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asynchronously loading the webfont + caching it #139

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asynchronously loading the webfont + caching it #139

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1 change: 1 addition & 0 deletions layouts/about.hbs
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Original file line number Diff line number Diff line change
Expand Up @@ -47,3 +47,4 @@
{{> footer }}
</body>
</html>
<link rel="stylesheet" href="/static/css/prism-tomorrow.css" media="all">
20 changes: 20 additions & 0 deletions layouts/partials/footer.hbs
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Original file line number Diff line number Diff line change
Expand Up @@ -24,6 +24,26 @@

</footer>

<script type="text/javascript">
(function(d) {
try {
var xhr = new XMLHttpRequest();
xhr.addEventListener('load', function() {
if(this.responseText) {
addStyle(this.responseText);
window.localStorage.fonts_css_cache = this.responseText;
}
});
xhr.open('get', '/static/fonts/webfont.css');
xhr.send();
} catch(e) {
var c = d.createElement('link'), sc = d.getElementsByTagName("script")[0];
c.href = '//fonts.googleapis.com/css?family=Source+Sans+Pro:300,300italic,400,400italic,600,600italic,700,700italic';
c.rel = 'stylesheet';
sc.parentNode.insertBefore(c,sc);
}
})(document);
</script>
<link rel="stylesheet" href="/static/css/prism-tomorrow.css" media="all">
<script src="https://ajax.googleapis.com/ajax/libs/webfont/1/webfont.js" async defer></script>
<script type="text/javascript">
Expand Down
24 changes: 20 additions & 4 deletions layouts/partials/html-head.hbs
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Original file line number Diff line number Diff line change
Expand Up @@ -2,10 +2,6 @@
<meta charset="utf-8">
<title>{{#if title}}{{ title }} | {{/if}}{{ site.title }}</title>

<link rel="dns-prefetch" href="http://fonts.googleapis.com">
<link rel="dns-prefetch" href="http://fonts.gstatic.com">
<link rel="dns-prefetch" href="http://www.google-analytics.com">

<meta name="author" content="{{ site.author }}">
<meta name="robots" content="{{#if robots}}{{ robots }}{{else}}index, follow{{/if}}">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
Expand All @@ -29,4 +25,24 @@
ga('create', 'UA-67020396-1', 'auto');
ga('send', 'pageview');
</script>
<script type="text/javascript">
var addStyle = (function(d) {
return function(style) {
if(!d.querySelector('#fontcache')) {
var c = d.createElement('style'), sc = d.getElementsByTagName("script")[0];
c.innerHTML = style;
c.id = 'fontcache';
sc.parentNode.insertBefore(c,sc);
}
}
})(document);
(function(d,w,s) {
if('querySelector' in d && 'localStorage' in w && s.getItem('fonts_css_cache') !== null) {
addStyle(s.fonts_css_cache);
}
})(document, window, window.localStorage);
</script>
<noscript>
<link rel="stylesheet" href="//fonts.googleapis.com/css?family=Source+Sans+Pro:300,300italic,400,400italic,600,600italic,700,700italic">
</noscript>
</head>