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						// 判断arr是否为一个数组,返回一个bool值
function isArray(arr) {	return Object.prototype.toString.call(arr) === '[object Array]';}// 深度克隆
function deepClone(obj) {	// 对常见的“非”值,直接返回原来值
	if ([null, undefined, NaN, false].includes(obj)) return obj;	if (typeof obj !== "object" && typeof obj !== 'function') {		//原始类型直接返回
		return obj;	}	var o = isArray(obj) ? [] : {};	for (let i in obj) {		if (obj.hasOwnProperty(i)) {			o[i] = typeof obj[i] === "object" ? deepClone(obj[i]) : obj[i];		}	}	return o;}
function getUUid(len = 32, firstU = true, radix = null) {	let chars = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz'.split('');	let uuid = [];	radix = radix || chars.length;
	if (len) {		// 如果指定uuid长度,只是取随机的字符,0|x为位运算,能去掉x的小数位,返回整数位
		for (let i = 0; i < len; i++) uuid[i] = chars[0 | Math.random() * radix];	} else {		let r;		// rfc4122标准要求返回的uuid中,某些位为固定的字符
		uuid[8] = uuid[13] = uuid[18] = uuid[23] = '-';		uuid[14] = '4';
		for (let i = 0; i < 36; i++) {			if (!uuid[i]) {				r = 0 | Math.random() * 16;				uuid[i] = chars[(i == 19) ? (r & 0x3) | 0x8 : r];			}		}	}	// 移除第一个字符,并用u替代,因为第一个字符为数值时,该guuid不能用作id或者class
	if (firstU) {		uuid.shift();		return 'u' + uuid.join('');	} else {		return uuid.join('');	}}export {	deepClone,	getUUid};
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