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$.textchange plugin
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(function ($) { | |
$.event.special.textchange = { | |
setup: function (data, namespaces) { | |
$(this).bind('keyup', $.event.special.textchange.handler); | |
$(this).bind('cut paste input', $.event.special.textchange.delayedHandler); | |
}, | |
teardown: function (namespaces) { | |
$(this).unbind('keyup', $.event.special.textchange.keyuphandler); | |
$(this).unbind('cut', $.event.special.textchange.cuthandler); | |
}, | |
handler: function (event) { | |
$.event.special.textchange.triggerIfChanged($(this)); | |
}, | |
delayedHandler: function (event) { | |
var element = $(this); | |
setTimeout(function () { | |
$.event.special.textchange.triggerIfChanged(element); | |
}, 25); | |
}, | |
triggerIfChanged: function (element) { | |
if (element.val() !== element.data('lastValue')) { | |
element.trigger('textchange', element.data('lastValue')); | |
element.data('lastValue', element.val()); | |
} | |
} | |
}; | |
$.event.special.hastext = { | |
setup: function (data, namespaces) { | |
var self = this; | |
$(this).bind('textchange', $.event.special.hastext.handler); | |
}, | |
teardown: function (namespaces) { | |
$(this).unbind('textchange', $.event.special.hastext.handler); | |
}, | |
handler: function (event, lastValue) { | |
$.event.special.hastext.check($(this), lastValue); | |
}, | |
check: function (element, lastValue) { | |
if ((lastValue === '' || lastValue === undefined) && lastValue !== element.val()) { | |
element.trigger('hastext'); | |
} | |
} | |
}; | |
$.event.special.notext = { | |
setup: function (data, namespaces) { | |
$(this).bind('textchange', $.event.special.notext.handler); | |
}, | |
teardown: function (namespaces) { | |
$(this).unbind('textchange', $.event.special.notext.handler); | |
}, | |
handler: function (event, lastValue) { | |
if ($(this).val() === '' && $(this).val() !== lastValue) { | |
$(this).trigger('notext'); | |
} | |
} | |
}; | |
})(jQuery); |
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More info: http://www.zurb.com/playground/jquery-text-change-custom-event