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Using if-else chains
Build a grade calculator:
let score = 85
let grade
if (score >= 90) {
grade = "A"
} else if (score >= 80) {
grade = "B"
} else if (score >= 70) {
grade = "C"
} else if (score >= 60) {
grade = "D"
} else {
grade = "F"
}
console.log(`Score: ${score}, Grade: ${grade}`)
Try different scores. Notice how exactly one branch runs.