How can I display a webpage differently using CSS if it is within an iframe? I would like to use jQuery or JavaScript to switch to a different stylesheet specifically when the site is being displayed within an iframe. Any suggestions on how to achieve this?
To switch up the styling, you have the ability to inject a new stylesheet if the current window is not at the top of the stack.
if (window.top!=window.self)
{
// Operating within a Frame or IFrame
}
else
{
// Not positioned inside a frame
}
Instead of injecting a new stylesheet, my recommendation would be to assign a CSS class to the body element.
Example using vanilla JavaScript:
document.addEventListener('DOMContentLoaded', function() {
if (window.self != window.top) {
document.body.classList.add("in-iframe");
}
});
This way, you can easily apply different styles such as:
.in-iframe p {
background: purple;
}
Check out this quick and user-friendly solution using vanilla JavaScript. With just a single line of code in JS, you can easily customize the appearance through CSS/SASS/LESS.
To implement this, insert the following code snippet within the head section before loading any CSS or JS:
// Dynamically assigns a class to the HTML element using vanilla JavaScript
document.documentElement.className += (window.self == window.top ? " top" : " framed");
Now, in your CSS/SASS/LESS files, you can modify the layout, visibility, and styles based on the applied class.
/* Conceal website navigation when running within an iframe */
html.framed .site-nav,
html.framed .site-footer {
display: none;
}
Important note: It's advisable to utilize the X-Frame-Options for security purposes and prevent unauthorized usage of your content.
if( self !== top ) {
headTag = document.getElementsByTagName("head")[0].innerHTML;
var frameCSS = headTag + '<style type="text/css">**insert your CSS code here**</style>';
document.getElementsByTagName('head')[0].innerHTML = frameCSS;
}
In situations where the page is being displayed as the only page, the variables top, parent, self, and window will be equal. However, if the page is within a frameset, then self and top will not be equal. In cases where the page contains the frameset and itself is not within a frameset, self and top will be equal.
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