frontend/src/utils.js

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2022-05-18 18:37:20 +08:00
/* 去重 */
export function deWeightThree(data, key) {
let map = new Map()
for (let item of data) {
if (!map.has(item[key])) {
map.set(item[key], item)
}
}
return [...map.values()]
}
/* uuid生成器 */
export function uuid(len, radix) {
var chars =
'0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz'.split('')
var uuid = [],
i
radix = radix || chars.length
if (len) {
// Compact form
for (i = 0; i < len; i++) uuid[i] = chars[0 | (Math.random() * radix)]
} else {
// rfc4122, version 4 form
var r
// rfc4122 requires these characters
uuid[8] = uuid[13] = uuid[18] = uuid[23] = '-'
uuid[14] = '4'
// Fill in random data. At i==19 set the high bits of clock sequence as
// per rfc4122, sec. 4.1.5
for (i = 0; i < 36; i++) {
if (!uuid[i]) {
r = 0 | (Math.random() * 16)
uuid[i] = chars[i == 19 ? (r & 0x3) | 0x8 : r]
}
}
}
return uuid.join('')
}
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//计算两个时间差 返回天
export function timeDiff(begin_time, end_time) {
//年月日时分秒转换为时间戳
let beginTime = new Date(begin_time).getTime() / 1000
let endTime = new Date(end_time).getTime() / 1000
var starttime = ''
var endtime = ''
if (beginTime < endTime) {
starttime = beginTime
endtime = endTime
} else {
starttime = endTime
endtime = beginTime
}
//计算天数
var timediff = endtime - starttime
var days = parseInt(timediff / 86400)
//计算小时数
var remain = timediff % 86400
var hours = parseInt(remain / 3600)
//计算分钟数
var remain = remain % 3600
var mins = parseInt(remain / 60)
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var res = Number(days + 1)
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return res
}