Widow fix (jQuery)

Widow Fix

(function($) {
		jQuery.fn.widowFix = function(userOptions) {
			var defaults = {
				letterLimit: null,
				prevLimit: null,
				linkFix: false,
				dashes: false
			};
			var wfOptions = $.extend(defaults, userOptions);
			if (this.length) {
				return this.each(function() {
					var $this = $(this);
					var linkFixLastWord;
					if (wfOptions.linkFix) {
						var $linkHolder = $this.find('a:last');
						//find the anchors and wrap them up with a <var> tag to find it later
						$linkHolder.wrap('<var>');
						//store the anchor inside
						var $lastLink = $('var').html();
						//get the real length of the last word
						linkFixLastWord = $linkHolder.contents()[0];
						//remove the anchor
						$linkHolder.contents().unwrap();
					}
					var contentArray = $(this).html().split(' '),
						lastWord = contentArray.pop();
					if (contentArray.length <= 1) {
						// it's a one word element, abort!
						return;
					}
	
					function checkSpace() {
						if (lastWord === '') {
							// trailing space found, pop it off and check again
							lastWord = contentArray.pop();
							checkSpace();
						}
					}
					checkSpace();
					// if contains a dash, use white-space nowrap to stop breaking
					if (wfOptions.dashes) {
						// all 3 dash types: regular, en, em
						var dashes = ['-', '–', '—'];
						$.each(dashes, function(index, dash) {
							if (lastWord.indexOf(dash) > 0) {
								lastWord = '<span style="white-space:nowrap;">' + lastWord + '</span>';
								return false; // break out early
							}
						});
					}
					var prevWord = contentArray[contentArray.length - 1];
					//if linkFix is on, check for the letter limit
					if (wfOptions.linkFix) {
						//if the last word is longer than the limit, stop the script
						if (wfOptions.letterLimit !== null && linkFixLastWord.length >= wfOptions.letterLimit) {
							$this.find('var').each(function() {
								$(this).contents().replaceWith($lastLink);
								$(this).contents().unwrap();
							});
							return;
							//or if the prev word is longer than the limit
						} else if (wfOptions.prevLimit !== null && prevWord.length >= wfOptions.prevLimit) {
							$this.find('var').each(function() {
								$(this).contents().replaceWith($lastLink);
								$(this).contents().unwrap();
							});
							return;
						}
					} else {
						//if the last word is longer than the limit, stop the script
						if (wfOptions.letterLimit !== null && lastWord.length >= wfOptions.letterLimit) {
							return;
						} else if (wfOptions.prevLimit !== null && prevWord.length >= wfOptions.prevLimit) {
							return;
						}
					}
					var content = contentArray.join(' ') + '&nbsp;' + lastWord;
					$this.html(content);
					if (wfOptions.linkFix) {
						//find the var and put the anchor back in, then unwrap the <var>
						$this.find('var').each(function() {
							$(this).contents().replaceWith($lastLink);
							$(this).contents().unwrap();
						});
					}
				});
			}
		};
	})(jQuery);

	// Apply widow fix to H1 tag
	
	$('h1').widowFix();
	$('p').widowFix();