more oddities

JavaScript is full of oddities .. I definitely wouldn't claim everything works "as it should" .. you don't have to include the gotcha's but I don't know, they're not that confusing for me.

javascript.html.markdown

@@ -105,6 +105,10 @@ null == undefined; // = true
 "5" === 5; // = false
 null === undefined; // = false 
 
+// ...which can result in some weird behaviour...
+13 + !0; // 14
+"13" + !0; // '13true'
+
 // You can access characters in a string with charAt
 "This is a string".charAt(0);  // = 'T'