70 lines
2.2 KiB
JavaScript
70 lines
2.2 KiB
JavaScript
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function isNaturalNumber (str) {
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var pattern = /^(0|([1-9]\d*))$/;
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return pattern.test(str);
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}
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function calculate(){
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let year = document.getElementById("year").value;
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if (isNaturalNumber(year) == false){
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document.getElementById("result").textContent = "Błąd. Podano nieodpowiedni ciąg znaków!"
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}
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else if (year < 1900 || year > 2099){
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document.getElementById("result").textContent = "Błąd. Podano rok spoza zakresu 1900-2099!"
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}
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else{
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let a, b, c, d, e, p, q, month;
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p = 24;
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q = 5;
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month = 3;
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a = year % 19;
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b = year % 4;
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c = year % 7;
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d = ((19 * a) + p) % 30;
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e = ((2 * b) + (4 * c) + (6 * d) + q) % 7;
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result = d + e + 22;
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if (result > 31){
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result = result - 31;
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month += 1;
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}
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if (result > 25 && month == 4){
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result = result - 7;
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}
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document.getElementById("result").textContent = `Data wielkanocy: ${result}.0${month}.${year}`;
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}
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}
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// d
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// function calculate() {
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// let year = document.getElementById("year").value;
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// if (isNaturalNumber(year) == false) {
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// document.getElementById("result").textContent = "Błąd. Podano nieodpowiedni ciąg znaków!"
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// }
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// else if (year < 1 || year > 5000) {
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// document.getElementById("result").textContent = "Błąd. Podano rok spoza zakresu 1-5000!"
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// }
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// else {
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// let a, b, c, d, e, f, g, h, i, k, l, m, month, day;
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// a = year % 19;
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// b = Math.floor(year / 100);
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// c = year % 100;
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// d = Math.floor(b / 4);
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// e = b % 4;
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// f = Math.floor((b + 8) / 25);
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// g = Math.floor((b - f + 1) / 3);
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// h = (19 * a + b - d - g + 15) % 30;
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// i = Math.floor(c / 4);
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// k = c % 4;
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// l = (32 + 2 * e + 2 * i - h - k) % 7;
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// m = Math.floor((a + 11 * h + 22 * l) / 451);
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// month = Math.floor((h + l - 7 * m + 114) / 31);
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// day = ((h + l - 7 * m + 114) % 31) + 1;
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// document.getElementById("result").textContent = `Data wielkanocy: ${day.toString().padStart(2, '0')}.${month.toString().padStart(2, '0')}.${year}`;
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// }
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// }
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