Prevent loading the content of a hidden iframe

问题

I have many hidden <div> tags, with (display: none), that I call upon when I want to load a jQuery modal. Each of these <div> tags contain an <iframe> which calls a different page.

In order to not make my page load painfully slowly, I am wondering if there is a way to prevent the <iframe> from loading the page, until I call the <div> in the modal?

回答1:

You can load the iframes after html being rendered by giving empty src in html of iframe and later assigning src by jquery / javascript.

Html

<iframe id="iframe1" ></iframe>

Javascript, iframe could be loaded on some action like button click

document.getElementById('iframe1').src="/default.aspx";

As kern3l said, we can add data attribute in iframe for holding src instead of hard coding.

Html

<iframe id="iframe1" data-frameSrc="/default.aspx"></iframe>

Javascript

ifrmame1 = $('#iframe1')
ifrmam1.src = ifrmam1.data("frameSrc");

You can also make a new frame in jquery and assign src, this will load the page with blank frame.

$('<iframe>', {
   src: '/default.aspx',
   id:  'myFrame',
   frameborder: 0,
   scrolling: 'no'
   }).appendTo('#parentDivId');

var iframe = document.createElement('iframe');
iframe.frameBorder=0;
iframe.width="300px";
iframe.height="250px";
iframe.id="myFrame";
iframe.setAttribute("src", '/default.aspx');
document.getElementById("parentDivId").appendChild(iframe);

回答2:

Just use one iframe:

<iframe id='page' src=''></iframe>

then assign src on each click of the button/link:

suppose this is the html:

<ul>
  <li><a href='myfolder/myPage1.html'>Page 1</a></li>
  <li><a href='myfolder/myPage2.html'>Page 2</a></li>
</ul>

then jquery:

$('ul li a').click(function(e){
   e.preventDefault();
   $('#page').attr('src', $(this).attr('href'));
});

来源：https://stackoverflow.com/questions/14868252/prevent-loading-the-content-of-a-hidden-iframe

标签

jquery

iframe

load

modal-dialog

hidden