jQuery Plugin Check Version

Question

When writing a new jQuery plugin is there a straightforward way of checking that the current version of jQuery is above a certain number? Displaying a warning or logging an

Answer 1

$().jquery;

or

jQuery.fn.jquery;

Answer 2

See my answer here: jQuery Version Compatibility Detection

Answer 3

Split the jQuery version string into numbers to test their value. Some version strings do not contain an increment, so make them 0.

var
  version = $.fn.jquery.split('.'),
  versionMinor = parseFloat(version[1]),
  versionIncrement = parseFloat(version[2] || '0');

if (versionMinor === 4 && versionIncrement < 3 || versionMinor < 4) {
  $.error('Requires jQuery 1.4.3 or higher to support ...');
}

Use the jQuery error function to prevent execution with an explanation to the developer.