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HTML

              
                <div id="ex4"></div>
























<br><br><a target="_parent" style="font-family:sans-serif; font-size: 18px;color:black" href="http://www.wdisseny.com/lluna/?lang=en#ex_04">See on API page </a>
              
            
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CSS

              
                
              
            
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JS

              
                function load_moon_phases(obj, callback){
    var gets = []
    for (var i in obj){
        gets.push(i + "=" + encodeURIComponent(obj[i]))
    }
    gets.push("LDZ=" + new Date(obj.year, obj.month-1, 1) / 1000)
    var xmlhttp = new XMLHttpRequest()
    var url = "https://www.icalendar37.net/lunar/api/?" + gets.join("&")
    xmlhttp.onreadystatechange = function() {
        if (xmlhttp.readyState == 4 && xmlhttp.status == 200) {
            callback(JSON.parse(xmlhttp.responseText))
        }
    }
    xmlhttp.open("GET", url, true)
    xmlhttp.send()
}
function mark_moon_phases(moon){
    var CSS_selector_identifier = ".contains_day_number" // Put the selector that identifies the boxes that contain the day number in your calendar.
    document.querySelectorAll(CSS_selector_identifier).forEach(function(box, i){
        if (moon.phase[i + 1].isPhaseLimit){           
            var url="data:image/svg+xml;utf8, " + moon.phase[i + 1].svgMini 
            box.style.backgroundImage = 'url("' + url + '")'
            box.style.backgroundSize = "25%"
            box.style.backgroundRepeat = "no-repeat"
            box.style.backgroundPosition = "5px 5px"            
        }
    })
}
    
 
document.addEventListener("DOMContentLoaded", () => {
    var year =  (new Date).getFullYear()
    var month = (new Date).getMonth()   
    create_calendar_to_show_example(year,month)
    var configMoon = {    
        month 		: month + 1,
        year  		: year,    
        lightColor	: "rgb(255,255,100)", 
        shadeColor	: "black" 
    }
    load_moon_phases(configMoon,mark_moon_phases)
})
    
    
    
function create_calendar_to_show_example(year, month){
/*
This function creates a standard calendar to show the example, create yours in the way you think is most convenient (PHP ASP ...).
*/
    var week, box, td
    var table = document.createElement("table")
    table.setAttribute("style", "width:100% ;max-width:700px ;margin:20px auto; font-size:30px; border-collapse:collapse; font-family:sans-serif")
    const first_day_week_sunday = false // true - false
    var tr = document.createElement("tr")
    var th = document.createElement("th")
    th.setAttribute("colspan",7)
    th.innerHTML = 1 + month + "\/" + year
    table.appendChild(tr)
    tr.appendChild(th)    
    var empty_initial_boxes = new Date(year, month, 1).getDay() - (first_day_week_sunday ? 0 : 1)
    var number_days_month = new Date(year, month + 1, 0).getDate()
    var number_weeks_month = Math.ceil((empty_initial_boxes + number_days_month) / 7)
    var index = 0
    var number_day = 0
    for (week = 0 ; week < number_weeks_month ; week++){
        tr = document.createElement("tr")
        for (box = 0 ; box < 7 ; box++){
            td = document.createElement("td")
            td.setAttribute("style","border:1px solid black; width:calc(100% / 7); padding:15px 5px 5px 0px; text-align:right")      
            if (index >= empty_initial_boxes){
                number_day ++
                if (number_day <= number_days_month){
                    td.innerHTML = number_day
                    td.className = "contains_day_number"  // We use this class to identify the boxes containing the day numbers.       
                    td.style.backgroundColor = "darkgray"
                    if ((new Date).getDate() == number_day) td.style.boxShadow = "inset 0 0 0 2px white" // to day
                    if (new Date(year,month,number_day).getDay() == 0){
                      // It's Sunday
                        td.style.backgroundColor = "gray"
                        td.style.color = "white"
                    }
                }
            }
            index ++
            tr.appendChild(td)
        }
        table.appendChild(tr)
    }  
    document.getElementById("ex4").appendChild(table)
}
              
            
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