Use document.baseURI instead of location.href

[stbuehler]

In https://github.com/getify/LABjs/blob/master/LAB.src.js#L18 root_page is calculated from location.href; it should use document.baseURI instead (or document.baseURI || location.href ?) as relative urls should be relative to the base uri, which can be changed with <base href=...>.

[getify]

I have been asked to do this before, but it was an intentional design choice way back at the beginning, not a mistake, not to support LABjs being relative to the <base> tag of a page. Back then, <base> tags were a big problem for IE6, and moreover, back then (at least), IE didn't support document.baseURI.

So I elected to instead add the BasePath configuration to allow relative URLs. Note: the BasePath should be absolute, and not relative (as it itself would be considered relative to the page, which will likely produce strange results).

LAB.setGlobalDefaults({ BasePath: "http://some.tld/other/path" });

// or

LAB.setOptions({ BasePath: "http://some.tld/other/path" })
.script(...)
...

So, if you set the LAB configuration BasePath to the same as the absolute value in your <base> tag, you should get your desired behavior, and that should be reliable across all browsers. Moreover, if you're using <base> for only your script tags, LABjs' configuration makes <base> unnecessary. :)