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Input Color autofocus 属性
tryjsref_color_autofocus
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<!DOCTYPE html> <html> <body> A color picker: <input type="color" id="myColor" autofocus> <p>Click the "Try it" button to find out if the color picker automatically gets focus when the page loads.</p> <button onclick="myFunction()">Try it</button> <p><b>Note:</b> type="color" is not supported in Internet Explorer 11 and earlier versions or Safari 9.1 and earlier versions.</p> <p id="demo"></p> <script> function myFunction() { var x = document.getElementById("myColor").autofocus; document.getElementById("demo").innerHTML = x; } </script> </body> </html>