchar = '肆' + tmpnewchar;
          break;
        case '5':
          tmpnewchar = '伍' + tmpnewchar;
          break;
        case '6':
          tmpnewchar = '陆' + tmpnewchar;
          break;
        case '7':
          tmpnewchar = '柒' + tmpnewchar;
          break;
        case '8':
          tmpnewchar = '捌' + tmpnewchar;
          break;
        case '9':
          tmpnewchar = '玖' + tmpnewchar;
          break;
      }
      if (i == 0) tmpnewchar = tmpnewchar + '角';
      if (i == 1) tmpnewchar = tmpnewchar + '分';
      newchar = newchar + tmpnewchar;
    }
  }
  //替换所有无用汉字
  while (newchar.search('零零') != -1) newchar = newchar.replace('零零', '零');
  newchar = newchar.replace('零亿', '亿');
  newchar = newchar.replace('亿万', '亿');
  newchar = newchar.replace('零万', '万');
  newchar = newchar.replace('零元', '元');
  newchar = newchar.replace('零角', '');
  newchar = newchar.replace('零分', '');
  if (newchar.charAt(newchar.length - 1) == '元') {
    newchar = newchar + '整';
  }
  return newchar;
};

# 42.判断一个元素是否在数组中

export const contains = (arr, val) => {
  return arr.indexOf(val) != -1 ? true : false;
};

# 43.数组排序，{type} 1：从小到大 2：从大到小 3：随机

export const sort = (arr, type = 1) => {
  return arr.sort((a, b) => {
    switch (type) {
      case 1:
        return a - b;
      case 2:
        return b - a;
      case 3:
        return Math.random() - 0.5;
      default:
        return arr;
    }
  });
};

# 44.去重

export const unique = arr => {
  if (Array.hasOwnProperty('from')) {
    return Array.from(new Set(arr));
  } else {
    var n = {},
      r = [];
    for (var i = 0; i < arr.length; i++) {
      if (!n[arr[i]]) {
        n[arr[i]] = true;
        r.push(arr[i]);
      }
    }
    return r;
  }
};

# 45.求两个集合的并集

export const union = (a, b) => {
  var newArr = a.concat(b);
  return this.unique(newArr);
};

# 46.求两个集合的交集

export const intersect = (a, b) => {
  var \_this = this;
  a = this.unique(a);
  return this.map(a, function(o) {
    return \_this.contains(b, o) ? o : null;
  });
};

# 47.删除其中一个元素

export const remove = (arr, ele) => {
  var index = arr.indexOf(ele);
  if (index > -1) {
    arr.splice(index, 1);
  }
  return arr;
};

# 48.将类数组转换为数组

export const formArray = ary => {
  var arr = [];
  if (Array.isArray(ary)) {
    arr = ary;
  } else {
    arr = Array.prototype.slice.call(ary);
  }
  return arr;
};

# 49.最大值

export const max = arr => {
  return Math.max.apply(null, arr);
};

# 50.最小值

export const min = arr => {
  return Math.min.apply(null, arr);
};

# 51.求和

export const sum = arr => {
  return arr.reduce((pre, cur) => {
    return pre + cur;
  });
};

# 52.平均值

export const average = arr => {
  return this.sum(arr) / arr.length;
};

# 53.去除空格,type: 1-所有空格 2-前后空格 3-前空格 4-后空格

export const trim = (str, type) => {
  type = type || 1;
  switch (type) {
    case 1:
      return str.replace(/\s+/g, '');
    case 2:
      return str.replace(/(^\s*)|(\s*$)/g, '');
    case 3:
      return str.replace(/(^\s*)/g, '');
    case 4:
      return str.replace(/(\s*$)/g, '');
    default:
      return str;
  }
};

# 54.字符转换，type: 1:首字母大写 2：首字母小写 3：大小写转换 4：全部大写 5：全部小写

export const changeCase = (str, type) => {
  type = type || 4;
  switch (type) {
    case 1:
      return str.replace(/\b\w+\b/g, function(word) {
        return word.substring(0, 1).toUpperCase() + word.substring(1).toLowerCase();
      });
    case 2:
      return str.replace(/\b\w+\b/g, function(word) {
        return word.substring(0, 1).toLowerCase() + word.substring(1).toUpperCase();
      });
    case 3:
      return str
        .split('')
        .map(function(word) {
          if (/[a-z]/.test(word)) {
            return word.toUpperCase();
          } else {
            return word.toLowerCase();
          }
        })
        .join('');
    case 4:
      return str.toUpperCase();
    case 5:
      return str.toLowerCase();
    default:
      return str;
  }
};

# 55.检测密码强度

export const checkPwd = str => {
  var Lv = 0;
  if (str.length < 6) {
    return Lv;
  }
  if (/[0-9]/.test(str)) {
    Lv++;
  }
  if (/[a-z]/.test(str)) {
    Lv++;
  }
  if (/[A-Z]/.test(str)) {
    Lv++;
  }
  if (/[\.|-|_]/.test(str)) {
    Lv++;
  }
  return Lv;
};

# 56.函数节流器

export const debouncer = (fn, time, interval = 200) => {
  if (time - (window.debounceTimestamp || 0) > interval) {
    fn && fn();
    window.debounceTimestamp = time;
  }
};

# 57.在字符串中插入新字符串

export const insertStr = (soure, index, newStr) => {
  var str = soure.slice(0, index) + newStr + soure.slice(index);
  return str;
};

# 58.判断两个对象是否键值相同

export const isObjectEqual = (a, b) => {
  var aProps = Object.getOwnPropertyNames(a);
  var bProps = Object.getOwnPropertyNames(b);

  if (aProps.length !== bProps.length) {
    return false;
  }

  for (var i = 0; i < aProps.length; i++) {
    var propName = aProps[i];

    if (a[propName] !== b[propName]) {
      return false;
    }
  }
  return true;
};

# 59.16 进制颜色转 RGBRGBA 字符串

export const colorToRGB = (val, opa) => {
  var pattern = /^(#?)[a-fA-F0-9]{6}$/; //16进制颜色值校验规则
  var isOpa = typeof opa == 'number'; //判断是否有设置不透明度

  if (!pattern.test(val)) {
    //如果值不符合规则返回空字符
    return '';
  }

  var v = val.replace(/#/, ''); //如果有#号先去除#号
  var rgbArr = [];
  var rgbStr = '';

  for (var i = 0; i < 3; i++) {
    var item = v.substring(i * 2, i * 2 + 2);
    var num = parseInt(item, 16);
    rgbArr.push(num);
  }

  rgbStr = rgbArr.join();
  rgbStr = 'rgb' + (isOpa ? 'a' : '') + '(' + rgbStr + (isOpa ? ',' + opa : '') + ')';
  return rgbStr;
};

# 60.追加 url 参数

export const appendQuery = (url, key, value) => {
  var options = key;
  if (typeof options == 'string') {
    options = {};
    options[key] = value;
  }
  options = $.param(options);
  if (url.includes('?')) {
    url += '&' + options;
  } else {
    url += '?' + options;
  }
  return url;
};

# 最后

文中若有不准确或错误的地方，欢迎指出，有兴趣可以的关注下Github~

Last Updated: 2020/9/7 下午8:45:37

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