使用momentjs从范围内获取数月和数周
使用momentjs从范围内获取数月和数周
提问于 2019-03-04 21:20:50
如果我有类似这样的东西：
let start = moment('2019-01-27');
let end = moment('2019-02-28');我如何才能得到真正的月份开始和结束以及星期开始和结束，这样我就可以计算这些周和月内的一些数据。我平日里有这个：
getWeekdays(data, labels) {
let start = moment(this.$store.state.labels[0]);
let end = moment(this.$store.state.labels[this.$store.state.labels.length - 1]);
let new_labels = ['Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday', 'Sunday'];
let store_labels = this.$store.state.labels;
let store_data = this.$store.state.data;
let new_data = [];
for(let i=1; i<8; i++) {
var arr = [];
let tmp = start.clone().day(i);
if( tmp.isAfter(start, 'd') ){
arr.push(tmp.format('YYYY-MM-DD'));
}
while( tmp.isBefore(end) ){
tmp.add(7, 'days');
arr.push(tmp.format('YYYY-MM-DD'));
}
arr.pop();
let count = 0;
_.forEach(arr, function(val) {
let key = store_labels.findIndex(function(i){return i === val});
count = count + store_data[key];
});
new_data.push(count);
}
console.log(new_data);
return {data: new_data, labels: new_labels};
}data = [1,2,5,3,8]和labels = ['2019-01-27','2019-01-28','2019-01-29','2019-01-30','2019-01-31']在哪里工作，但我不确定如何做到这一点几个月甚至几个星期。
回答 1
Stack Overflow用户
发布于 2019-03-04 22:40:17
这是几个月来的答案，如果有人需要:D
let new_range = {};
_.forEach(labels, function(value, key) {
new_range[moment(value).format('YYYY MM')] = [];
});
_.forEach(labels, function(value, key) {
new_range[moment(value).format('YYYY MM')].push(data[key]);
});
let new_labels = Object.keys(new_range);
let new_data = [];
_.forEach(new_range, function(value, key) {
new_data.push(_.sumBy(value, function(n) {return n;}));
});
return {data: new_data, labels: new_labels};在一整天之后，这里是一个真正的星期：
const range = ['2019-01-22', '2019-01-23', '2019-01-24', '2019-01-25', '2019-01-26', '2019-01-27', '2019-01-28', '2019-01-29', '2019-01-30', '2019-01-31', '2019-02-01', '2019-02-02', '2019-02-03', '2019-02-04', '2019-02-05', '2019-02-06', '2019-02-07', '2019-02-08', '2019-02-09', '2019-02-10', '2019-02-11', '2019-02-12', '2019-02-13', '2019-02-14', '2019-02-15', '2019-02-16', '2019-02-17', '2019-02-18', '2019-02-19', '2019-02-20', '2019-02-21', '2019-02-22', '2019-02-23', '2019-02-24', '2019-02-25', '2019-02-26', '2019-02-27', '2019-02-28', '2019-03-01'];
const backup = ['2019-01-22', '2019-01-23', '2019-01-24', '2019-01-25', '2019-01-26', '2019-01-27', '2019-01-28', '2019-01-29', '2019-01-30', '2019-01-31', '2019-02-01', '2019-02-02', '2019-02-03', '2019-02-04', '2019-02-05', '2019-02-06', '2019-02-07', '2019-02-08', '2019-02-09', '2019-02-10', '2019-02-11', '2019-02-12', '2019-02-13', '2019-02-14', '2019-02-15', '2019-02-16', '2019-02-17', '2019-02-18', '2019-02-19', '2019-02-20', '2019-02-21', '2019-02-22', '2019-02-23', '2019-02-24', '2019-02-25', '2019-02-26', '2019-02-27', '2019-02-28', '2019-03-01'];
const data = [5,2,3,1,5,5,2,3,1,5,5,2,3,1,5,5,2,3,1,5,5,2,3,1,5,5,2,3,1,5,5,2,3,1,5,5,2,3,1];
console.log(bindData(data, backup, getWeeks(range)));
function bindData(data, range, labels) {
let new_data = {};
Object.keys(labels).forEach(function(val) {
let count = 0;
for(let j = 0; j<labels[val].length; j++) {
for(let i = 0; i<range.length; i++) {
if(labels[val][j] == range[i]) {
count = count + data[i];
}
}
}
new_data[val] = count;
});
return new_data;
}
function getWeeks(labels) {
let start = moment(labels[0]);
let new_range = {};
var arr = [];
let tmp = start.clone().day(7);
let sunday = tmp.format('YYYY-MM-DD');
let sunday_index = labels.indexOf(sunday);
if(sunday_index === -1) {
new_range[sunday] = labels;
}else{
let first_week = labels.slice(0, sunday_index + 1);
new_range[first_week[first_week.length - 1]] = first_week;
labels.splice(0, sunday_index + 1);
let last_days = labels.length % 7;
if(last_days != 0) {
let last_week = labels.splice(labels.length - last_days, last_days);
new_range[last_week[last_week.length - 1]] = last_week;
}
for(let i = 0; i<labels.length; i++) {
let a = 0;
new_range[labels[6]] = labels.splice(a, 7);
}
}
return new_range;
}现在，由于某些原因，我需要有双标签数组，如果我使用了其中的一个，我将在bindData函数中得到空数组。如果你知道为什么。编辑它。
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原文链接：
https://stackoverflow.com/questions/54984188
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