48 lines
1.0 KiB
JavaScript
48 lines
1.0 KiB
JavaScript
|
// Copyright 2014 Simon Lydell
|
||
|
|
// X11 (“MIT”) Licensed. (See LICENSE.)
|
||
|
|
|
||
|
|
void (function(root, factory) {
|
||
|
|
if (typeof define === "function" && define.amd) {
|
||
|
|
define(factory)
|
||
|
|
} else if (typeof exports === "object") {
|
||
|
|
module.exports = factory()
|
||
|
|
} else {
|
||
|
|
root.resolveUrl = factory()
|
||
|
|
}
|
||
|
|
}(this, function() {
|
||
|
|
|
||
|
|
function resolveUrl(/* ...urls */) {
|
||
|
|
var numUrls = arguments.length
|
||
|
|
|
||
|
|
if (numUrls === 0) {
|
||
|
|
throw new Error("resolveUrl requires at least one argument; got none.")
|
||
|
|
}
|
||
|
|
|
||
|
|
var base = document.createElement("base")
|
||
|
|
base.href = arguments[0]
|
||
|
|
|
||
|
|
if (numUrls === 1) {
|
||
|
|
return base.href
|
||
|
|
}
|
||
|
|
|
||
|
|
var head = document.getElementsByTagName("head")[0]
|
||
|
|
head.insertBefore(base, head.firstChild)
|
||
|
|
|
||
|
|
var a = document.createElement("a")
|
||
|
|
var resolved
|
||
|
|
|
||
|
|
for (var index = 1; index < numUrls; index++) {
|
||
|
|
a.href = arguments[index]
|
||
|
|
resolved = a.href
|
||
|
|
base.href = resolved
|
||
|
|
}
|
||
|
|
|
||
|
|
head.removeChild(base)
|
||
|
|
|
||
|
|
return resolved
|
||
|
|
}
|
||
|
|
|
||
|
|
return resolveUrl
|
||
|
|
|
||
|
|
}));
|