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JavaScript 数组 Spread (...)
tryjsref_oper_spread
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<!DOCTYPE html> <html> <body> <h1>JavaScript Operators</h1> <h2>The ... Operator</h2> <p>The spread operator (...) can be used to join arrays:</p> <p id="demo"></p> <script> const arr1 = [1, 2, 3]; const arr2 = [4, 5, 6]; const arr3 = [...arr1, ...arr2]; document.getElementById("demo").innerHTML = arr3; </script> </body> </html>