如何从月份过滤今天

Question

I have two functions:

filterToday(documents) {
      return documents.filter((document) => {
        return (
          new Date(document.date).getDate() === new Date().getDate() &&
          new Date(document.date).getMonth() === new Date().getMonth() &&
          new Date(document.date).getFullYear() === new Date().getFullYear()
        );
      });
    }, 

and

filterThisMonth(documents) {
      return documents.filter((document) => {
        return (
          new Date(document.date).getMonth() === new Date().getMonth() &&
          new Date(document.date).getFullYear() === new Date().getFullYear()
        );
      });
    },

I want to filter today from this month using the function that I created to find today. How can I do that in most efficient way?

Answer 1

You should create functions that test/match a specific date with a specific document and the use those in your filter calls.

For the testing functions you can use .toLocaleDateString which supports formatting option, and create the format you want to compare for each scenario.

something like

 function matchDate(document, date) { const documentDate = new Date(document.date); const options = { year: 'numeric', month: '2-digit', day: '2-digit' }; return date.toLocaleDateString('en-US', options) === documentDate.toLocaleDateString('en-US', options); } function matchYearMonth(document, date) { const documentDate = new Date(document.date); const options = { year: 'numeric', month: '2-digit' }; return date.toLocaleDateString('en-US', options) === documentDate.toLocaleDateString('en-US', options); } filterToday(documents) { const today = new Date(); return documents.filter(document => { return matchToday(document, today) }); } filterThisMonth(documents) { const today = new Date(); return documents.filter((document) => { return matchYearMonth(document, today) &&,matchToday(document; today) }), },