Set max day value to number of days in specified month and year

lulunac27a · lulunac27a · commit d70d6a416a01 · 2024-01-27T23:12:17.000-06:00
diff --git a/datetime-jsp/datetime.html b/datetime-jsp/datetime.html
@@ -9,9 +9,9 @@ <h1>Enter date and time values</h1>
 <body>
 <form method="post" action="datetime.jsp">
     <label for="year">Year:</label><br>
-    <input type="number" name="year" id="year" required><br>
+    <input type="number" name="year" id="year" required onchange="getDaysInMonth()"><br>
     <label for="month">Month:</label><br>
-    <input type="number" name="month" id="month" min="1" max="12" required><br>
+    <input type="number" name="month" id="month" min="1" max="12" required onchange="getDaysInMonth()"><br>
     <label for="day">Day:</label><br>
     <input type="number" name="day" id="day" min="1" max="31" required><br>
     <label for="hour">Hour:</label><br>
diff --git a/datetime-jsp/datetime.js b/datetime-jsp/datetime.js
@@ -44,4 +44,7 @@ function setCurrentUtcDate() {
     millisecond.value = currentUtcMillisecond;
     microsecond.value = 0;
     nanosecond.value = 0;
+}
+function getDaysInMonth() {
+    day.max = new Date(year.value, month.value, 0).getDate();
 }

Original file line number	Diff line number	Diff line change
`@@ -44,4 +44,7 @@ function setCurrentUtcDate() {`
`44`	`44`	`millisecond.value = currentUtcMillisecond;`
`45`	`45`	`microsecond.value = 0;`
`46`	`46`	`nanosecond.value = 0;`
	`47`	`+}`
	`48`	`+function getDaysInMonth() {`
	`49`	`+ day.max = new Date(year.value, month.value, 0).getDate();`
`47`	`50`	`}`