cjl_npm_tools/src/utils.js

提供了关于时间，日期方面的方法，还有像深度拷贝，封装的百度翻译，16进制颜色转换等

//千分位分隔符
function escapeThousands (int){
	let num = (int || 0).toString(), result = '';
	while(num.length > 3) {
		result = ',' + num.slice(-3) + result;
		num = num.slice(0, num.length - 3);
	}

	if (num) {
		result = num + result;
	}
	return result;
}


//16进制颜色转换(color:颜色，opacity：透明度)
function getHexOpacityColor(color,opacity){
    opacity = Math.max(opacity,0);
    opacity = Math.min(opacity,1);
    color = color.replace(/\#/g,'').toUpperCase();
    if(color.length === 3){
        let arr = color.split('');
        color = '';
        for (let i = 0; i < arr.length; i++) {
        color += (arr[i] + arr[i]);//将简写的3位字符补全到6位字符
        }
    }
    let num = Math.round(255 * opacity);//四舍五入
    let str = '';
    let arrHex = ["0","1","2","3","4","5","6","7","8","9","A","B","C","D","E","F"];//十六进制数组
    while (num>0) {
        let mod = num % 16;
        num = (num - mod) / 16;
        str = arrHex[mod] + str;
    }
    if(str.length == 1)str = '0' + str;
    if(str.length == 0)str = '00';
    return `#${color+str}`;
}

  // 深度拷贝
 function deepClone(obj) {
    // Handle the 3 simple types, and null or undefined
    if (obj == null || typeof obj !== "object") return obj;
  
    // Handle Date
    if (obj instanceof Date) {
      var copy = new Date();
      copy.setTime(obj.getTime());
      return copy;
    }
  
    // Handle Array
    if (obj instanceof Array) {
      var copy = [];
      for (let i = 0, len = obj.length; i < len; ++i) {
        copy[i] = deepClone(obj[i]);
      }
      return copy;
    }
  
    // Handle Object
    if (obj instanceof Object) {
      var copy = {};
      for (const attr in obj) {
        if (obj.hasOwnProperty(attr)) copy[attr] = deepClone(obj[attr]);
      }
      return copy;
    }
  
    throw new Error("Unable to copy obj! Its type isn't supported.");
  }

//灵活排序('property':根据哪一个属性名进行排序，'bol':true(倒叙)，false(顺序))
function SotrPare(property, bol){
	return function(a, b) {
		var value1 =renderTime(a[property]);
		var value2 =renderTime(b[property]);
		if (bol) {
			// 升序
			return Date.parse(value1) - Date.parse(value2);
		} else {
			// 降序
			return Date.parse(value2) - Date.parse(value1)
		}
	}
}

//版本号比较:当第一个版本curV>第二个版本reqV时，返回true
function compare(curV, reqV){
    if (curV && reqV) {
      //将两个版本号拆成数字
      var arr1 = curV.split('.');
      var arr2 = reqV.split('.');
      var minLength = Math.min(arr1.length, arr2.length),
        position = 0,
        diff = 0;
      //依次比较版本号每一位大小，当对比得出结果后跳出循环（后文有简单介绍）
      while (position < minLength && ((diff = parseInt(arr1[position]) - parseInt(arr2[position])) == 0)) {
        position++;
      }
      diff = (diff != 0) ? diff : (arr1.length - arr2.length);
      //若curV大于reqV，则返回true
      // return diff > 0;
      if(diff>0){
        return 1
      }
      else if(diff==0){
        return 0
      }
      else{
        return -1
      }
    }
    else if(curV){
        return 1
    }
    else{
      throw new Error("第一个参数不能为空")
    }
  }

//检测数组中是否存在重复元素，如果出现两次就返回true，如果不存在重复元素则返回false
function containsDuplicate (nums){
    return nums.length!=new Set(nums).size
}

//找出数组内最小的数
function mathMin(arr){
  var min = arr[0];
  for(var i = 1; i < arr.length; i++) {
    if(arr[i] < min) {
      min = arr[i];
    }
  }
  return min;
}


//封装百度翻译（安装js-md5（请求加密），vue-jsonp）-----(先注册，拿到appid与key)
function translate(value, lang){
    let appid = '20210113000670181';
    let key = 'dPWazc8KGYxJSOBgq1jz';
    let salt = (new Date).getTime();
    let query = value;
    //源语言
    let from = 'zh';
    //需要被翻译的语言（目标语言）
    let to = 'en';
    //后续维护可能存在中英文互翻
    if (lang == 'zh') {
        from = 'en';
        to = lang;
    }
    let str = appid + query + salt + key;
    //md5加密，生成签名
    let sign = md5(str);
    return VueJsonp.jsonp("https://api.fanyi.baidu.com/api/trans/vip/translate?q=" + encodeURIComponent(query) + "&from=" + from + "&to=" + to + "&appid=" + appid + "&salt=" + salt + "&sign=" + sign)
}

async function MTtrans(e, lang) {
    if (!e) return ''
    let mactranslate=''
    // 传进来的参数删掉前后空格
    e.replace(/(^\s*)|(\s*$)/g, "")
    const res =await translate(e, lang)
    mactranslate = res.trans_result[0].dst
    return mactranslate
}

//数据扁平化
function getMoreTree(arr){
	let newArr=[];
	for(let i=0;i<arr.length;i++){
		if(arr[i].children){
			newArr.push(...getMoreTree(arr[i].children));
			delete arr[i].children;
		}
		newArr.push({...arr[i]});
	}
	return newArr
}

//将数据处理成树
function getTree(data){
	data.forEach(item=>{
		const children=data.filter(({parentid})=>parentid===item.id)
		if(children.length) item.children=children
	})
	const res=data.filter(({parentid})=>parentid===0)
    res.forEach((item)=>getresultName(item))
	return res
}

//构造children子级目录与子级目录中所对应的父级名称
function getresultName(result,parentName=''){
    result.resName=`${parentName}`+`${result.name}`
    result.parent_name=`${result.name}`
    if(result.children){
        result.children.forEach(i=>getresultName(i,`${result.resName}/`))
    }
}
module.exports={
    escapeThousands,
    deepClone,
    getHexOpacityColor,
    SotrPare,
    compare,
    containsDuplicate,
    mathMin,
    MTtrans,
    getMoreTree,
    getTree
}