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JavaScript Set 集合方法
tryjs_set_entries
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<!DOCTYPE html> <html> <body> <h1>JavaScript Sets</h1> <h2>The entries() Method</h2> <p>The entries() method returns an Iterator with [value,value] pairs from a Set:</p> <p id="demo"></p> <script> // Create a Set const letters = new Set(["a","b","c"]); // Get all Entries const iterator = letters.entries(); // List all Entries let text = ""; for (const entry of iterator) { text += entry + "<br>"; } document.getElementById("demo").innerHTML = text; </script> </body> </html>