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Input Password select() 方法
tryjsref_password_select
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<!DOCTYPE html> <html> <body> <h2>Use select() to select the content of a Password Field</h2> Password: <input type="password" id="myPsw" value="thgrt456"> <p>Click the button to select the content of the password field.</p> <button type="button" onclick="myFunction()">Try it</button> <script> function myFunction() { document.getElementById("myPsw").select(); } </script> </body> </html>