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Input Date stepUp() 方法
tryjsref_input_date_stepup2
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<!DOCTYPE html> <html> <body> Date: <input type="date" id="myDate" value="2014-05-05"> <p>Click the button to increment the value of the date field by 1 day (each time you click).</p> <p><strong>Note:</strong> This is the same as clicking the up arrow on the right side of the date field for the "day" section.</p> <button onclick="myFunction()">Try it</button> <p><strong>Note:</strong> The stepUp() method is not supported by Internet Explorer 11 and earlier versions.</p> <script> function myFunction() { document.getElementById("myDate").stepUp(); } </script> </body> </html>