JS前端常用工具方法

客官°小女子只卖身不卖艺 2022-10-13 05:10 250阅读 0赞

![在这里插入图片描述][20210706133530309.gif_pic_center]

### 目录 ###

*  1. 邮箱
 *  2. 手机号码
 *  3. 电话号码
 *  4. URL地址
 *  5. 是否字符串
 *  6. 是否数字
 *  7. 是否Boolean
 *  8. 是否函数
 *  9. 是否为null
 *  10. 是否undefined
 *  11. 是否对象
 *  12. 是否数组
 *  13. 是否时间
 *  14. 是否正则
 *  15. 是否错误对象
 *  16. 是否Symbol函数
 *  17. 是否Promise对象
 *  18. 是否Set对象
 *  19. 是否是微信浏览器
 *  20. 是否是移动端
 *  21. 是否是QQ浏览器
 *  22. 是否是爬虫
 *  23. 是否ios
 *  24. 是否为PC端
 *  25. 去除html标签
 *  26. 获取url参数
 *  27. 动态引入js
 *  28. 根据url地址下载
 *  29. el是否包含某个class
 *  30. el添加某个class
 *  31. el去除某个class
 *  32. 获取滚动的坐标
 *  33. 滚动到顶部
 *  34. el是否在视口范围内
 *  35. 洗牌算法随机
 *  36. 劫持粘贴板
 *  37. 判断类型集合
 *  38. 严格的身份证校验
 *  39. 随机数范围
 *  40. 将阿拉伯数字翻译成中文的大写数字
 *  41. 将数字转换为大写金额
 *  42. 判断一个元素是否在数组中
 *  43. each 方法
 *  44. map 方法
 *  45. 数组排序
 *  46. 去重
 *  47. 求两个集合的并集
 *  48. 求两个集合的交集
 *  49. 删除其中一个元素
 *  50. 将类数组转换为数组的方法
 *  51. 最大值
 *  52. 最小值
 *  53. 求和
 *  54. 平均值
 *  55. 去除空格
 *  56. 字符转换
 *  57. 检测密码强度
 *  58. 函数节流器
 *  59. 在字符串中插入新字符串
 *  60. 判断两个对象是否键值相同
 *  61. 16进制颜色转RGB\\RGBA字符串
 *  62. 追加url参数
 *  63. 判断 a 数组是否包含 b 数组中
 *  64. 将数组分片
 *  65. 复制内容
 *  66. 生成UUID

--------------------

一个 Github 库：[https://github.com/hangjob/vue-admin/blob/master/src/utils/util.js][https_github.com_hangjob_vue-admin_blob_master_src_utils_util.js]

# 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. 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. 劫持粘贴板 #

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. each 方法 #

export const each = (arr, fn) => { 
       fn = fn || Function;
       var a = [];
       var args = Array.prototype.slice.call(arguments, 1);
       for (var i = 0; i < arr.length; i++) { 
           var res = fn.apply(arr, [arr[i], i].concat(args));
           if (res != null) a.push(res);
       }
    }

# 44. map 方法 #

export const map = (arr, fn, thisObj) => { 
       var scope = thisObj || window;
       var a = [];
       for (var i = 0, j = arr.length; i < j; ++i) { 
           var res = fn.call(scope, arr[i], i, this);
           if (res != null) a.push(res);
       }
       return a;
    }

# 45. 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;
           }
       })
    }

# 46. 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;
       }
    }

# 47. 求两个集合的并集 #

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

# 48. 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;
       });
    }

# 49. 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;
    }

# 50. 将类数组转换为数组的方法 #

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

# 51. 最大值 #

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

# 52. 最小值 #

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

# 53. 求和 #

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

# 54. 平均值 #

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

# 55. 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;
       }
    }

# 56. 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;
       }
    }

# 57. 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;
    }

# 58. 函数节流器 #

`fn` 需要执行的函数；`time` 时间戳；`interval` 间隔时间

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

# 59. 在字符串中插入新字符串 #

`soure` 源字符；`index` 插入字符的位置；`newStr` 需要插入的字符；

**返回值**：返回新生成的字符

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

# 60. 判断两个对象是否键值相同 #

`a` 第一个对象; `b` 第二个对象。相同返回`true`，否则返回`false`

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;
    }

# 61. 16进制颜色转RGB\\RGBA字符串 #

`val` 16进制颜色值； `opa` 不透明度，取值`0~1`；

**返回值**：转换后的`RGB`或`RGBA`颜色值

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;
    }

# 62. 追加url参数 #

`url`：`url`参数；`key`：名字或者对象；`value`：值；返回新的`url`

用法示例：

appendQuery('lechebang.com', 'id', 3);

appendQuery('lechebang.com?key=value', {  cityId: 2, cityName: '北京'});

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;
    }

# 63. 判断 a 数组是否包含 b 数组中 #

export const getArrRepeat = (arr1,arr2) =>{ 
       return arr1.filter((item,index) =>{ 
           return arr2.includes(item)
       })
    }

# 64. 将数组分片 #

例子：`[1,2,3,4,5,6,7,8]` `[[1,2,3],[4,5,6],[7,8]]`

export const arrChunk = (data=[],space=5) => { 
       var result = [];
       for (var i = 0, len = data.length; i < len; i += space) { 
           result.push(data.slice(i, i + space));
       }
       return { data:result,total:data.length,space};
    }

# 65. 复制内容 #

export const copyToClip = (content) => { 
       var aux = document.createElement("input");
       aux.setAttribute("value", content);
       document.body.appendChild(aux);
       aux.select();
       document.execCommand("copy");
       document.body.removeChild(aux);
       console.log('复制成功');
    }

# 66. 生成UUID #

export const generateUUID = () => { 
       let d = new Date().getTime();
       let uuid = 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, function (c) { 
           let r = (d + Math.random() * 16) % 16 | 0;
           d = Math.floor(d / 16);
           return (c == 'x' ? r : (r & 0x7 | 0x8)).toString(16);
       });
       return uuid;
    }

![在这里插入图片描述][20210706143041760.gif_pic_center]

[20210706133530309.gif_pic_center]: /images/20221005/11b29732ca1f474bb41d31c19db5104e.png
[https_github.com_hangjob_vue-admin_blob_master_src_utils_util.js]: https://github.com/hangjob/vue-admin/blob/master/src/utils/util.js
[20210706143041760.gif_pic_center]: /images/20221005/e817326cb84f4a82beef1c13215cb888.png