js公共类库(类型判断组)

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1.获取行内样式

getByStyle (obj,name){
    if(obj.currentStyle){
        return  obj.currentStyle[name];
    }else{
        return  getComputedStyle(obj,false)[name];
    }
}

2.type类型判断

isString (o) { //是否字符串
    return Object.prototype.toString.call(o).slice(8, -1) === 'String'
}

isNumber (o) { //是否数字
    return Object.prototype.toString.call(o).slice(8, -1) === 'Number'
}

isObj (o) { //是否对象
    return Object.prototype.toString.call(o).slice(8, -1) === 'Object'
}

isArray (o) { //是否数组
    return Object.prototype.toString.call(o).slice(8, -1) === 'Array'
}

isDate (o) { //是否时间
    return Object.prototype.toString.call(o).slice(8, -1) === 'Date'
}

isBoolean (o) { //是否boolean
    return Object.prototype.toString.call(o).slice(8, -1) === 'Boolean'
}

isFunction (o) { //是否函数
    return Object.prototype.toString.call(o).slice(8, -1) === 'Function'
}

isNull (o) { //是否为null
    return Object.prototype.toString.call(o).slice(8, -1) === 'Null'
}

isUndefined (o) { //是否undefined
    return Object.prototype.toString.call(o).slice(8, -1) === 'Undefined'
}

isFalse (o) {
    if (o == '' || o == undefined || o == null || o == 'null' || o == 'undefined' || o == 0 || o == false || o == NaN) return true
    return false
}

isTrue (o) {
    return !this.isFalse(o)
}

3. 常用正则

function 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;
  }
}

4. 严格身份验证

function isCardID(sId) {
  if (!/(^\d{15}$)|(^\d{17}(\d|X|x)$)/.test(sId)) {
      alert('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))]) { 
      alert('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())) {
      alert('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) { 
      alert('你输入的身份证号非法')
      return false
  }
  
  return true
}

5.判断浏览器类型

function browserType(){
  var userAgent = navigator.userAgent; //取得浏览器的userAgent字符串
  var isOpera = userAgent.indexOf("Opera") > -1; //判断是否Opera浏览器
  var isIE = userAgent.indexOf("compatible") > -1 && userAgent.indexOf("MSIE") > -1 && !isOpera; //判断是否IE浏览器
  var isEdge = userAgent.indexOf("Edge") > -1; //判断是否IE的Edge浏览器
  var isFF = userAgent.indexOf("Firefox") > -1; //判断是否Firefox浏览器
  var isSafari = userAgent.indexOf("Safari") > -1 && userAgent.indexOf("Chrome") == -1; //判断是否Safari浏览器
  var isChrome = userAgent.indexOf("Chrome") > -1 && userAgent.indexOf("Safari") > -1; //判断Chrome浏览器
  if (isIE) {
      var reIE = new RegExp("MSIE (\\d+\\.\\d+);");
      reIE.test(userAgent);
      var fIEVersion = parseFloat(RegExp["$1"]);
      if(fIEVersion == 7) return "IE7"
      else if(fIEVersion == 8) return "IE8";
      else if(fIEVersion == 9) return "IE9";
      else if(fIEVersion == 10) return "IE10";
      else if(fIEVersion == 11) return "IE11";
      else return "IE7以下"//IE版本过低
  }

  if (isFF) return "FF";
  if (isOpera) return "Opera";
  if (isEdge) return "Edge";
  if (isSafari) return "Safari";
  if (isChrome) return "Chrome";
}

是否为IOS

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

是否为PC端

isPC () { //是否为PC端
    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;
}


浏览器环境判断

const ua = window.navigator.userAgent.toLowerCase()
const getEnv = () => {
  if (ua.includes('micromessenger')) { return 'wechat' }
  else if (ua.includes('mobile')) { return 'mobile' }
  else { return 'pc'}
}

typeof 判断类型

function typeOf (obj) {
  const toString = Object.prototype.toString
  const map = {
    '[object Boolean]': 'boolean',
    '[object Number]': 'number',
    '[object String]': 'string',
    '[object Function]': 'function',
    '[object Array]': 'array',
    '[object Date]': 'date',
    '[object RegExp]': 'regExp',
    '[object Undefined]': 'undefined',
    '[object Null]': 'null',
    '[object Object]': 'object'
  }
  return map[toString.call(obj)]
}