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head.js
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/**
Head JS The only script in your <HEAD>
Copyright Tero Piirainen (tipiirai)
License MIT / http://bit.ly/mit-license
Version 0.8
http://headjs.com
*/
(function(doc) {
var html = doc.documentElement,
conf = {
screens: [320, 480, 640, 768, 1024, 1280, 1440, 1680, 1920],
section: "-section",
page: "-page",
head: "head"
},
klass = [];
if (window.head_conf) {
for (var key in head_conf) {
if (head_conf[key]) {
conf[key] = head_conf[key];
}
}
}
function pushClass(name) {
klass.push(name);
}
function removeClass(name) {
var re = new RegExp("\\b" + name + "\\b");
html.className = html.className.replace(re, '');
}
function each(arr, fn) {
for (var i = 0; i < arr.length; i++) {
fn.call(arr, arr[i], i);
}
}
// API
var api = window[conf.head] = function() {
api.ready.apply(null, arguments);
};
api.feature = function(key, enabled, queue) {
// internal: apply all classes
if (!key) {
html.className += ' ' + klass.join( ' ' );
klass = [];
return;
}
if (Object.prototype.toString.call(enabled) == '[object Function]') {
enabled = enabled.call();
}
pushClass((enabled ? '' : 'no-') + key);
api[key] = !!enabled;
// apply class to HTML element
if (!queue) {
removeClass('no-' + key);
removeClass(key);
api.feature();
}
return api;
};
// browser type & version
var ua = navigator.userAgent.toLowerCase();
ua = /(webkit)[ \/]([\w.]+)/.exec( ua ) ||
/(opera)(?:.*version)?[ \/]([\w.]+)/.exec( ua ) ||
/(msie) ([\w.]+)/.exec( ua ) ||
!/compatible/.test( ua ) && /(mozilla)(?:.*? rv:([\w.]+))?/.exec( ua ) || [];
if (ua[1] == 'msie') { ua[1] = 'ie'; }
pushClass(ua[1]);
api.browser = { version: ua[2] };
api.browser[ua[1]] = true;
// IE specific
if (api.browser.ie) {
// IE versions
for (var ver = 3; ver < 11; ver++) {
if (parseFloat(ua[2]) < ver) { pushClass("lt-ie" + ver); }
}
}
// HTML5 support
each("abbr|article|aside|audio|canvas|details|figcaption|figure|footer|header|hgroup|mark|meter|nav|output|progress|section|summary|time|video".split("|"), function(el) {
doc.createElement(el);
});
// CSS "router"
each(location.pathname.split("/"), function(el, i) {
if (this.length > 2 && this[i + 1] !== undefined) {
if (i) { pushClass(this.slice(1, i+1).join("-") + conf.section); }
} else {
// pageId
var id = el || "index", index = id.indexOf(".");
if (index > 0) { id = id.substring(0, index); }
html.id = id + conf.page;
// on root?
if (!i) { pushClass("root" + conf.section); }
}
});
// screen resolution: w-100, lt-480, lt-1024 ...
function screenSize() {
var w = window.outerWidth || html.clientWidth;
// remove earlier widths
html.className = html.className.replace(/ (w|lt)-\d+/g, "");
// add new ones
pushClass("w-" + Math.round(w / 100) * 100);
each(conf.screens, function(width) {
if (w <= width) { pushClass("lt-" + width); }
});
api.feature();
}
screenSize();
window.onresize = screenSize;
api.feature("js", true).feature();
})(document);
/**
Head JS The only script in your <HEAD>
Copyright Tero Piirainen (tipiirai)
License MIT / http://bit.ly/mit-license
Version 0.8
http://headjs.com
*/
(function() {
/*
To add a new test:
head.feature("video", function() {
var tag = document.createElement('video');
return !!tag.canPlayType;
});
Good place to grab more tests
https://github.com/Modernizr/Modernizr/blob/master/modernizr.js
*/
/* CSS modernizer */
var el = document.createElement("i"),
style = el.style,
prefs = ' -o- -moz- -ms- -webkit- -khtml- '.split(' '),
domPrefs = 'Webkit Moz O ms Khtml'.split(' '),
head_var = window.head_conf && head_conf.head || "head",
api = window[head_var];
// Paul Irish (http://paulirish.com): Million Thanks!
function testProps(props) {
for (var i in props) {
if (style[props[i]] !== undefined) {
return true;
}
}
}
function testAll(prop) {
var camel = prop.charAt(0).toUpperCase() + prop.substr(1),
props = (prop + ' ' + domPrefs.join(camel + ' ') + camel).split(' ');
return !!testProps(props);
}
var tests = {
gradient: function() {
var s1 = 'background-image:',
s2 = 'gradient(linear,left top,right bottom,from(#9f9),to(#fff));',
s3 = 'linear-gradient(left top,#eee,#fff);';
style.cssText = (s1 + prefs.join(s2 + s1) + prefs.join(s3 + s1)).slice(0,-s1.length);
return !!style.backgroundImage;
},
rgba: function() {
style.cssText = "background-color:rgba(0,0,0,0.5)";
return !!style.backgroundColor;
},
opacity: function() {
return el.style.opacity === "";
},
textshadow: function() {
return style.textShadow === '';
},
multiplebgs: function() {
style.cssText = "background:url(//:),url(//:),red url(//:)";
return new RegExp("(url\\s*\\(.*?){3}").test(style.background);
},
boxshadow: function() {
return testAll("boxShadow");
},
borderimage: function() {
return testAll("borderImage");
},
borderradius: function() {
return testAll("borderRadius");
},
reflections: function() {
return testAll("boxReflect");
},
transforms: function() {
return testAll("transform");
},
transitions: function() {
return testAll("transition");
}
};
// queue features
for (var key in tests) {
if (tests[key]) {
api.feature(key, tests[key].call(), true);
}
}
// enable features at once
api.feature();
})();
/**
Head JS The only script in your <HEAD>
Copyright Tero Piirainen (tipiirai)
License MIT / http://bit.ly/mit-license
Version 0.8
http://headjs.com
*/
(function(doc) {
var head = doc.documentElement,
ie = navigator.userAgent.toLowerCase().indexOf("msie") != -1,
ready = false, // is HEAD "ready"
queue = [], // if not -> defer execution
handlers = {}, // user functions waiting for events
scripts = {}, // loadable scripts in different states
isAsync = doc.createElement("script").async === true ||
"MozAppearance" in doc.documentElement.style ||
window.opera;
/*** public API ***/
var head_var = window.head_conf && head_conf.head || "head",
api = window[head_var] = (window[head_var] || function() { api.ready.apply(null, arguments); });
// states
var PRELOADED = 0,
PRELOADING = 1,
LOADING = 2,
LOADED = 3;
// Method 1: simply load and let browser take care of ordering
if (isAsync) {
api.js = function() {
var args = arguments,
fn = args[args.length -1],
els = [];
if (!isFunc(fn)) { fn = null; }
each(args, function(el, i) {
if (el != fn) {
el = getScript(el);
els.push(el);
load(el, fn && i == args.length -2 ? function() {
if (allLoaded(els)) { fn(); }
} : null);
}
});
return api;
};
// Method 2: preload with text/cache hack
} else {
api.js = function() {
var args = arguments,
rest = [].slice.call(args, 1),
next = rest[0];
if (!ready) {
queue.push(function() {
api.js.apply(null, args);
});
return api;
}
// multiple arguments
if (next) {
// load
each(rest, function(el) {
if (!isFunc(el)) {
preload(getScript(el));
}
});
// execute
load(getScript(args[0]), isFunc(next) ? next : function() {
api.js.apply(null, rest);
});
// single script
} else {
load(getScript(args[0]));
}
return api;
};
}
api.ready = function(key, fn) {
// shift arguments
if (isFunc(key)) {
fn = key;
key = "ALL";
}
var script = scripts[key];
if (script && script.state == LOADED || key == 'ALL' && allLoaded()) {
fn();
return api;
}
var arr = handlers[key];
if (!arr) { arr = handlers[key] = [fn]; }
else { arr.push(fn); }
return api;
};
/*** private functions ***/
function toLabel(url) {
var els = url.split("/"),
name = els[els.length -1],
i = name.indexOf("?");
return i != -1 ? name.substring(0, i) : name;
}
function getScript(url) {
var script;
if (typeof url == 'object') {
for (var key in url) {
if (url[key]) {
script = { name: key, url: url[key] };
}
}
} else {
script = { name: toLabel(url), url: url };
}
var existing = scripts[script.name];
if (existing) { return existing; }
// same URL?
for (var name in scripts) {
if (scripts[name].url == script.url) { return scripts[name]; }
}
scripts[script.name] = script;
return script;
}
function each(arr, fn) {
if (!arr) { return; }
// arguments special type
if (typeof arr == 'object') { arr = [].slice.call(arr); }
// do the job
for (var i = 0; i < arr.length; i++) {
fn.call(arr, arr[i], i);
}
}
function isFunc(el) {
return Object.prototype.toString.call(el) == '[object Function]';
}
function allLoaded(els) {
els = els || scripts;
for (var name in els) {
if (els[name].state != LOADED) { return false; }
}
return true;
}
function onPreload(script) {
script.state = PRELOADED;
each(script.onpreload, function(el) {
el.call();
});
}
function preload(script, callback) {
if (!script.state) {
script.state = PRELOADING;
script.onpreload = [];
scriptTag({ src: script.url, type: 'cache'}, function() {
onPreload(script);
});
}
}
function load(script, callback) {
if (script.state == LOADED && callback) {
return callback();
}
if (script.state == LOADING) {
return api.ready(script.name, callback);
}
if (script.state == PRELOADING) {
return script.onpreload.push(function() {
load(script, callback);
});
}
script.state = LOADING;
scriptTag(script.url, function() {
script.state = LOADED;
if (callback) { callback(); }
// handlers for this script
each(handlers[script.name], function(fn) {
fn();
});
if (allLoaded()) {
each(handlers.ALL, function(fn) {
if (!fn.done) { fn(); }
fn.done = true;
});
}
});
}
function scriptTag(src, callback) {
var s = doc.createElement('script');
s.type = 'text/' + (src.type || 'javascript');
s.src = src.src || src;
s.async = false;
s.onreadystatechange = s.onload = function() {
var state = s.readyState;
if (!callback.done && (!state || /loaded|complete/.test(state))) {
callback();
callback.done = true;
}
};
head.appendChild(s);
}
/*
Start after HEAD tag is closed
*/
setTimeout(function() {
ready = true;
each(queue, function(fn) {
fn();
});
}, 300);
// enable document.readyState for Firefox <= 3.5
if (!doc.readyState && doc.addEventListener) {
doc.readyState = "loading";
doc.addEventListener("DOMContentLoaded", handler = function () {
doc.removeEventListener("DOMContentLoaded", handler, false);
doc.readyState = "complete";
}, false);
}
})(document);