CODEWITHSUNDEEP
javascriptjqueryarraysecmascript-6momentjs
nb_nb_nb
nb_nb_nb

Reputation: 1381

Finding max and min dates using Moment().max and min not working

I have an array of dates and wanted to find the max and min dates in an array.

This is my code:

let date_list = [
"2021-03-19T00:00:00Z", 
"2021-03-20T00:00:00Z", 
"2021-04-12T00:00:00Z", 
"2021-04-13T00:00:00Z",
"2021-04-11T00:00:00Z", 
"2021-04-12T00:00:00Z", 
"2021-03-18T00:00:00Z"
];

let uniq_dates = [...new Set(date_list.map(d => moment.utc(d).format()  ))];
console.log(uniq_dates);

console.log(moment().max(date_list));
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.29.1/moment.min.js" integrity="sha512-qTXRIMyZIFb8iQcfjXWCO8+M5Tbc38Qi5WzdPOYZHIlZpzBHG3L3by84BBBOiRGiEb7KKtAOAs5qYdUiZiQNNQ==" crossorigin="anonymous"></script>

I sometimes get an error that says NaN or I am getting Deprecation warning: moment().max is deprecated, use moment.min instead.

How do I get max and min in an array of dates?

Upvotes: 0

Views: 1694

Answers (2)

Ayaz
Ayaz

Reputation: 2121

You can use this code.

let date_list = [
"2021-03-19T00:00:00Z", 
"2021-03-20T00:00:00Z", 
"2021-04-12T00:00:00Z", 
"2021-04-13T00:00:00Z",
"2021-04-11T00:00:00Z", 
"2021-04-12T00:00:00Z", 
"2021-03-18T00:00:00Z"
];

let moments = date_list.map(d => moment(d)),
maxDate = moment.max(moments)

console.log(maxDate);
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.29.1/moment.min.js" integrity="sha512-qTXRIMyZIFb8iQcfjXWCO8+M5Tbc38Qi5WzdPOYZHIlZpzBHG3L3by84BBBOiRGiEb7KKtAOAs5qYdUiZiQNNQ==" crossorigin="anonymous"></script>

Upvotes: 1

Unmitigated
Unmitigated

Reputation: 89139

You can use Array#reduce in conjunction with moment.max.

let date_list = [
"2021-03-19T00:00:00Z", 
"2021-03-20T00:00:00Z", 
"2021-04-12T00:00:00Z", 
"2021-04-13T00:00:00Z",
"2021-04-11T00:00:00Z", 
"2021-04-12T00:00:00Z", 
"2021-03-18T00:00:00Z"
];

let uniq_dates = [...new Set(date_list.map(d => moment.utc(d).format()  ))];
console.log(uniq_dates);

console.log(uniq_dates.reduce((acc,curr)=>acc.max(curr), moment()));
.as-console-wrapper{max-height:100%!important;top:0}
<script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.29.1/moment.min.js" integrity="sha512-qTXRIMyZIFb8iQcfjXWCO8+M5Tbc38Qi5WzdPOYZHIlZpzBHG3L3by84BBBOiRGiEb7KKtAOAs5qYdUiZiQNNQ==" crossorigin="anonymous"></script>

Upvotes: 1

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