Update utf8_encode.js

Atry · Atry · commit 53fd76712f28 · 2013-10-18T17:11:23.000+08:00
diff --git a/functions/xml/utf8_encode.js b/functions/xml/utf8_encode.js
@@ -35,16 +35,16 @@ function utf8_encode (argString) {
          (c1 >> 6)        | 192,
         ( c1        & 63) | 128
       );
-    } else if (c1 & 0xF800 != 0xD800) {
+    } else if ((c1 & 0xF800) != 0xD800) {
       enc = String.fromCharCode(
          (c1 >> 12)       | 224,
         ((c1 >> 6)  & 63) | 128,
         ( c1        & 63) | 128
       );
     } else { // surrogate pairs
-      if (c1 & 0xFC00 != 0xD800) { throw new RangeError("Unmatched trail surrogate at " + n); }
+      if ((c1 & 0xFC00) != 0xD800) { throw new RangeError("Unmatched trail surrogate at " + n); }
       var c2 = string.charCodeAt(++n);
-      if (c2 & 0xFC00 != 0xDC00) { throw new RangeError("Unmatched lead surrogate at " + (n-1)); }
+      if ((c2 & 0xFC00) != 0xDC00) { throw new RangeError("Unmatched lead surrogate at " + (n-1)); }
       c1 = ((c1 & 0x3FF) << 10) + (c2 & 0x3FF) + 0x10000;
       enc = String.fromCharCode(
          (c1 >> 18)       | 240,
