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Javascript variable to return 'A' but 'B' when converted to string.

View ab.js
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// Answer for http://twitter.com/DmitryBaranovsk/status/24339436227
// Question: #jsquiz var a = …; Define a, so those alerts will work like that: alert(a + ""); // alerts "A"; alert(a); // alerts "B";
 
var a={toString:function(){return 'B'},valueOf:function(){return 'A'}};
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