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update loadCSS with latest version
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scottjehl committed Oct 24, 2014
1 parent d483b49 commit d4dc5af
Showing 1 changed file with 27 additions and 5 deletions.
32 changes: 27 additions & 5 deletions enhance.js
Original file line number Diff line number Diff line change
Expand Up @@ -36,18 +36,40 @@

// loadCSS: load a CSS file asynchronously. Included from https://github.com/filamentgroup/loadCSS/
function loadCSS( href, before, media ){
// Arguments explained:
// `href` is the URL for your CSS file.
// `before` optionally defines the element we'll use as a reference for injecting our <link>
// By default, `before` uses the first <script> element in the page.
// However, since the order in which stylesheets are referenced matters, you might need a more specific location in your document.
// If so, pass a different reference element to the `before` argument and it'll insert before that instead
// note: `insertBefore` is used instead of `appendChild`, for safety re: http://www.paulirish.com/2011/surefire-dom-element-insertion/
var ss = window.document.createElement( "link" );
var ref = before || window.document.getElementsByTagName( "script" )[ 0 ];
var sheets = window.document.styleSheets;
ss.rel = "stylesheet";
ss.href = href;
// temporarily, set media to something non-matching to ensure it'll fetch without blocking render
ss.media = "only x";
// inject link
ref.parentNode.insertBefore( ss, ref );
// set media back to `all` so that the styleshet applies once it loads
setTimeout( function(){
ss.media = media || "all";
} );
// This function sets the link's media back to `all` so that the stylesheet applies once it loads
// It is designed to poll until document.styleSheets includes the new sheet.
function toggleMedia(){
var defined;
for( var i = 0; i < sheets.length; i++ ){
if( sheets[ i ].href && sheets[ i ].href.indexOf( href ) > -1 ){
defined = true;
}
}
if( defined ){
ss.media = media || "all";
}
else {
setTimeout( toggleMedia );
}
}

toggleMedia();
return ss;
}

Expand Down Expand Up @@ -152,4 +174,4 @@
loadCSS( fonts.content );
}

}( this ));
}( this ));

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