js 工具函数

摘要：获取中传参的值判断变量的数据类型深度克隆对象或数组多个对象或数组嵌套节流函数生成随机字符串判断对象是否为空判断是否有该改增加生成随机整数打乱数组顺序，洗牌算法深拷贝数组判断是否为纯粹的对象，由或者创建的不是挂在原型上的没有原型对象的对象通

function getParam (name) {
    var reg = new RegExp("(^|&)" + name + "=([^&]*)(&|$)", "i");
    var r=window.location.search.substr(1).replace(new RegExp(/(amp;)/g),"").match(reg);
    if (r != null) {
        return r[2];
    }
    return null;
};

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)];
},

      deepCopy(data) {
        const t = this.typeOf(data);
        let o;

        if (t === "array") {
          o = [];
        } else if ( t === "object") {
          o = {};
        } else {
          return data;
        }

        if (t === "array") {
          for (let i = 0; i < data.length; i++) {
            o.push(this.deepCopy(data[i]));
          }
        } else if ( t === "object") {
          for (let i in data) {
            o[i] = this.deepCopy(data[i]);
          }
        }
        return o;
      },

debounce(func, delay) {

    let timer;

    return function (...args) {
        if (timer) {
            clearTimeout(timer);
        }

    timer = window.setTimeout(() => {
        func.apply(this, args);
    }, delay);
    }

},

function randomStr (len) {
  len = len || 32;
  var chars = "ABCDEFGHJKMNPQRSTWXYZabcdefhijkmnprstwxyz2345678";
  var maxPos = chars.length;
  var pwd = "";
  for (let i = 0; i < len; i++) {
    pwd += chars.charAt(Math.floor(Math.random() * maxPos));
  }
  return pwd;
};

function isEmptyObject (obj) {
    var name;
    for (name in obj) {
        return false;
    }

    return true;
},

export function hasClass(el, className){
    let reg = new RegExp("(^|S)"+className+"(s|$)");
    return reg.test(el.className);
}

export function addClass(el, className){

    if(hasClass(el, className)){
        return;
    }

    let newClass=el.className.split(" ");
    newClass.push(className);
    el.className=newClass.join(" ");
}

function getRandomInt(min, max) {

    return Math.floor(Math.random() * (max - min + 1) + min);

}

function shuffle(arr) {

    let _arr = arr.slice();        //深拷贝数组
    for (let i = 0; i<_arr.length; i++) {
        let j = getRandomInt(0, i);
        let t = _arr[i];
        _arr[i] = _arr[j];
        _arr[j] = t;
    }

    return _arr;

}

    function isPlainObject ( obj ) {
        var proto, Ctor;
        var toString = Object.prototype.toString;
        var getProto = Object.getPrototypeOf;  // 不是挂在原型上的
        var hasOwn = Object.prototype.hasOwnProperty;
        var fnToString = hasOwn.toString;
        var ObjectFunctionString = fnToString.call(Object);
        
        if ( !obj || toString.call( obj ) !== "[object Object]" ) {
            return false;
        }

        proto = getProto( obj );
        
        // 没有原型对象的对象 (`Object.create( null )`)
        if ( !proto ) {
            return true;
        }
        
        // 通过 new Object 出来的对象
        Ctor = hasOwn.call( proto, "constructor" ) && proto.constructor;
        return typeof Ctor === "function" && fnToString.call( Ctor ) === ObjectFunctionString;
    }

var times = 0; // 记录点击次数
var timer;
const CLICK_TIME = 5；  // 比如连续点击5此就触发
document.body.onclick = function () {
    if (timer) {
        clearTimeout(timer);
        timer = null;
    }
    if (times >= CLICK_TIME) {
        // do something
    }
    times++;
   timer = setTimeout(function () {
        times = 0;
   }, 200)
}

const REWARD_TICKET = 100
function getRandomArray(count) {
  let arr = [];
  let remainTicket = 0;
  for (let i = 1; i < count; i++) {
    if (i === 1) {
      remainTicket = REWARD_TICKET;
    } else {
      remainTicket = REWARD_TICKET - arr.reduce((prev, curr) => {
        return prev + curr;
      });
    }
    if (remainTicket < 11) {
      arr.push(remainTicket);
      break;
    }
    const randomNumber = parseInt(Math.random() * remainTicket, 10);
    arr.push(randomNumber > 10 ? randomNumber : 10);
  }

  // make sure every number >= 10
  if (arr[arr.length - 1] < 10) {
    const cut = arr.splice(arr.length - 2, 2);
    arr.push(cut[0] + cut[1]);
  }
  return arr;
}