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JavaScript 2023 新特性
tryjs_array_with
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<!DOCTYPE html> <html> <body> <h1>JavaScript Arrays</h1> <h2>The with() Method</h2> <p id="demo"></p> <script> const months = ["Januar", "Februar", "Mar", "April"]; const myMonths = months.with(2, "March"); document.getElementById("demo").innerHTML = myMonths; </script> </body> </html>