主页
JS 参考手册
JavaScript 数组 Spread (...)
tryjsref_oper_spread_copy_array
运行 ❯
×
更改方向
保存代码
更改主题
<!DOCTYPE html> <html> <body> <h1>JavaScript Operators</h1> <h2>The ... Operator</h2> <p>The spread operator (...) can be used to copy arrays:</p> <p id="demo"></p> <script> const arr1 = [1, 2, 3]; const arr2 = [...arr1]; document.getElementById("demo").innerHTML = arr2; </script> </body> </html>