Question

How to make an iframe, where I can set the source code, not just the src? Is it possible to create one without the src?

Answer 1

demo

//get the iframe
var iFrame =  document.getElementById('iframe_id');

//this is your reference variable for the iframe body tag
var iFrameBody;

//get the body
if (iFrame.contentDocument ){// FF
    iFrameBody = iFrame.contentDocument.getElementsByTagName('body')[0];
}
else if ( iFrame.contentWindow ){ // IE
    iFrameBody = iFrame.contentWindow.document.getElementsByTagName('body')[0];
}
else {
    iFrameBody = iFrame.contentDocument.body
}

iFrameBody.innerHTML = "i should be in the iframe";​

references:

• https://stackoverflow.com/a/927023/575527
• https://stackoverflow.com/a/4149924/575527

do note that this is bound to the “same-origin policy”