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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 | /*
* Auto Grow Textarea Plugin
* by Jevin 5/11/2010
* http://www.technoreply.com/autogrow-textarea-plugin/
*
* Modified by Rob G (aka Fudgey/Mottie)
* - Converted into a plugin
* - Added ability to calculate approximate # cols when textarea is set to 100%
*
* Simplified by Brian Granger on 5/2/2011
*/
(function($) {
$.fn.autogrow = function() {
var grow = function(d) {
var linesCount = 0;
// modified split rule from
// http://stackoverflow.com/questions/2035910/how-to-get-the-number-of-lines-in-a-textarea/2036424#2036424
var lines = d.txt.value.split(/\r|\r\n|\n/);
linesCount = lines.length;
if (linesCount >= d.rowsDefault) {
d.txt.rows = linesCount;
} else {
d.txt.rows = d.rowsDefault;
}
};
return this.each(function() {
var d = {
colsDefault : 0,
rowsDefault : 1,
txt : this,
$txt : $(this)
};
d.txt.onkeyup = function() {
grow(d);
};
grow(d);
});
};
})(jQuery);
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