JavaScript setFullYear() Method : Date Object
Description
The setFullYear() method is used to set the full year for a given date according to local time.
Version
Implemented in JavaScript 1.3
Syntax
setFullYear(yearValue, monthValue, dayValue)
Parameters
yearValue: An integer specifying the numeric value of the year, for example, 1995.
monthValue: An integer between 0 and 11 representing the months January through December.
dayValue: An integer between 1 and 31 representing the day of the month. If you specify the dayValue parameter, you must also specify the monthValue.
Example:
In the following web document setFullYear() method sets the year to 2009 of a given date.
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<meta http-equiv="content-type" content="text/html; charset=iso-8859-1" />
<title>JavaScript date object - setFullYear() method example</title>
</head>
<body>
<h1 style="color: red">JavaScript date object : setFullYear() method</h1>
<hr />
<script type="text/javascript">
//This is done to make the following JavaScript code compatible to XHTML. <![CDATA[
user_date = new Date("August 12, 1992 21:20:00")
document.write("Before Year Change : "+user_date+"<BR />")
cmm = user_date.setFullYear(2009)
document.write("After changing Year 1992 to Aug. 2009 : "+user_date+"<BR />")
//]]>
</script>
</body>
</html>
View the example in the browser
Supported Browser
| Internet Explorer 7 | Firefox 3.6 | Google Chrome 7 | Safari 5.0.1 | Opera 10 |
| Yes | Yes | Yes | Yes | Yes |
See also:
JavaScript Core objects, methods, properties.
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JavaScript: Tips of the Day
Reduce method
[1, 2, 3, 4].reduce((x, y) => console.log(x, y));
The first argument that the reduce method receives is the accumulator, x in this case. The second argument is the current value, y. With the reduce method, we execute a callback function on every element in the array, which could ultimately result in one single value.
In this example, we are not returning any values, we are simply logging the values of the accumulator and the current value.
The value of the accumulator is equal to the previously returned value of the callback function. If you don't pass the optional initialValue argument to the reduce method, the accumulator is equal to the first element on the first call.
On the first call, the accumulator (x) is 1, and the current value (y) is 2. We don't return from the callback function, we log the accumulator and current value: 1 and 2 get logged.
If you don't return a value from a function, it returns undefined. On the next call, the accumulator is undefined, and the current value is 3. undefined and 3 get logged.
On the fourth call, we again don't return from the callback function. The accumulator is again undefined, and the current value is 4. undefined and 4 get logged.
Ref: https://bit.ly/323Y0P6
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