vue-utils__工具类函数

1.is 判断

const toString = Object.prototype.toString;

/**
 * @description: 判断值是否为某个类型
 */
export function is(val, type) {
	return toString.call(val) === `[object ${type}]`;
}

/**
 * @description:  是否为函数
 */
export function isFunction(val) {
	return is(val, "Function");
}

/**
 * @description: 是否已定义
 */
export const isDef = (val) => {
	return typeof val !== "undefined";
};

export const isUnDef = (val) => {
	return !isDef(val); 
};
/**
 * @description: 是否为对象
 */
export const isObject = (val) => {
	return val !== null && is(val, "Object");
};

/**
 * @description:  是否为时间
 */
export function isDate(val) {
	return is(val, "Date");
}

/**
 * @description:  是否为数值
 */
export function isNumber(val) {
	return is(val, "Number");
}

/**
 * @description:  是否为AsyncFunction
 */
export function isAsyncFunction(val){
	return is(val, "AsyncFunction");
}

/**
 * @description:  是否为promise
 */
export function isPromise(val){
	return is(val, "Promise") && isObject(val) && isFunction(val.then) && isFunction(val.catch);
}

/**
 * @description:  是否为字符串
 */
export function isString(val){
	return is(val, "String");
}

/**
 * @description:  是否为boolean类型
 */
export function isBoolean(val) {
	return is(val, "Boolean");
}

/**
 * @description:  是否为数组
 */
export function isArray(val) {
	return val && Array.isArray(val);
}

/**
 * @description: 是否客户端
 */
export const isClient = () => {
	return typeof window !== "undefined";
};

/**
 * @description: 是否为浏览器
 */
export const isWindow = (val) => {
	return typeof window !== "undefined" && is(val, "Window");
};

/**
 * @description: 是否为Element
 */
export const isElement = (val) => {
	return isObject(val) && !!val.tagName;
};

export const isServer = typeof window === "undefined";

// 是否为图片节点
export function isImageDom(o) {
	return o && ["IMAGE", "IMG"].includes(o.tagName);
}

// 是否为空
export function isNull(val) {
	return val === null;
}

// 是否为 undefined 并且为 null
export function isNullAndUnDef(val) {
	return isUnDef(val) && isNull(val);
}

// 是否为 undefined 或者 null 
export function isNullOrUnDef(val){
	return isUnDef(val) || isNull(val);
}

2.utils

import { isArray } from "@/utils/is";

/**
 * @description 获取localStorage
 * @param {String} key Storage名称
 * @return string
 */
export function localGet(key: string) {
	const value = window.localStorage.getItem(key);
	try {
		return JSON.parse(window.localStorage.getItem(key) as string);
	} catch (error) {
		return value;
	}
}

/**
 * @description 存储localStorage
 * @param {String} key Storage名称
 * @param {Any} value Storage值
 * @return void
 */
export function localSet(key: string, value: any) {
	window.localStorage.setItem(key, JSON.stringify(value));
}

/**
 * @description 清除localStorage
 * @param {String} key Storage名称
 * @return void
 */
export function localRemove(key: string) {
	window.localStorage.removeItem(key);
}

/**
 * @description 清除所有localStorage
 * @return void
 */
export function localClear() {
	window.localStorage.clear();
}

/**
 * @description 对象数组深克隆
 * @param {Object} obj 源对象
 * @return object
 */
export function deepCopy<T>(obj: any): T {
	let newObj: any;
	try {
		newObj = obj.push ? [] : {};
	} catch (error) {
		newObj = {};
	}
	for (let attr in obj) {
		if (typeof obj[attr] === "object") {
			newObj[attr] = deepCopy(obj[attr]);
		} else {
			newObj[attr] = obj[attr];
		}
	}
	return newObj;
}

/**
 * @description 判断数据类型
 * @param {Any} val 需要判断类型的数据
 * @return string
 */
export function isType(val: any) {
	if (val === null) return "null";
	if (typeof val !== "object") return typeof val;
	else return Object.prototype.toString.call(val).slice(8, -1).toLocaleLowerCase();
}

/**
 * @description 生成随机数
 * @param {Number} min 最小值
 * @param {Number} max 最大值
 * @return number
 */
export function randomNum(min: number, max: number): number {
	let num = Math.floor(Math.random() * (min - max) + max);
	return num;
}

/**
 * @description 获取当前时间
 * @return string
 */
export function getTimeState() {
	// 获取当前时间
	let timeNow = new Date();
	// 获取当前小时
	let hours = timeNow.getHours();
	// 判断当前时间段
	if (hours >= 6 && hours <= 10) return `早上好 ⛅`;
	if (hours >= 10 && hours <= 14) return `中午好 

标签：__,function,vue,return,description,val,utils,param,export	

From： https://www.cnblogs.com/miyagi-jiye/p/16791265.html