Relational & Logical operators in Javascript.

Relational & Logical Operators to use in program flow.

• Any program code is meant to do some actions based on conditions.
• These conditions is normally based on an evaluation of values using relational operators which in Javascript are:

  Operator	Example	Comments
  == (equality)	'50'==50 // true 30 ==50 // false	Returns true when both operands are equal. The operands are converted to the same type before being compared.
  != (non-equality)	'50'!=50 // false 30 !=50 // true	Returns true when both operands are not equal. The operands are converted to the same type before being compared.
  === (equality)	'50'===50 // false 50 ===50 // true	Returns true if both operands are equal and of the same type.
  !== (non-equality)	'50'!==50 // true 50 !==50 // false	Returns true if both operands are not equal and of the same type.
  > (greater than)	'50'>40 // true 50 >50 // false	Returns true if the left operand is greater than the right one.
  >= (greater than or equal)	'50'>=50 // true 30 >=50 // false	Returns true if the left operand is greater than or equal to the right one.
  < (less than)	'50'<40 // false 50 <50 // false	Returns true if the left operand is greater than the right one.
  <= (less than or equal)	'50'<=50 // false 50 <=50 // true	Returns true if the left operand is greater than or equal to the right one.

• In such evaluation we can use some Logical Operators as well:

  Name	Operator	Sample	Description
  AND	&&	expession1 && expression2	Both expressions must return true if the outcome shall be true
  OR	||	expession1 || expression2	One of the expressions must return true if the outcome shall be true
  NOT	!	!expression	If the expression return false the outcome will be true