basics of switch case and if else
//switch case
let marks=91;
switch(true){
case (marks>90):
console.log("Super Grade");
break;
case (marks > 50):
console.log("Pass");
break;
case (marks < 50):
console.log("Fail");
break;
default:
console.log("Unknown Grade")
}
//If Else
let mark=91;
if (mark > 90) {
console.log("Super Grade");
} else if (marks > 50){
console.log("Pass");
}else if(marks < 50 ){
console.log("Fail");
}else{
console.log("Unknown Grade")
}