"Learning Notes" JavaScript coding specifications-Comparison operators & equality

Use = = = and!== instead of = = and! =

Comparison operators perform calculations using the ToBoolean method to cast the data type and follow these rules:

The computed value of object is True

The computed value of undefined is false

Boolean evaluates to a Boolean value

Numbers if it is -0,+0 or Nan, the computed value is false and the inverse is true

string if NULL, the computed value is false and vice versa is true

if ([0]) {//true}

Using shortcuts

BADIF (Name!== ") {}//goodif (name) {}//badif (collection.length >0) {}//goodif (collection.length) {}//god bless!

"Learning Notes" JavaScript coding specifications-Comparison operators & equality