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Leandro Severino
12,674 PointsWhat does "$()" mean?
I was checking the docs of one library and it has codes like...
$().w2grid(config.grid2); URL: http://w2ui.com/web/demos/#!combo/combo-1
I want to know what the $() does.
Steven Parker
220,415 PointsIt is not a shorthand for "$(document).ready()" unless it is given a callback function as an argument ("$(callback)").
2 Answers
Steven Parker
220,415 Points"$()" is a shorthand for "jquery()".
Here's an excerpt from the jQuery API manual:
jQuery()— which can also be written as$()— searches through the DOM for any elements that match the provided selector and creates a new jQuery object that references these elements: If no elements match the provided selector, the new jQuery object is "empty"; that is, it contains no elements and has .length property of 0
In this case, the empty jQuery object is being used to access the w2grid method of the w2ui jQuery plug-in.
Leandro Severino
12,674 PointsThanks! I'm just confused coz I don't know the reason(yet) for using "$()" which just returns an empty set.
Unsubscribed User
3,074 PointsUnsubscribed User
3,074 PointsThat is most likely jQuery shorthand for $(document).ready();
So the script will only execute once the DOM has been fully loaded/finished loading