To build jQuery, you need to have the latest Node.js/npm and git 1.7 or later. Earlier versions might work, but are not supported. For Windows, you have to download and install git and Node.js. OS X users should install Homebrew. Once Homebrew is installed, run brew install git to install git, and brew install node to install Node.js. Linux/BSD users should use their appropriate package managers to install git and Node.js, or build from source if you swing that way. Easy-peasy. Special builds can be created that exclude subsets of jQuery functionality. This allows for smaller custom builds when the builder is certain that those parts of jQuery are not being used. For example, an app that only used JSONP for $.ajax() and did not need to calculate offsets or positions of elements could exclude the offset and ajax/xhr modules. Any module may be excluded except for core, and selector. To exclude a module, pass its path relative to the src folder (without the .js extension). Some example modules that can be excluded are: Note: Excluding Sizzle will also exclude all jQuery selector extensions (such as effects/animatedSelector and css/hiddenVisibleSelectors). The build process shows a message for each dependent module it excludes or includes. As an option, you can set the module name for jQuery's AMD definition. By default, it is set to "jquery", which plays nicely with plugins and third-party libraries, but there may be cases where you'd like to change this. Simply set the "amd" option: For questions or requests regarding custom builds, please start a thread on the Developing jQuery Core section of the forum. Due to the combinatorics and custom nature of these builds, they are not regularly tested in jQuery's unit test process. The non-Sizzle selector engine currently does not pass unit tests because it is missing too much essential functionality.

Presidents Day

Presidents DayPresidents’ Day is an American holiday celebrated on the third Monday in February. Originally established in 1885 in recognition of President George Washington, it is still officially called “Washington’s Birthday” by the federal government. Traditionally celebrated on February 22—Washington’s actual day of birth—the holiday became popularly known as Presidents’ Day after it was moved as part of 1971’s Uniform Monday Holiday Act, an attempt to create more three-day weekends for the nation’s workers. While several states still have individual holidays honoring the birthdays of Washington, Abraham Lincoln and other figures, Presidents’ Day is now popularly viewed as a day to celebrate all U.S. presidents past and present.

The story of Presidents’ Day date begins in 1800. Following President George Washington’s death in 1799, his February 22 birthday became a perennial day of remembrance. At the time, Washington was venerated as the most important figure in American history, and events like the 1832 centennial of his birth and the start of construction of the Washington Monument in 1848 were cause for national celebration.

While Washington’s Birthday was an unofficial observance for most of the 1800s, it was not until the late 1870s that it became a federal holiday. Senator Steven Wallace Dorsey of Arkansas was the first to propose the measure, and in 1879 President Rutherford B. Hayes signed it into law. The holiday initially only applied to the District of Columbia, but in 1885 it was expanded to the whole country. At the time, Washington’s Birthday joined four other nationally recognized federal bank holidays—Christmas Day, New Year’s Day, Independence Day and Thanksgiving—and was the first to celebrate the life of an individual American. Martin Luther King Jr. Day, signed into law in 1983, would be the second.

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