Get the day of the week according to a date in javascript

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Get the day of the week according to a date in javascript

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I have the following code of a function, I need to get the day of the week from a day that is sent to the function, so I have it:

    diaSemana : function(d){
      var fecha = new Date();
      var dias = ["L", "M", "X", "J", "V", "S", "D"];

      var mes = fecha.getMonth()+1; //obteniendo mes
      var dia = d;
      var ano = fecha.getFullYear(); //obteniendo año
      if(dia<10)
          dia='0'+dia; //agrega cero si el menor de 10
      if(mes<10)
          mes='0'+mes; //agrega cero si el menor de 10
      var fec = (dia+"/"+mes+"/"+ano);

      return dias[fec.valueAsDate.getDay()];
    }

I want to show next to the day number, the name of the day of the week, for that I send it to the function the day.

I'm a newbie in JavaScript.

javascript funciones

asked by Venturo Lévano Adrián 26.05.2018 в 01:34

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1 answer

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score 0 · Accepted Answer

Some things are missing, remember that the week starts on Sunday. Also remember that the dates in English begin with the month. The correct way would be like this:

diaSemana = function(d){
      var fecha = new Date();
      var dias = ["D", "L", "M", "X", "J", "V", "S"];

      var mes = fecha.getMonth()+1; //obteniendo mes
      var dia = d;
      var ano = fecha.getFullYear(); //obteniendo año
      if(dia<10)
          dia='0'+dia; //agrega cero si el menor de 10
      if(mes<10)
          mes='0'+mes //agrega cero si el menor de 10
      var fec = mes+"/"+dia+"/"+ano;
      var day = new Date(fec).getDay();
     
      return dias[day];
    }
    
    console.log(diaSemana(25));