From cb729625ae2d5eff54a162e9a9c2c4f78ef83dd2 Mon Sep 17 00:00:00 2001
From: Juriy Zaytsev <juriy@ny3-11-132.dhcp.ithaka.org>
Date: Thu, 7 May 2009 15:33:13 -0400
Subject: [PATCH] Use native `String.prototype.trim` in `String.prototype.trim`
 when available. (kangax)

---
 src/lang/string.js | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/lang/string.js b/src/lang/string.js
index 6d715c1..2798bcc 100644
--- a/src/lang/string.js
+++ b/src/lang/string.js
@@ -407,7 +407,9 @@ Object.extend(String.prototype, (function() {
     sub:            sub,
     scan:           scan,
     truncate:       truncate,
-    strip:          strip,
+    // Firefox 3.5+ supports String.prototype.trim
+    // (`trim` is ~ 5x faster than `strip` in FF3.5)
+    strip:          String.prototype.trim ? String.prototype.trim : strip,
     stripTags:      stripTags,
     stripScripts:   stripScripts,
     extractScripts: extractScripts,