when to use switch statement javascript code example
Example 1: js switch case
switch(expression) {
case x:
break;
case y:
break;
default:
}
Example 2: js convert if/else statement to switch case
var gradeOut = 70;
var totalGrade = 80;
if (gradeOut >= 90)
gradeOut+= "My letter grade is: A";
else if (totalGrade < 90 && totalGrade >= 80)
gradeOut+= "My letter grade is: B";
else if (totalGrade < 80 && totalGrade >= 70)
gradeOut+= "My letter grade is: C";
else if (totalGrade < 70 && totalGrade >= 60)
gradeOut+= "My letter grade is: D";
else if (totalGrade < 60)
gradeOut+= "My letter grade is: F";
switch(true) {
case gradeOut<60:
gradeOut= "My letter grade is: F";
break;
case gradeOut<70:
gradeOut= "My letter grade is: D";
break;
case gradeOut<80:
gradeOut="My letter grade is: C";
break;
}