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JS 参考手册
Input URL autofocus 属性
tryjsref_url_autofocus
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<!DOCTYPE html> <html> <body> Homepage: <input type="url" id="myURL" autofocus> <p>Click the button to find out if the URL field automatically gets focus when the page loads.</p> <button onclick="myFunction()">Try it</button> <p id="demo"></p> <script> function myFunction() { let x = document.getElementById("myURL").autofocus; document.getElementById("demo").innerHTML = x; } </script> </body> </html>