A single word on the last line of a paragraph would usually be called a paragraph widow, but (note that I am using paragraph to cover any separate unit of text, e.g. headings, list items etc.).

Extending my example below:

var headings = document.getElementsByTagName("h1");
	for (var i=0;i<headings.length;i++)
	{
		var h1s = headings[i].innerHTML.split(" ");
        len = h1s[h1s.length-2] + h1s[h1s.length-1];
        if (len.length <= 20)
        {
        	h1s[h1s.length-2] += " " + h1s[h1s.length-1];
       		h1s.pop();
        	headings[i].innerHTML = h1s.join(" ");
        }
	}

It’s set to 20 characters but you could set it lower or higher for your requirements – the script won’t run if it’s higher than 20. :-)


var headings = document.getElementsByTagName("h1");
for (var i=0;i<headings.length;i++)
{
var h1s = headings[i].innerHTML.split(" ");
h1s[h1s.length-2] += "&nbsp;" + h1s[h1s.length-1];
h1s.pop();
headings[i].innerHTML = h1s.join(" ");
}


This example uses h1 but you can easily substitute that for another one. :-)

I’ve run into this problem with sites that deal with a lot of scientific terminology.

Additionally, you could just substitute the non-breaking space between the last two words with wrapping them in an inline element/tag that has that white-space:nowrap; I mentioned, instead of the whole title. I find it cheaper and more fail-proof, in case an user-agent happens to have JS disabled.