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JS 参考手册
Input URL readOnly 属性
tryjsref_url_readonly2
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<!DOCTYPE html> <html> <body> Homepage: <input type="url" id="myURL" readonly> <p>Click the button to find out if the URL field is read-only.</p> <button onclick="myFunction()">Try it</button> <p id="demo"></p> <script> function myFunction() { var x = document.getElementById("myURL").readOnly; document.getElementById("demo").innerHTML = x; } </script> </body> </html>