Decision Making in Javascript Assignment Help

{ //block1- statements } else if(constraint2) { // block2- statements } else if (constraint3) { // block3- statements } . . else { //block-statements } `}

Example:

7.5 Switch-case statement

It switches the flow of program execution to n-number of cases based on the value which exists in switch statement.

{`
switch( expression )
{
case value1:
     Block-1 statements;
     Break;
case value2:
     Block-2 statements;
     Break;
case valuen:
     Block-n statements;
     Break;
default:
     Block-1 statements;
     Break;
     }
`}

The following rules apply to a switch statement −

The value of the expression may be integer or a character.
Each case is identified using value1, 2, n. No two case values are same.
Case labels end with a colon ( : ). Each of these case have block of executable statements.
Whenever the switch is executed, it returns the value from the expression and the value is compared with all the cases which reside within the switch-case block.
The case block starts execution if the expression value is matched with case value.
The break statement terminates the program execution and switch over the control out of the switch block.
The optional blocks of statements are written in the section default case. When the expression value is not matched with any case value, the default block will be executed.

Example: