How do I convert the value of an "input type week" into date or numeric

Question

I have an element in html5:

<input class="form-control" #semana="ngModel" name="semana" [(ngModel)]="detalle.semana" type="week">

The value I get is a string "2018-W23" for example. What I want is to get the value in date or number entered to perform operations on it (add or subtract days) and save it in my database.

I am working with Angular 5, JAVA spring and MySQL

yes, the theme is to be able to manipulate that value, but it takes it as a string and I want to convert it to date or number — NicoGuevaraAtuq, Jul 12 '18 at 12:42
I upload the inverse process, go from date to week that can also be of great help https://stackoverflow.com/questions/35474506/angular-2-date-pipe-weeknumber — NicoGuevaraAtuq, Jul 12 '18 at 23:01

score 2 · Accepted Answer · answered Jul 12 '18 at 12:42

You need a conversion function to get a Date object from your week input.

See this discussion : javascript calculate date from week number

It appears there is no standard JS function to do that, so you have to implement your own function (again, see discussion - link above) to parse the week input into a Date object.

Then with your Date object it will be convenient to do operations (add days etc) and save it to your database.

score 0 · Answer 2 · answered Sep 30 '22 at 21:54

0

For anyone looking how to do it in Javascript, you can easily do so using moment.js.

moment( document.querySelector("#weekInput").value ).format("yyyy/MMMM/DD")

answered Sep 30 '22 at 21:54

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How do I convert the value of an "input type week" into date or numeric

2 Answers2