Javascript 如何使用moment.js从日期列表中获取最小或最大日期？
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how to get min or max dates from a list of dates using moment.js?
提问by Subhojit
I want to have the max date from the list of dates given in the handleClickfunction. How to find the max date from the list of dates using moment.js?
我想从handleClick函数中给出的日期列表中获得最大日期。如何使用moment.js从日期列表中找到最大日期？
I have the following code:
我有以下代码：
import React, {Component} from 'react';
import moment from 'moment';
class Getdate extends Component
{
constructor() {
super();
this.state = {
dates = []
}
this.handleClick = this.handleClick.bind(this);
}
handleClick() {
this.state.dates = ['2017-11-12', '2017-10-22', '2015-01-10', '2018-01-01', '2014-10-10'];
console.log(this.state.dates);
}
render{
return (
<button onClick={this.handleClick}>Get Max Date</button>
)
}
}
export default Getdate
回答by Jimmy
You can use moment.maxfunction :
您可以使用moment.max函数：
let moments = this.state.dates.map(d => moment(d)),
maxDate = moment.max(moments)
回答by Luka
Sort them with a custom compartor, then select the first one (or last, try it out);
使用自定义比较器对它们进行排序，然后选择第一个（或最后一个，尝试一下）；
array.sort(function(d1, d2) {
return moment(d1).isBefore(moment(d2));
});
