btna = [
    {
      "id":"#btn123",
      "formId" : "#wpcf7-f4849-p4850-o1",
      'openTime' : "June 23, 2019 14:00:00",
      'closeTime' : "June 23, 2019 14:00:00",
    },
    {
      "id":"#btn1234",
      "formId" : "#wpcf7-f4940-p4850-o2",
      'openTime' : "June 23, 2019 14:00:00",
      'closeTime' : "June 25, 2019 14:00:00",
    },
    {
      "id":"#btn12345",
      "formId" : "#wpcf7-f4941-p4850-o3",
      'openTime' : "June 23, 2019 14:00:00",
      'closeTime' : "June 28, 2019 14:00:00",
    }
  ]
  $(document).ready(function(){
    let openTime
    let closeTime
    let button
    let itemForm
    let now = Date.now();
    btna.map(function(item){
      openTime = (new Date(item.openTime)).getTime()
            closeTime = (new Date(item.closeTime)).getTime()
      button = $( item.id )
      itemForm = $( item.formId )
      if (closeTime > now && openTime < now ) {
        // Button in correct time period
        button.addClass("active")

        itemForm.hide()
        button.click(function(){
           $( item.formId ).toggle(250)
        })
      }else{
        // Button is'nt in its time period
        button.addClass("ex1")
        itemForm.hide()
      }
    })
  })

let openTime= new Date("June 23, 2019 14:00:00");
    let closeTime= new Date("June 26, 2019 14:00:00");
    btna = [
        {
            "id":"#btn123",
            "formId" : "#wpcf7-f4849-p4850-o1",
            'openTime' : openTime,
            'closeTime' : closeTime,
        },
        {
            "id":"#btn1234",
            "formId" : "#wpcf7-f4940-p4850-o2",
            'openTime' : openTime.setDate(openTime.getDate() + 7),
            'closeTime' : closeTime.setDate(openTime.getDate() + 7),
        },
        {
            "id":"#btn12345",
            "formId" : "#wpcf7-f4941-p4850-o3",
            'openTime' : openTime.setDate(openTime.getDate() + 7),
            'closeTime' : closTime.setDate(openTime.getDate() + 7),
        }
    ]

    $(document).ready(function(){
        let button
        let itemForm
        let now = Date.now();
        btna.map(function(item){
            openTime = (new Date(item.openTime)).getTime()
            closeTime = (new Date(item.closeTime)).getTime()
            button = $( item.id )
            itemForm = $( item.formId )
            if (openTime < now && closeTime > now) {
                // Button in correct time period
                button.addClass("active")

                itemForm.hide()
                button.click(function(){
                     $( item.formId ).toggle(250)
                })
            }else{
                // Button is'nt in its time period
                button.addClass("hide")
                itemForm.hide()
            }
        })
    })

let openTime += 7
    let closeTime += 7