javascript add hour to time
I want to add numbers of hours to time. How can I do this using javascript?
View Answers
May 14, 2012 at 5:17 PM
<html>
<head>
<title>Add hours to current times</title>
<script type="text/javascript">
function addHours() {
var todayDate = new Date();
var hrs = document.getElementById("hrs").value;
var hours = todayDate.getHours();
var newHrs = parseInt(hours) + parseInt(hrs);
var minutes = todayDate.getMinutes();
var seconds = todayDate.getSeconds();
var format = "AM";
if (newHrs > 11) {
format = "PM";
alert(newHrs);
}
if (newHrs > 12) {
newHrs = newHrs - 12;
}
if (newHrs == 0) {
newHrs = 12;
}
if (minutes < 10) {
minutes = "0" + minutes;
}
document.write("Time : " + newHrs + " : " + minutes + " : " + seconds
+ " " + format);
}
</script>
</head>
<body>
<h2>Add hours to current date and display..</h2>
Enter hours :
<input type="text" name="hrs" id="hrs">
<input type="button" value="Add Hours" onclick="addHours();">
</body>
</html>
Description: In javascript whenever you write new Date() it shows the current date in standard format with current day,date,time and GMT.You can have your own format.
getHours() shows hours of specified date.
getMinutes() shows minutes of specified date.
getSeconds() shows seconds of specified date.
Input hours which you want to add into current time.parseInt() is used to convert the value in integer.Simple add hours into the current hour by writing var newHrs = parseInt(hours) + parseInt(hrs);
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