utils2
Version:
validator,_,IO,string,date,numer,array
307 lines (306 loc) • 9.17 kB
JavaScript
const _ = {
/**
* 获取变量类型
*/
type: function (o) {
var _t = typeof o;
return (_t === 'object' ? o === null && 'null' || Object.prototype.toString.call(o).slice(8, -1) : _t).toLowerCase();
},
isFunction: function (o) {
return 'function' === this.type(o);
},
isArray: function (o) {
return 'array' === this.type(o);
},
isString: function (o) {
return 'string' === this.type(o);
},
isDate: function (o) {
return 'date' === this.type(o);
},
isNumber: function (o) {
return 'number' === this.type(o);
},
isRegExp: function (o) {
return 'regexp' === this.type(o);
},
isObject: function (o) {
return 'object' === typeof o;
},
isBoolean: function (o) {
return 'boolean' === this.type(o);
},
isNull: function (o) {
return 'null' === this.type(o);
},
isUndefined: function (o) {
return 'undefined' === this.type(o);
},
isNil: function (o) {
return o === null || o === undefined;
},
isEmpty: function (o) {
return o === '' || this.isNil(o);
},
isEmptyObject: function (o) {
for (var k in o) {
return false;
}
return true;
},
isNaN: function (o) {
return Number.isNaN(o);
},
isError: function (o) {
return 'error' === this.type(o);
},
/**
* 返回属性数组
*/
keys: function (o) {
var res = [];
for (let k in o) {
if (o.hasOwnProperty(k.toString())) {
res.push(k);
}
}
return res;
},
/**
* 过滤字段(返回新的对象)
*/
pick: function (o, arr) {
const res = {};
if (!_.isArray(arr)) {
arr = _.keys(arr);
}
for (let k in o) {
if (o.hasOwnProperty(k) && arr.indexOf(k) !== -1) {
res[k] = o[k];
}
}
return res;
},
/**
* 两个字符串
*/
compare: function (str1, str2) {
let len1 = str1.length,
len2 = str2.length;
for (let i = 0; i < len1 && i < len2; i++) {
if (str1.charCodeAt(i) !== str2.charCodeAt(i)) {
return str1.charCodeAt(i) - str2.charCodeAt(i);
}
}
return len1 - len2;
},
/**
* 阿拉伯数字转汉语数字
*/
num2zh: function (num) {
num = num ? num.toString() : '';
var res = '';
var d = {
'0': '零',
'1': '一',
'2': '二',
'3': '三',
'4': '四',
'5': '五',
'6': '六',
'7': '七',
'8': '八',
'9': '九'
};
for (var i = 0; i < num.length; i++) {
res += d[num[i]];
}
return res;
},
/**
* 数组按指定方法排序
*/
sortBy: function (arrs, func) {
return arrs.sort(func);
},
/**
* 数组中是否有指定项
*/
hasOne: function (arr, func) {
for (let i = arr.length - 1; i >= 0; i--) {
if (true === func(arr[i])) {
return true;
}
}
return false;
},
/**
* 日期对象操作
*/
date: {
YEAR: 'Y',
QUARTER: 'Q',
MONTH: 'M',
DATE: 'D',
DAY: 'W',
HOUR: 'H',
MINUTE: 'I',
SECOND: 'S',
/**
* 将时间按指定格式转为字符串 小写都是阿拉伯数字大写是汉字数字
* 格式首字母大写这转为汉字
* @param {date} date 日期对象
* @param {string} Y/y/YY/yy - 年份 一七/17/二零一七/2017
* @param {string} Q/q - 季度 三/3
* @param {string} M/m/mm - 月 九/9/09
* @param {string} W/w - 周 一/1
* @param {string} D/d/dd - 日 九/9/09
* @param {string} H/h/hh - 时 四/4/04 23
* @param {string} I/i - 分
* @param {string} S/s - 秒
* @return {string} - 格式化的字符串
*/
format: function (date, format) {
var res = format,
m = '',
stack = [],
reg = /\{(\w{1,2})\}/g;
while ((m = reg.exec(format)) !== null) {
if (stack.indexOf(m[1]) === -1) {
stack.push(m[1]);
}
}
for (var i = 0; i < stack.length; i++) {
var k = stack[i];
var bZH = (k.charCodeAt(0) > 96) ? false : true;
var bLong = (k.length === 2 && k[0].toLowerCase() === k[1].toLowerCase()) ? true : false;
var v = null;
switch (k[0].toUpperCase()) {
case this.YEAR:
v = date.getFullYear();
if (bLong === false) {
v = v % 100;
}
break;
case this.QUARTER:
v = Math.floor((date.getMonth() + 3) / 3);
break;
case this.MONTH:
v = date.getMonth() + 1;
break;
case this.DAY:
v = date.getDay();
break;
case this.DATE:
v = date.getDate();
break;
case this.HOUR:
v = date.getHours();
break;
case this.MINUTE:
v = date.getMinutes();
break;
case this.SECOND:
v = date.getSeconds();
break;
default: break;
}
//如果指定最小两位长度则个位数前补零
if (bLong && v < 10) {
v = '0' + v;
}
//如果是大写字母则数字转中文
if (bZH) {
v = _.num2zh(parseInt(v));
}
res = res.replace(new RegExp('{' + k + '}', 'g'), v);
}
return res;
},
/**
* 计算指定格式差值
* @param {Date} date - 要比较的日期
* @param {string} [format=s] - 比较的格式 s/i/h/d/w
* @return {string} - 返回字符串
*/
offset: function (date1, date2, format) {
let t0 = date1.getTime(),
t1 = date2.getTime();
var res = Math.floor((t0 - t1) / 1000);
if (!format) {
format = this.SECOND;
}
switch (format.toUpperCase()) {
case this.MINUTE:
res /= 60;
break;
case this.HOUR:
res /= 60 * 60;
break;
case this.DATE:
res /= 60 * 60 * 24;
break;
case this.DAY:
res /= 60 * 60 * 24 * 7;
break;
default:
break;
}
return Math.floor(res * 10) / 10;
},
/**
* 时间加减计算
* @param {date} date - 日期对象
* @param {int} val - 负数代表日期过去，正数代表日期未来
* @param {int} format - @enum s/i/h/d/w/y 0/1/2/3/4/- 就是没有按月计算的~~
*/
compute: function (date, val, format) {
var ts = Math.ceil(date.getTime() / 1000);
var level = 0;
if (!format) {
format = this.SECOND;
} else {
format = format.toUpperCase();
}
val = parseInt(val) || 0;
switch (format) {
case this.SECOND:
level = 0;
break;
case this.MINUTE:
level = 1;
break;
case this.HOUR:
level = 2;
break;
case this.DATE:
level = 3;
break;
case this.DAY:
level = 4;
break;
case this.YEAR: break;
default: break;
}
if (format === this.YEAR) {
date.setFullYear(date.getFullYear() + val);
} else {
if (level > 0) {
val *= 60;
}
if (level > 1) {
val *= 60;
}
if (level > 2) {
val *= 24;
}
if (level > 3) {
val *= 7;
}
date.setTime((ts + val) * 1000);
}
return date;
}
}
};
module.exports = _;