JavaScript Guy

Setting default optional values in JavaScript is usually done via the || character var Car = functi… Read more How To Set Default Boolean Values In Javascript?

I recently came across code where a switch statement seemed reversed with the answer (boolean) in t… Read more Is Switch(true) {... Valid Javascript?

Why does {} == false evaluate to false while [] == false evaluates to true in javascript? Solutio… Read more Why Does {} == False Evaluate To False While [] == False Evaluates To True?

function each(collection, callback) { var arr = []; for(var i = 0; i Solution 1: If a function… Read more Higher Order Functions Returning Anything But A Non-boolean Is Questionable. Why?

if([] == false) alert('empty array is false'); alert(+[]) // alert 0 if([]) alert('empt… Read more Why If([]) Is Validated While [] == False In Javascript?

In Javascript, I have seen code using string type to represent 'true' and 'false'. … Read more What Are The Pros And Cons Of Using Boolean Type Versus String Type "true"/"false"?

e.pageX = e.clientX + (html && html.scrollLeft || body && body.scrollLeft || 0) - (… Read more What Is The Order Of Precedence For Boolean Operators In Js?

In Python, and maybe in Javascript, the boolean or and and operators return one of the operands, in… Read more Boolean Operators Which Return One Of The Operands