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JavaScript 类型化数组 at() 方法
tryjsref_typed_at_3
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<!DOCTYPE html> <html> <body> <h1>JavaScript Typed Arrays</h1> <h2>The copyWithin() Method</h2> <p>The at() method returns an indexed element from a typed array.</p> <p>Zero is the default index.</p> <p id="demo"></p> <script> // Create a Typed Array const myArr = Int32Array.of(10,20,30,40,50,60); let myNumber = myArr.at(); document.getElementById("demo").innerHTML = "The value of the element with the default index is: " + myNumber; </script> </body> </html>