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JavaScript 字符串 at() 方法
tryjsref_string_at1
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<!DOCTYPE html> <html> <body> <h1>JavaScript Strings</h1> <h2>The at() Method</h2> <p>The at() method returns an indexed character from a string.</p> <p>An empty index like at() defaults to at(0).</p> <p id="demo"></p> <script> let text = "freew3c"; let character = text.at(); document.getElementById("demo").innerHTML = character; </script> </body> </html>