1. 數(shù)字操作

（1）生成指定范圍隨機(jī)數(shù)

export?const?randomNum?=?(min,?max)?=>?Math.floor(Math.random()?*?(max?-?min?+?1))?+?min;
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（2）數(shù)字千分位分隔

export?const?format?=?(n)?=>?{
????let?num?=?n.toString();
????let?len?=?num.length;
????if?(len?<=?3)?{
????????return?num;
????}?else?{
????????let?temp?=?'';
????????let?remainder?=?len?%?3;
????????if?(remainder?>?0)?{?//?不是3的整數(shù)倍
????????????return?num.slice(0,?remainder)?+?','?+?num.slice(remainder,?len).match(/\d{3}/g).join(',')?+?temp;
????????}?else?{?//?3的整數(shù)倍
????????????return?num.slice(0,?len).match(/\d{3}/g).join(',')?+?temp;?
????????}
????}
}
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2. 數(shù)組操作

（1）數(shù)組亂序

export?const?arrScrambling?=?(arr)?=>?{
????for?(let?i?=?0;?i???????const?randomIndex?=?Math.round(Math.random()?*?(arr.length?-?1?-?i))?+?i;
??????[arr[i],?arr[randomIndex]]?=?[arr[randomIndex],?arr[i]];
????}
????return?arr;
}
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（2）數(shù)組扁平化

export?const?flatten?=?(arr)?=>?{
??let?result?=?[];

??for(let?i?=?0;?i?????if(Array.isArray(arr[i]))?{
??????result?=?result.concat(flatten(arr[i]));
????}?else?{
??????result.push(arr[i]);
????}
??}
??return?result;
}
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（3）數(shù)組中獲取隨機(jī)數(shù)

export?const?sample?=?arr?=>?arr[Math.floor(Math.random()?*?arr.length)];
?
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3. 字符串操作

（1）生成隨機(jī)字符串

export?const?randomString?=?(len)?=>?{
????let?chars?=?'ABCDEFGHJKMNPQRSTWXYZabcdefhijkmnprstwxyz123456789';
????let?strLen?=?chars.length;
????let?randomStr?=?'';
????for?(let?i?=?0;?i?????????randomStr?+=?chars.charAt(Math.floor(Math.random()?*?strLen));
????}
????return?randomStr;
};
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（2）字符串首字母大寫(xiě)

export?const?fistLetterUpper?=?(str)?=>?{
????return?str.charAt(0).toUpperCase()?+?str.slice(1);
};
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（3）手機(jī)號(hào)中間四位變成*

export?const?telFormat?=?(tel)?=>?{
???tel?=?String(tel);?
????return?tel.substr(0,3)?+?"****"?+?tel.substr(7);
};
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（4）駝峰命名轉(zhuǎn)換成短橫線(xiàn)命名

export?const?getKebabCase?=?(str)?=>?{
????return?str.replace(/[A-Z]/g,?(item)?=>?'-'?+?item.toLowerCase())
}
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（5）短橫線(xiàn)命名轉(zhuǎn)換成駝峰命名

export?const?getCamelCase?=?(str)?=>?{
????return?str.replace(?/-([a-z])/g,?(i,?item)?=>?item.toUpperCase())
}
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（6）全角轉(zhuǎn)換為半角

export?const?toCDB?=?(str)?=>?{
??let?result?=?"";
??for?(let?i?=?0;?i?????code?=?str.charCodeAt(i);
????if?(code?>=?65281?&&?code?<=?65374)?{
??????result?+=?String.fromCharCode(str.charCodeAt(i)?-?65248);
????}?else?if?(code?==?12288)?{
??????result?+=?String.fromCharCode(str.charCodeAt(i)?-?12288?+?32);
????}?else?{
??????result?+=?str.charAt(i);
????}
??}
??return?result;
}

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（7）半角轉(zhuǎn)換為全角

export?const?toDBC?=?(str)?=>?{
??let?result?=?"";
??for?(let?i?=?0;?i?????code?=?str.charCodeAt(i);
????if?(code?>=?33?&&?code?<=?126)?{
??????result?+=?String.fromCharCode(str.charCodeAt(i)?+?65248);
????}?else?if?(code?==?32)?{
??????result?+=?String.fromCharCode(str.charCodeAt(i)?+?12288?-?32);
????}?else?{
??????result?+=?str.charAt(i);
????}
??}
??return?result;
}

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4. 格式轉(zhuǎn)化

（1）數(shù)字轉(zhuǎn)化為大寫(xiě)金額

export?const?digitUppercase?=?(n)?=>?{
????const?fraction?=?['角',?'分'];
????const?digit?=?[
????????'零',?'壹',?'貳',?'叁',?'肆',
????????'伍',?'陸',?'柒',?'捌',?'玖'
????];
????const?unit?=?[
????????['元',?'萬(wàn)',?'億'],
????????['',?'拾',?'佰',?'仟']
????];
????n?=?Math.abs(n);
????let?s?=?'';
????for?(let?i?=?0;?i?????????s?+=?(digit[Math.floor(n?*?10?*?Math.pow(10,?i))?%?10]?+?fraction[i]).replace(/零./,?'');
????}
????s?=?s?||?'整';
????n?=?Math.floor(n);
????for?(let?i?=?0;?i?0].length?&&?n?>?0;?i++)?{
????????let?p?=?'';
????????for?(let?j?=?0;?j?1].length?&&?n?>?0;?j++)?{
????????????p?=?digit[n?%?10]?+?unit[1][j]?+?p;
????????????n?=?Math.floor(n?/?10);
????????}
????????s?=?p.replace(/(零.)*零$/,?'').replace(/^$/,?'零')?+?unit[0][i]?+?s;
????}
????return?s.replace(/(零.)*零元/,?'元')
????????.replace(/(零.)+/g,?'零')
????????.replace(/^整$/,?'零元整');
};
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（2）數(shù)字轉(zhuǎn)化為中文數(shù)字

export?const?intToChinese?=?(value)?=>?{
?const?str?=?String(value);
?const?len?=?str.length-1;
?const?idxs?=?['','十','百','千','萬(wàn)','十','百','千','億','十','百','千','萬(wàn)','十','百','千','億'];
?const?num?=?['零','一','二','三','四','五','六','七','八','九'];
?return?str.replace(/([1-9]|0+)/g,?(?$,?$1,?idx,?full)?=>?{
????let?pos?=?0;
????if($1[0]?!==?'0'){
??????pos?=?len-idx;
??????if(idx?==?0?&&?$1[0]?==?1?&&?idxs[len-idx]?==?'十'){
????????return?idxs[len-idx];
??????}
??????return?num[$1[0]]?+?idxs[len-idx];
????}?else?{
??????let?left?=?len?-?idx;
??????let?right?=?len?-?idx?+?$1.length;
??????if(Math.floor(right?/?4)?-?Math.floor(left?/?4)?>?0){
????????pos?=?left?-?left?%?4;
??????}
??????if(?pos?){
????????return?idxs[pos]?+?num[$1[0]];
??????}?else?if(?idx?+?$1.length?>=?len?){
????????return?'';
??????}else?{
????????return?num[$1[0]]
??????}
????}
???});
}
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5. 操作存儲(chǔ)

（1）存儲(chǔ)loalStorage

export?const?loalStorageSet?=?(key,?value)?=>?{
????if?(!key)?return;
????if?(typeof?value?!==?'string')?{
????????value?=?JSON.stringify(value);
????}
????window.localStorage.setItem(key,?value);
};
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（2）獲取localStorage

export?const?loalStorageGet?=?(key)?=>?{
????if?(!key)?return;
????return?window.localStorage.getItem(key);
};
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（3）刪除localStorage

export?const?loalStorageRemove?=?(key)?=>?{
????if?(!key)?return;
????window.localStorage.removeItem(key);
};
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（4）存儲(chǔ)sessionStorage

export?const?sessionStorageSet?=?(key,?value)?=>?{
???if?(!key)?return;
????if?(typeof?value?!==?'string')?{
??????value?=?JSON.stringify(value);
????}
????window.sessionStorage.setItem(key,?value)
};
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（5）獲取sessionStorage

export?const?sessionStorageGet?=?(key)?=>?{
???if?(!key)?return;
????return?window.sessionStorage.getItem(key)
};
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（6）刪除sessionStorage

export?const?sessionStorageRemove?=?(key)?=>?{
???if?(!key)?return;
????window.sessionStorage.removeItem(key)
};
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6. 操作cookie

（1）設(shè)置cookie

export?const?setCookie?=?(key,?value,?expire)?=>?{
????const?d?=?new?Date();
????d.setDate(d.getDate()?+?expire);
????document.cookie?=?`${key}=${value};expires=${d.toUTCString()}`
};

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（2）讀取cookie

export?const?getCookie?=?(key)?=>?{
????const?cookieStr?=?unescape(document.cookie);
???????const?arr?=?cookieStr.split(';?');
???????let?cookieValue?=?'';
???????for?(let?i?=?0;?i????????????const?temp?=?arr[i].split('=');
???????????if?(temp[0]?===?key)?{
???????????????cookieValue?=?temp[1];
???????????????break
???????}
????}
????return?cookieValue
};
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（3）刪除cookie

export?const?delCookie?=?(key)?=>?{
????document.cookie?=?`${encodeURIComponent(key)}=;expires=${new?Date()}`
};
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7. 格式校驗(yàn)

（1）校驗(yàn)身份證號(hào)碼

export?const?checkCardNo?=?(value)?=>?{
????let?reg?=?/(^\d{15}$)|(^\d{18}$)|(^\d{17}(\d|X|x)$)/;
????return?reg.test(value);
};
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（2）校驗(yàn)是否包含中文

export?const?haveCNChars?=>?(value)?=>?{
????return?/[\u4e00-\u9fa5]/.test(value);
}
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（3）校驗(yàn)是否為中國(guó)大陸的郵政編碼

export?const?isPostCode?=?(value)?=>?{
????return?/^[1-9][0-9]{5}$/.test(value.toString());
}
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（4）校驗(yàn)是否為IPv6地址

export?const?isIPv6?=?(str)?=>?{
????return?Boolean(str.match(/:/g)?str.match(/:/g).length<=7:false?&&?/::/.test(str)?/^([\da-f]{1,4}(:|::)){1,6}[\da-f]{1,4}$/i.test(str):/^([\da-f]{1,4}:){7}[\da-f]{1,4}$/i.test(str));
}
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（5）校驗(yàn)是否為郵箱地址

export?const?isEmail?=?(value)?{
????return?/^[a-zA-Z0-9_-]+@[a-zA-Z0-9_-]+(\.[a-zA-Z0-9_-]+)+$/.test(value);
}
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（6）校驗(yàn)是否為中國(guó)大陸手機(jī)號(hào)

export?const?isTel?=?(value)?=>?{
????return?/^1[3,4,5,6,7,8,9][0-9]{9}$/.test(value.toString());
}
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（7）校驗(yàn)是否包含emoji表情

export?const?isEmojiCharacter?=?(value)?=>?{
???value?=?String(value);
????for?(let?i?=?0;?i?????????const?hs?=?value.charCodeAt(i);
????????if?(0xd800?<=?hs?&&?hs?<=?0xdbff)?{
????????????if?(value.length?>?1)?{
????????????????const?ls?=?value.charCodeAt(i?+?1);
????????????????const?uc?=?((hs?-?0xd800)?*?0x400)?+?(ls?-?0xdc00)?+?0x10000;
????????????????if?(0x1d000?<=?uc?&&?uc?<=?0x1f77f)?{
????????????????????return?true;
????????????????}
????????????}
????????}?else?if?(value.length?>?1)?{
????????????const?ls?=?value.charCodeAt(i?+?1);
????????????if?(ls?==?0x20e3)?{
????????????????return?true;
????????????}
????????}?else?{
????????????if?(0x2100?<=?hs?&&?hs?<=?0x27ff)?{
????????????????return?true;
????????????}?else?if?(0x2B05?<=?hs?&&?hs?<=?0x2b07)?{
????????????????return?true;
????????????}?else?if?(0x2934?<=?hs?&&?hs?<=?0x2935)?{
????????????????return?true;
????????????}?else?if?(0x3297?<=?hs?&&?hs?<=?0x3299)?{
????????????????return?true;
????????????}?else?if?(hs?==?0xa9?||?hs?==?0xae?||?hs?==?0x303d?||?hs?==?0x3030
????????????????????||?hs?==?0x2b55?||?hs?==?0x2b1c?||?hs?==?0x2b1b
????????????????????||?hs?==?0x2b50)?{
????????????????return?true;
????????????}
????????}
????}
???return?false;
}
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8. 操作URL

（1）獲取URL參數(shù)列表

export?const?GetRequest?=?()?=>?{
????let?url?=?location.search;
????const?paramsStr?=?/.+\?(.+)$/.exec(url)[1];?//?將???后面的字符串取出來(lái)
????const?paramsArr?=?paramsStr.split('&');?//?將字符串以?&?分割后存到數(shù)組中
????let?paramsObj?=?{};
????//?將?params?存到對(duì)象中
????paramsArr.forEach(param?=>?{
??????if?(/=/.test(param))?{?//?處理有?value?的參數(shù)
????????let?[key,?val]?=?param.split('=');?//?分割?key?和?value
????????val?=?decodeURIComponent(val);?//?解碼
????????val?=?/^\d+$/.test(val)???parseFloat(val)?:?val;?//?判斷是否轉(zhuǎn)為數(shù)字
????????if?(paramsObj.hasOwnProperty(key))?{?//?如果對(duì)象有?key，則添加一個(gè)值
??????????paramsObj[key]?=?[].concat(paramsObj[key],?val);
????????}?else?{?//?如果對(duì)象沒(méi)有這個(gè)?key，創(chuàng)建?key?并設(shè)置值
??????????paramsObj[key]?=?val;
????????}
??????}?else?{?//?處理沒(méi)有?value?的參數(shù)
????????paramsObj[param]?=?true;
??????}
????})
????return?paramsObj;
};
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（2）檢測(cè)URL是否有效

export?const?getUrlState?=?(URL)?=>?{
??let?xmlhttp?=?new?ActiveXObject("microsoft.xmlhttp");
??xmlhttp.Open("GET",?URL,?false);
??try?{
????xmlhttp.Send();
??}?catch?(e)?{
??}?finally?{
????let?result?=?xmlhttp.responseText;
????if?(result)?{
??????if?(xmlhttp.Status?==?200)?{
????????return?true;
??????}?else?{
????????return?false;
??????}
????}?else?{
??????return?false;
????}
??}
}
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（3）鍵值對(duì)拼接成URL參數(shù)

export?const?params2Url?=?(obj)?=>?{
?????let?params?=?[]
?????for?(let?key?in?obj)?{
???????params.push(`${key}=${obj[key]}`);
?????}
?????return?encodeURIComponent(params.join('&'))
}
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（4）修改URL中的參數(shù)

export?const?replaceParamVal?=>?(paramName,?replaceWith)?{
???const?oUrl?=?location.href.toString();
???const?re?=?eval('/('+?paramName+'=)([^&]*)/gi');
???location.href?=?oUrl.replace(re,paramName+'='+replaceWith);
???return?location.href;
}
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（5）刪除URL中指定參數(shù)

export?const?funcUrlDel?=?(name)?=>?{
??const?baseUrl?=?location.origin?+?location.pathname?+?"?";
??const?query?=?location.search.substr(1);
??if?(query.indexOf(name)?>?-1)?{
????const?obj?=?{};
????const?arr?=?query.split("&");
????for?(let?i?=?0;?i???????arr[i]?=?arr[i].split("=");
??????obj[arr[i][0]]?=?arr[i][1];
????}
????delete?obj[name];
????return?baseUrl?+?JSON.stringify(obj).replace(/[\"\{\}]/g,"").replace(/\:/g,"=").replace(/\,/g,"&");
??}
}
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9. 設(shè)備判斷

（1）判斷是移動(dòng)還是PC設(shè)備

export?const?isMobile?=?()?=>?{
??if?((navigator.userAgent.match(/(iPhone|iPod|Android|ios|iOS|iPad|Backerry|WebOS|Symbian|Windows?Phone|Phone)/i)))?{
??return?'mobile';
??}
??return?'desktop';
}
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（2）判斷是否是蘋(píng)果還是安卓移動(dòng)設(shè)備

export?const?isAppleMobileDevice?=?()?=>?{
??let?reg?=?/iphone|ipod|ipad|Macintosh/i;
??return?reg.test(navigator.userAgent.toLowerCase());
}
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（3）判斷是否是安卓移動(dòng)設(shè)備

export?const?isAndroidMobileDevice?=?()?=>?{
??return?/android/i.test(navigator.userAgent.toLowerCase());
}
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（4）判斷是Windows還是Mac系統(tǒng)

export?const?osType?=?()?=>?{
????const?agent?=?navigator.userAgent.toLowerCase();
????const?isMac?=?/macintosh|mac?os?x/i.test(navigator.userAgent);
???const?isWindows?=?agent.indexOf("win64")?>=?0?||?agent.indexOf("wow64")?>=?0?||?agent.indexOf("win32")?>=?0?||?agent.indexOf("wow32")?>=?0;
????if?(isWindows)?{
????????return?"windows";
????}
????if(isMac){
????????return?"mac";
????}
}
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（5）判斷是否是微信/QQ內(nèi)置瀏覽器

export?const?broswer?=?()?=>?{
????const?ua?=?navigator.userAgent.toLowerCase();
????if?(ua.match(/MicroMessenger/i)?==?"micromessenger")?{
????????return?"weixin";
????}?else?if?(ua.match(/QQ/i)?==?"qq")?{
????????return?"QQ";
????}
????return?false;
}
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（6）瀏覽器型號(hào)和版本

export?const?getExplorerInfo?=?()?=>?{
????let?t?=?navigator.userAgent.toLowerCase();
????return?0?<=?t.indexOf("msie")???{?//ie?
????????type:?"IE",
????????version:?Number(t.match(/msie?([\d]+)/)[1])
????}?:?!!t.match(/trident\/.+?rv:(([\d.]+))/)???{?//?ie?11
????????type:?"IE",
????????version:?11
????}?:?0?<=?t.indexOf("edge")???{
????????type:?"Edge",
????????version:?Number(t.match(/edge\/([\d]+)/)[1])
????}?:?0?<=?t.indexOf("firefox")???{
????????type:?"Firefox",
????????version:?Number(t.match(/firefox\/([\d]+)/)[1])
????}?:?0?<=?t.indexOf("chrome")???{
????????type:?"Chrome",
????????version:?Number(t.match(/chrome\/([\d]+)/)[1])
????}?:?0?<=?t.indexOf("opera")???{
????????type:?"Opera",
????????version:?Number(t.match(/opera.([\d]+)/)[1])
????}?:?0?<=?t.indexOf("Safari")???{
????????type:?"Safari",
????????version:?Number(t.match(/version\/([\d]+)/)[1])
????}?:?{
????????type:?t,
????????version:?-1
????}
}
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10. 瀏覽器操作

（1）滾動(dòng)到頁(yè)面頂部

export?const?scrollToTop?=?()?=>?{
??const?height?=?document.documentElement.scrollTop?||?document.body.scrollTop;
??if?(height?>?0)?{
????window.requestAnimationFrame(scrollToTop);
????window.scrollTo(0,?height?-?height?/?8);
??}
}
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（2）滾動(dòng)到頁(yè)面底部

export?const?scrollToBottom?=?()?=>?{
??window.scrollTo(0,?document.documentElement.clientHeight);??
}
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（3）滾動(dòng)到指定元素區(qū)域

export?const?smoothScroll?=?(element)?=>?{
????document.querySelector(element).scrollIntoView({
????????behavior:?'smooth'
????});
};
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（4）獲取可視窗口高度

export?const?getClientHeight?=?()?=>?{
????let?clientHeight?=?0;
????if?(document.body.clientHeight?&&?document.documentElement.clientHeight)?{
????????clientHeight?=?(document.body.clientHeight?document.documentElement.clientHeight)???document.body.clientHeight?:?document.documentElement.clientHeight;
????}
????else?{
????????clientHeight?=?(document.body.clientHeight?>?document.documentElement.clientHeight)???document.body.clientHeight?:?document.documentElement.clientHeight;
????}
????return?clientHeight;
}
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（5）獲取可視窗口寬度

export?const?getPageViewWidth?=?()?=>?{
????return?(document.compatMode?==?"BackCompat"???document.body?:?document.documentElement).clientWidth;
}
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（6）打開(kāi)瀏覽器全屏

export?const?toFullScreen?=?()?=>?{
????let?element?=?document.body;
????if?(element.requestFullscreen)?{
??????element.requestFullscreen()
????}?else?if?(element.mozRequestFullScreen)?{
??????element.mozRequestFullScreen()
????}?else?if?(element.msRequestFullscreen)?{
??????element.msRequestFullscreen()
????}?else?if?(element.webkitRequestFullscreen)?{
??????element.webkitRequestFullScreen()
????}
}
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（7）退出瀏覽器全屏

export?const?exitFullscreen?=?()?=>?{
????if?(document.exitFullscreen)?{
??????document.exitFullscreen()
????}?else?if?(document.msExitFullscreen)?{
??????document.msExitFullscreen()
????}?else?if?(document.mozCancelFullScreen)?{
??????document.mozCancelFullScreen()
????}?else?if?(document.webkitExitFullscreen)?{
??????document.webkitExitFullscreen()
????}
}
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11. 時(shí)間操作

（1）當(dāng)前時(shí)間

export?const?nowTime?=?()?=>?{
????const?now?=?new?Date();
????const?year?=?now.getFullYear();
????const?month?=?now.getMonth();
????const?date?=?now.getDate()?>=?10???now.getDate()?:?('0'?+?now.getDate());
????const?hour?=?now.getHours()?>=?10???now.getHours()?:?('0'?+?now.getHours());
????const?miu?=?now.getMinutes()?>=?10???now.getMinutes()?:?('0'?+?now.getMinutes());
????const?sec?=?now.getSeconds()?>=?10???now.getSeconds()?:?('0'?+?now.getSeconds());
????return?+year?+?"年"?+?(month?+?1)?+?"月"?+?date?+?"日?"?+?hour?+?":"?+?miu?+?":"?+?sec;
}
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（2）格式化時(shí)間

export?const?dateFormater?=?(formater,?time)?=>?{
????let?date?=?time???new?Date(time)?:?new?Date(),
????????Y?=?date.getFullYear()?+?'',
????????M?=?date.getMonth()?+?1,
????????D?=?date.getDate(),
????????H?=?date.getHours(),
????????m?=?date.getMinutes(),
????????s?=?date.getSeconds();
????return?formater.replace(/YYYY|yyyy/g,?Y)
????????.replace(/YY|yy/g,?Y.substr(2,?2))
????????.replace(/MM/g,(M<10???'0'?:?'')?+?M)
????????.replace(/DD/g,(D<10???'0'?:?'')?+?D)
????????.replace(/HH|hh/g,(H<10???'0'?:?'')?+?H)
????????.replace(/mm/g,(m<10???'0'?:?'')?+?m)
????????.replace(/ss/g,(s<10???'0'?:?'')?+?s)
}
//?dateFormater('YYYY-MM-DD?HH:mm:ss')
//?dateFormater('YYYYMMDDHHmmss')
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12. JavaScript操作

（1）阻止冒泡事件

export?const?stopPropagation?=?(e)?=>?{?
????e?=?e?||?window.event;?
????if(e.stopPropagation)?{????//?W3C阻止冒泡方法?
????????e.stopPropagation();?
????}?else?{?
????????e.cancelBubble?=?true;?//?IE阻止冒泡方法?
????}?
}?
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（2）防抖函數(shù)

export?const?debounce?=?(fn,?wait)?=>?{
??let?timer?=?null;

??return?function()?{
????let?context?=?this,
????????args?=?arguments;

????if?(timer)?{
??????clearTimeout(timer);
??????timer?=?null;
????}

????timer?=?setTimeout(()?=>?{
??????fn.apply(context,?args);
????},?wait);
??};
}
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（3）節(jié)流函數(shù)

export?const?throttle?=?(fn,?delay)?=>?{
??let?curTime?=?Date.now();

??return?function()?{
????let?context?=?this,
????????args?=?arguments,
????????nowTime?=?Date.now();

????if?(nowTime?-?curTime?>=?delay)?{
??????curTime?=?Date.now();
??????return?fn.apply(context,?args);
????}
??};
}
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（4）數(shù)據(jù)類(lèi)型判斷

export?const?getType?=?(value)?=>?{
??if?(value?===?null)?{
????return?value?+?"";
??}
??//?判斷數(shù)據(jù)是引用類(lèi)型的情況
??if?(typeof?value?===?"object")?{
????let?valueClass?=?Object.prototype.toString.call(value),
??????type?=?valueClass.split("?")[1].split("");
????type.pop();
????return?type.join("").toLowerCase();
??}?else?{
????//?判斷數(shù)據(jù)是基本數(shù)據(jù)類(lèi)型的情況和函數(shù)的情況
????return?typeof?value;
??}
}
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（5）對(duì)象深拷貝

export?const?deepClone?=?(obj,?hash?=?new?WeakMap())?=>?{
??//?日期對(duì)象直接返回一個(gè)新的日期對(duì)象
??if?(obj?instanceof?Date){
???return?new?Date(obj);
??}?
??//正則對(duì)象直接返回一個(gè)新的正則對(duì)象?????
??if?(obj?instanceof?RegExp){
???return?new?RegExp(obj);?????
??}
??//如果循環(huán)引用,就用?weakMap?來(lái)解決
??if?(hash.has(obj)){
???return?hash.get(obj);
??}
??//?獲取對(duì)象所有自身屬性的描述
??let?allDesc?=?Object.getOwnPropertyDescriptors(obj);
??//?遍歷傳入?yún)?shù)所有鍵的特性
??let?cloneObj?=?Object.create(Object.getPrototypeOf(obj),?allDesc)
??
??hash.set(obj,?cloneObj)
??for?(let?key?of?Reflect.ownKeys(obj))?{?
????if(typeof?obj[key]?===?'object'?&&?obj[key]?!==?null){
?????cloneObj[key]?=?deepClone(obj[key],?hash);
????}?else?{
?????cloneObj[key]?=?obj[key];
????}
??}
??return?cloneObj
}
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