The following shows that "0" is false in Javascript:  >>> "0" == false true  >>> false == "0" true   So why does the following print "ha"?  >>> if ("0") console.log("ha") ha...
in javascript,  var a = ''; var b = (a) ? false : true;   // fixed!   var b will be set to false.  is this a defined behavior that can be relied upon?...
I have a variable that stores false or true, but I need 0 or 1 instead, respectively. How can I do this?...
In Python, and maybe in Javascript, the boolean or and and operators return one of the operands, instead of true or false.   In Python, one of the operands is returned: '' || 'hello' == 'hello' In comparison, in PHP: ''...
Many beginner programmers write things like if (myBoolean == true) as opposed to if (myBoolean) as they haven't yet grasped that conditionals don't need to contain a comparison, merely a boolean. When I noted this on twitter it was suggested...
I have a PHP program that uses HTML forms and uses JavaScript for validation.  There's a hidden field in the HTML form containing a boolean value that gets set by PHP, validated on submission by JavaScript, and passed to another PHP page.  When I...
According to the ECMAScript specification, both the unary logical NOT operator (!) and the Boolean() function use the internal function ToBoolean(), and the NOT operator also does a few checks to reverse the result.  So why is a double logical NOT op...
I found out the hard way that bitwise operators on bools don't return bools in JavaScript. I thought it must be a bug, but I looked it up in the ECMAScript spec, and sure enough, it says that the bitwise operators return numbers, not bools. It do...
e.pageX = e.clientX + (html && html.scrollLeft || body && body.scrollLeft || 0) - (html.clientLeft || 0)   how would this expression evaluate?...

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