I've been reading a bit about injecting a script into an HTML file, mostly here
But I also came across this variation of using the document.write method.
document.write('<scr'+'ipt type="text/javascript" src="' + url + '"></scr'+'ipt>');
What could the advantage be to splitting the <script part of the <script> tag up like <scr'+'ipt?
There aren't any. It is just cargo-culting.
There are problems with having the sequence </script> as data inside a <script> element (since it will act as an end tag and terminate that script element). That, however, is best dealt with by an escape rather then a concatenation: "<\/script>". (Best is slightly subjective, but it is shorter, uses fewer operations and is (IMO) more readable).
The concatenation is a valid alternative to it, and some people have misunderstood the need and applied it to start tags as well as end tags, and then other people have just copy/pasted the results. Hence: cargo cult.
