Switch Case In Javascript. The javascript switch.case statement executes different blocks of code based on the value of a given expression. The objective of a switch statement is to give an expression to evaluate and several different statements to execute based on the value of the expression.

The switch statement evaluates an expression, compares its results with case values, and executes the statement associated with the matching case value. The switch statement evaluates an expression, matching the expression’s value to a case clause, and executes statements associated with that case.