Adds a value to the Set, ignoring duplicates.

• Category: JS Set Reference — part of the JavaScript Tutorial on GoCareerGo
• Read the short summary above, then check the linked docs for full syntax/behaviour
• Interview tip: be ready to explain "Set.prototype.add()" in one sentence, then back it up with a tiny example

// Set.prototype.add() — minimal example
console.log("Set.prototype.add()");