W3School TIY Editor
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<!DOCTYPE html> <html> <body> <form action="/demo/action_page.php" target="_blank"> First name: <input type="text" name="fname" value="Bill"><br> Last name: <input type="text" name="lname" value="Gates"><br><br> <button id="myBtn" formmethod="get" type="submit">提交</button> </form> <p>单击下面的两个按钮可更改上面表单中提交按钮的 formmethod。</p> <button onclick="setGet()">GET</button> <button onclick="setPost()">POST</button> <p id="demo"></p> <script> function setGet() { document.getElementById("myBtn").formMethod = "GET"; document.getElementById("demo").innerHTML = "该 formaction 现在是 'GET'。"; } function setPost() { document.getElementById("myBtn").formMethod = "POST"; document.getElementById("demo").innerHTML = "该 formaction 现在是 'POST'。"; } </script> </body> </html>