//if (!true)
Value is truthy
//if (!false)
Value is falsy
//if (!null)
Value is falsy
//if (!undefined)
Value is falsy
//if (!"")
Value is falsy
//if (!"str")
Value is truthy
//if (!"true")
Value is truthy
//if (!"false")
Value is truthy
//if (!0.0)
Value is falsy
//if (!NaN)
Value is falsy
//if (!-0.0)
Value is falsy
//if (!Infinity)
Value is truthy
//if (!1.0)
Value is truthy
//if (!-1.0)
Value is truthy
//if (!new Object())
Value is truthy