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JS 参考手册
Input Button name 属性
tryjsref_inputbutton_name2
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<!DOCTYPE html> <html> <body> <input type="button" id="myBtn" name="myname" value="My Button"> <p>Click the buttons below to display and/or change the value of the name attribute of the input button above.</p> <button onclick="display()">Display name</button> <button onclick="change()">Change name</button> <script> function display() { var x = document.getElementById("myBtn").name; alert("The name of the input button is: " + x); } function change() { var x = document.getElementById("myBtn").name = "newButtonName"; alert ("The name was changed to: " + x); } </script> </body> </html>