From eec1cc7a37e04f9c4195ede0233ed773f2e964a9 Mon Sep 17 00:00:00 2001
From: Adam Chlipala <adam@chlipala.net>
Date: Mon, 21 Apr 2014 12:09:58 -0400
Subject: Change <active> to avoid generating an empty <span> for empty content

---
 lib/js/urweb.js | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

(limited to 'lib/js')

diff --git a/lib/js/urweb.js b/lib/js/urweb.js
index 2e350378..fe628130 100644
--- a/lib/js/urweb.js
+++ b/lib/js/urweb.js
@@ -1009,8 +1009,6 @@ function active(s) {
     if (suspendScripts)
         return;
 
-    var span = document.createElement("span");
-    addNode(span);
     var ms = maySuspend;
     maySuspend = false;
     try {
@@ -1020,7 +1018,11 @@ function active(s) {
         throw e;
     }
     maySuspend = ms;
-    setInnerHTML(span, html);
+    if (html != "") {
+        var span = document.createElement("span");
+        addNode(span);
+        setInnerHTML(span, html);
+    }
 }
 
 function input(x, s, recreate, type, name) {
-- 
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