JS dynamically adds iframe code_javascript skills

Generally, it can be supported by IE9 and above browsers, chrome and other browsers

var iframe = document.createElement('iframe'); 
iframe.src="http://www.jb51.net";  
document.body.appendChild(iframe);

But considering browser compatibility issues, you can use the following code

try{  
   var iframe = document.createElement('<iframe name="ifr"></iframe>');  
  }catch(e){ 
    var iframe = document.createElement('iframe');  
    iframe.name = 'ifr';  
 }

or

if(ie && version < 9) {
  var iframe = document.createElement('<iframe src="http://www.jb51.net"></iframe>');
} else {
  var iframe = document.createElement('iframe');
  iframe.setAttribute('src','http://www.jb51.net');
}