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Submit iframe form outside iframe using button

<p>I have a contact.html file that contains an iframe: <code><iframe name="myframe" id="frame1" src="contact_inputs.php"></iframe> ;</code>, which only contains the three input boxes in contact_inputs.php. </p> <p>I want to submit a form in an iframe file to php_form.php via a button outside the iframe. </p> <blockquote> <p>Contact.html</p> </blockquote> <pre class="brush:php;toolbar:false;"><iframe name="myframe" id="frame1" src="contact_inputs.php"></iframe> <form action="php_form.php" method="post"> <input type="submit" name="DoIt" value="submit"> </form></pre> <blockquote> <p>contact_inputs.php</p> </blockquote> <pre class="brush:php;toolbar:false;"><form> <input type="" name="cn"> <input type="" name="ex"> <input type="" name="cr"> </form></pre>
P粉316110779P粉316110779534 days ago609

reply all(1)I'll reply

  • P粉546179835

    P粉5461798352023-09-05 09:47:38

    Here you can try this logic: 

    function sub(ev) {
        ev.preventDefault();
        let frame1 = document.getElementById("frame1");

        let parser = new DOMParser();
        let doc = parser.parseFromString(frame1.innerHTML, "text/html");

        let iframeForm = doc.body.querySelector("form");

        console.log(iframeForm);

        //通过name属性访问表单输入字段的值
        console.log(iframeForm.cn.value);
      }
    <!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
  </head>
  <body>
    <iframe name="myframe" id="frame1" src="contact_inputs.php">
      <form id="iframe1Form">
        <input type="" name="cn" value ="HELLO"/>
        <input type="" name="ex" />
        <input type="" name="cr" />
      </form>
    </iframe>
    <form onsubmit="sub(event)">
      <input type="submit" name="DoIt" value="submit" />
    </form>

    
  </body>
</html>

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