Add doc piece for joinUrl()

emscripten-core · Oct 12, 2017 · 22b5611 · 22b5611
1 parent 2438656
commit 22b5611
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/src/preamble.js b/src/preamble.js
@@ -936,6 +936,8 @@ function isAbsoluteUrl(url) {
   return /^(?:[a-z]+:)?\/\//i.test(url);
 }
 
+// Joins relative URL 'b' to URL 'a'. 'a' may be empty, in which case 'b' is returned.
+// If 'b' is an absolute URL, then 'a' is ignored and 'b' is returned as-is as well.
 function joinUrl(a, b) {
 #if ASSERTIONS
   if (a && !a.endsWith('/')) throw 'First parameter to joinUrl() should end in /!';