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Javascript Logic Operators

var x = true,
 y = false;

AND

This operator will return true if both of the expressions evaluate to true. This boolean operator will employ shortcircuiting and will not evaluate y if x evaluates to false.


x && y;

This will return false, because y is false.

Output

"false"

OR

This operator will return true if one of the two expressions evaluate to true. This boolean operator will employ short-circuiting and y will not be evaluated if x evaluates to true


x || y;

This will return true, because x is true.

Output

"True"

NOT

This operator will return false if the expression on the right evaluates to true, and return true if the expression on the right evaluates to false.


!x;

This will return false, because x is true.

Output

"False"


Conclusion

In this page (written and validated by ) you learned about Javascript Logic Operators . What's Next? If you are interested in completing Javascript tutorial, your next topic will be learning about: Javascript Relational operators.



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