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<html><body><h1>JavaScript Sets</h1><h2>The has() Method</h2><p>The has() method returns true if a set contains a spesific value:</p><p id="demo"></p><script>// Create a new Setconst letters = new Set(["a","b","c"]);// Does the Set contain "d"?answer = letters.has("d");document.getElementById("demo").innerHTML = "The answer is " + answer;</script></body></html>