Javascript – Set content of iframe

htmliframejavascriptjquery

I have the following structure.

<div>
<p>Hello World !!</p>
</div>
<iframe id="myiframe" src='myiframeContent.html'></iframe>

and I have the following JavaScript variable with content:

var s ="<html><head></head><body><div>Test_Div</div></body></html>";

How can I change the content of iframe with id myiframe with variable s?

I tried:

$("#myiframe").html(s);

Which giving me a very unusual return, it changes all the content of Current page to VAR S
Ex : styles,background etc..

How can I set the content of an iframe with a variable that contains HTML?

The content of variable s follows:

 <html>
  <head>
    <title>{page_name}</title>
    <meta name="keywords" content="{page_meta_tags}" />
    <script src="/1.js"></script>
    <script src="/2.js"></script>
 <style>
   h2{
 
 color:red;} 

 h1{
 color:red;}

 body{
     
 background-color:#f0eded;
 color:74f503;
 font-family:Verdana, Geneva, sans-serif;
 background:url({getUrl});}
  </style> 
  </head>
   
  <body>
    yahoo
    <div style="float:right">{pagecomment}</div>
    <div id="blogstart" style="">
      <h1>My Blog</h1>
      {nextPrevPagination}
      {blog} 
      {nextPrevPagination}
    </div>
    <p>My Page Name : {page_name}</p><br/>
    <p>Name of this template</p><br/>
    <p>Date started this page : {page_date}</p><br/>
    <label>Address</label>
    <textarea>{page_address}</textarea>
    
    <span>Country : {page_country} State :{page_state}</span>
    <p>page City : {page_city} Page Pincode {page_pincode}</p>
    <a href="mailto:{page_email}">Email me</a>
    {page_bio_title} and {page_bio_desc}
    <img src="{page_profile}" />
    {page_avatar}
    <p>Contact me : {page_mobile} , {page_landline} </p>
    <a href="http://www.facebook.com/{page_facebook_user}">I am on Facebook</a>
    <a href="http://www.twitter.com/{page_twitter_user}"></a>
  </body>
  
</html>

After applying this variable to the iframe I got like this [inspected through firebug]
Note that it doesn't have BODY ,Head tag, but the above one [var s] has a BODY tag.

<html>  
  
    <title>{page_name}</title>
    <meta content="{page_meta_tags}" name="keywords">
    
    
 <style>
   h2{
 
 color:red;} 

 h1{
 color:red;}

 body{
     
 background-color:#f0eded;
 color:74f503;
 font-family:Verdana, Geneva, sans-serif;
 background:url({url});}
  </style> 
  
    yahoo
    <div style="float: right;">{pagecomment}</div>
    <div style="" id="blogstart">
      <h1>My Blog</h1>
      {nextPrevPagination}
      {blog} 
      {nextPrevPagination}
    </div>
    <p>My Page Name : {page_name}</p><br>
    <p>Name of this template</p><br>
    <p>Date started this page : {page_date}</p><br>
    <label>Address</label>
    <textarea>{page_address}</textarea>
    
    <span>Country : {page_country} State :{page_state}</span>
    <p>page City : {page_city} Page Pincode {page_pincode}</p>
    <a href="mailto:{page_email}">Email me</a>
    {page_bio_title} and {page_bio_desc}
    <img src="{page_profile}">
    {page_avatar}
    <p>Contact me : {page_mobile} , {page_landline} </p>
    <a href="http://www.facebook.com/{page_facebook_user}">I am on Facebook</a>
    <a href="http://www.twitter.com/{page_twitter_user}"></a>
  </html>

Best Answer

I managed to do it with

var html_string= "content";
document.getElementById('output_iframe1').src = "data:text/html;charset=utf-8," + escape(html_string);

Related Solutions

Html – Remove border from IFrame

Add the frameBorder attribute (note the capital ‘B’).

So it would look like:

<iframe src="myURL" width="300" height="300" frameBorder="0">Browser not compatible.</iframe>

Javascript – Resizing an iframe based on content

We had this type of problem, but slightly in reverse to your situation - we were providing the iframed content to sites on other domains, so the same origin policy was also an issue. After many hours spent trawling google, we eventually found a (somewhat..) workable solution, which you may be able to adapt to your needs.

There is a way around the same origin policy, but it requires changes on both the iframed content and the framing page, so if you haven't the ability to request changes on both sides, this method won't be very useful to you, i'm afraid.

There's a browser quirk which allows us to skirt the same origin policy - javascript can communicate either with pages on its own domain, or with pages it has iframed, but never pages in which it is framed, e.g. if you have:

 www.foo.com/home.html, which iframes
 |-> www.bar.net/framed.html, which iframes
     |-> www.foo.com/helper.html

then home.html can communicate with framed.html (iframed) and helper.html (same domain).

 Communication options for each page:
 +-------------------------+-----------+-------------+-------------+
 |                         | home.html | framed.html | helper.html |
 +-------------------------+-----------+-------------+-------------+
 | www.foo.com/home.html   |    N/A    |     YES     |     YES     |
 | www.bar.net/framed.html |    NO     |     N/A     |     YES     |
 | www.foo.com/helper.html |    YES    |     YES     |     N/A     |
 +-------------------------+-----------+-------------+-------------+

framed.html can send messages to helper.html (iframed) but not home.html (child can't communicate cross-domain with parent).

The key here is that helper.html can receive messages from framed.html, and can also communicate with home.html.

So essentially, when framed.html loads, it works out its own height, tells helper.html, which passes the message on to home.html, which can then resize the iframe in which framed.html sits.

The simplest way we found to pass messages from framed.html to helper.html was through a URL argument. To do this, framed.html has an iframe with src='' specified. When its onload fires, it evaluates its own height, and sets the src of the iframe at this point to helper.html?height=N

There's an explanation here of how facebook handle it, which may be slightly clearer than mine above!

Code

In www.foo.com/home.html, the following javascript code is required (this can be loaded from a .js file on any domain, incidentally..):

<script>
  // Resize iframe to full height
  function resizeIframe(height)
  {
    // "+60" is a general rule of thumb to allow for differences in
    // IE & and FF height reporting, can be adjusted as required..
    document.getElementById('frame_name_here').height = parseInt(height)+60;
  }
</script>
<iframe id='frame_name_here' src='http://www.bar.net/framed.html'></iframe>

In www.bar.net/framed.html:

<body onload="iframeResizePipe()">
<iframe id="helpframe" src='' height='0' width='0' frameborder='0'></iframe>

<script type="text/javascript">
  function iframeResizePipe()
  {
     // What's the page height?
     var height = document.body.scrollHeight;

     // Going to 'pipe' the data to the parent through the helpframe..
     var pipe = document.getElementById('helpframe');

     // Cachebuster a precaution here to stop browser caching interfering
     pipe.src = 'http://www.foo.com/helper.html?height='+height+'&cacheb='+Math.random();

  }
</script>

Contents of www.foo.com/helper.html:

<html> 
<!-- 
This page is on the same domain as the parent, so can
communicate with it to order the iframe window resizing
to fit the content 
--> 
  <body onload="parentIframeResize()"> 
    <script> 
      // Tell the parent iframe what height the iframe needs to be
      function parentIframeResize()
      {
         var height = getParam('height');
         // This works as our parent's parent is on our domain..
         parent.parent.resizeIframe(height);
      }

      // Helper function, parse param from request string
      function getParam( name )
      {
        name = name.replace(/[\[]/,"\\\[").replace(/[\]]/,"\\\]");
        var regexS = "[\\?&]"+name+"=([^&#]*)";
        var regex = new RegExp( regexS );
        var results = regex.exec( window.location.href );
        if( results == null )
          return "";
        else
          return results[1];
      }
    </script> 
  </body> 
</html>

Best Answer

Related Solutions

Html – Remove border from IFrame

Javascript – Resizing an iframe based on content

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