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Comparison Operators

A comparison operator compares its operands and returns a logical value based on whether the comparison is true. The operands can be numerical or string values. Strings are compared based on standard lexicographical ordering, using Unicode values. The following table describes the comparison operators.

Operators Description Examples returning true
Equal(==) Returns true if the operands are equal. If the two operands are not of the same type, JavaScript attempts to convert the operands to an appropriate type for the comparison. 3 == var1
"3" == var1
3 == '3'
Not equal(!=) Returns true if the operands are equal. If the two operands are not of the same type, JavaScript attempts to convert the operands to an appropriate type for the comparison. var1 != 4
var2 != "3"
Strict equal(===) Returns true if the operands are equal and of the same type. 3 === var1
Strict not equal(!==) Returns true if the operands are not equal and/or not of the same type. var1 !== "3"
3 !== '3'
Greater than(>) Returns true if the left operand is greater than the right operand. var2 > var1
Greater than or equal(>=) Returns true if the left operand is greater than or equal to the right operand. var2 >= var1
var1 >= 3
Less than(<) Returns true if the left operand is less than the right operand. var2 < var1
Less than or equal(<=) Returns true if the left operand is less than or equal to the right operand. var2 <= var1
var2 <= 5

 

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