Leap year: Difference between revisions

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<syntaxhighlight lang="javascript">// Month values start at 0, so 1 is for February
<syntaxhighlight lang="javascript">// Month values start at 0, so 1 is for February
var isLeapYear = function (year) { return new Date(year, 1, 29).getDate() === 29; };</syntaxhighlight>
var isLeapYear = function (year) { return new Date(year, 1, 29).getDate() === 29; };</syntaxhighlight>

=={{header|Joy}}==
<syntaxhighlight lang="joy">DEFINE leapyear == dup 100 div null rotate choice 4 rem null.</syntaxhighlight>


=={{header|jq}}==
=={{header|jq}}==