Write Elements into a Child Iframe Using JavaScript or Jquery

Write elements into a child iframe using Javascript or jQuery

You can do both, you just have to target differently:

var ifrm = document.getElementById('myIframe');
ifrm = ifrm.contentWindow || ifrm.contentDocument.document || ifrm.contentDocument;
ifrm.document.open();
ifrm.document.write('Hello World!');
ifrm.document.close();

Accessing element in child IFrame from parent page using jquery

Try using load instead of ready.

$('#iframe1').load(function(){
    console.log($('#iframe1').contents().find("#testDiv").html());
});

Access Child iframe elements from parent page with jquery?

See : Access child iFrame DOM from parent page

But it will only work if all the scripts and iframe are on the same domain.

Cannot write content inside iframe

An alternative approach is:

var ifrm = document.getElementById('gozujinsama');
var doc = ifrm.contentWindow || ifrm.contentDocument.document || ifrm.contentDocument;

doc.open();
if(doc.write){
    doc.write("<DOCTYPE html><html><body><a href=\"http://google.com\"><img src=\"https://upload.wikimedia.org/wikipedia/commons/thumb/2/2f/Google_2015_logo.svg/272px-Google_2015_logo.svg.png\"/></a></body></html>");
} else {
   doc.document.write("<DOCTYPE html><html><body><a href=\"http://google.com\"><img src=\"https://upload.wikimedia.org/wikipedia/commons/thumb/2/2f/Google_2015_logo.svg/272px-Google_2015_logo.svg.png\"/></a></body></html>");
}

doc.close();

Get child element within a div using this - Jquery

Looks like you just reversed the function arguments. The context goes after the selector, not before:

$('iframe', this);

Example:

$('.iframeHolder').each(function() {  var iframe = $('iframe', this);  iframe.attr('src', 'https://google.com');  });

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script><div class="row iframeHolder">  <div class="col-large col-centered position-relative">    <div class="card mb-4 box-shadow">
      <iframe class="iframes">        <p>Your browser does not support iframes.</p>      </iframe>    </div>  </div></div>

How can I access the contents of an iframe with JavaScript/jQuery?

I think what you are doing is subject to the same origin policy. This should be the reason why you are getting permission denied type errors.

jquery select iframe children

$("iframe").contents().find("textarea").keydown(...)

How to access child iframe elements from a parent javascript page?

Since your iframe src= a complete url, and not a relative path (i.e: /app/appsignup.jsp) I am going to assume this Iframe exists at another IP or domain than the original page. If this assumption is correct, then you are not going to be able to modify the Iframe's DOM due to cross site scripting security rules in most browsers.

If the parent site, and child iframe exist on the same top level domain, then you can use document.getElementById("iframe_id")

Edit to answer second question:

You can add an onLoad event to the iframe, and so long as the iframe only has 1 form, and the page only changes when submitted, and this is where you want to be redirected.

Here is an example, but know this will redirect the first time and not work!
What you will want to do is put a function in there, and then in the .js for that function check for the second onLoad...

<iframe name="signUp" id="signup" src="10.80.32.9:8080/app/appsignup.jsp"; width="650" height="500" onLoad="window.location('/index.html');">

Write Elements into a Child Iframe Using JavaScript or Jquery