Text entry character count and truncate contenteditable

gistfile1.js

/* -------------------------------------- */
//Char count & truncate

var $charCount = $("[data-char-count]");
$charCount.each(function () {

	var $this = $(this),
		$charSelector = $($this.attr("data-char-count")),
		charMax = $this.attr("data-char-count-max") || false;

	$charSelector
	.on("keyup", function() {

		var $that = $(this),
			charLength = $that.val().length,
			charCountText = charLength;

		if (charMax) {
			charCountText = charLength + " / " + charMax; // + " characters used";
		}
		
		if( $that.val().length > parseInt(charMax) ) {
			$this
			.addClass("too-many-chars");

			if ($this.attr("data-truncate")) {
				var val = $charSelector.val();
				$charSelector
				.val( val.substring(0, parseInt(charMax)) );
			}

		} else {
			$this
			.removeClass("too-many-chars");
		}

		$this
		.html(charCountText);

	})
	.trigger("keyup");

});