Logical operator && and two strings in javascript

Question

When I use the logical operator && between two strings, why does it give me the second string as output:

Answer 1

Answer by @naomik pretty much covers it. If you want to go deep, I suggest taking a look at the ECMAScript specification, section 11.11:

http://www.ecma-international.org/ecma-262/5.1/#sec-11.11

In the "Semantics" section, we can see:

The production LogicalANDExpression : LogicalANDExpression && BitwiseORExpression is evaluated as follows:

1. Let lref be the result of evaluating LogicalANDExpression.
2. Let lval be GetValue(lref).
3. If ToBoolean(lval) is false, return lval.
4. Let rref be the result of evaluating BitwiseORExpression.
5. Return GetValue(rref).