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do.js
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do.js
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/* Do version 2.0 pre
* creator: kejun (listenpro@gmail.com)
* 最新更新:2011-7-12
*/
/*
* by:mike.hor
* 最新更新 2017-07-20
* 更新支持本地localStorage缓存css和js
*/
(function(win, doc) {
// 已加载模块
var loaded = {},
// 已加载列表
loadList = {},
// 加载中的模块
loadingFiles = {},
// 内部配置文件
config = {
// 是否自动加载核心库
autoLoad: false,
localstorage: window.localStorage ? true : false,
// 加载延迟
timeout: 6000,
deepversion: '1.0.0',
// 核心库
coreLib: [publicPath + "js/jquery.js"],
/* 模块依赖
* {
* moduleName: {
* path: 'URL',
* type:'js|css',
* requires:['moduleName1', 'fileURL']
* }
* }
*/
mods: {}
},
jsSelf = (function() {
var files = doc.getElementsByTagName('script');
return files[files.length - 1];
})(),
// 全局模块
globalList = [],
// 外部参数
extConfig,
// domready回调堆栈
readyList = [],
// DOM Ready
isReady = false,
// 模块间的公共数据
publicData = {},
// 公共数据回调堆栈
publicDataStack = {},
isArray = function(e) {
return e.constructor === Array;
},
getMod = function(e) {
var mods = config.mods,
mod;
if (typeof e === 'string') {
mod = (mods[e]) ? mods[e] : {
path: e
};
} else {
mod = e;
}
return mod;
},
load = function(url, type, charset, cb) {
var wait, n, t, img, version, name
done = function() {
loaded[url] = 1;
cb && cb(url);
cb = null;
win.clearTimeout(wait);
};
if (!url) {
return;
}
if (loaded[url]) {
loadingFiles[url] = false;
if (cb) {
cb(url);
}
return;
}
if (loadingFiles[url]) {
setTimeout(function() {
load(url, type, charset, cb);
}, 10);
return;
}
loadingFiles[url] = true;
wait = win.setTimeout(function() {
/* 目前延时回调处理,超时后如果有延时回调,执行回调,然后继续等
* 延时回调的意义是log延时长的URI,这个处理不属于加载器本身的功能移到外部
* 没有跳过是为了避免错误。
*/
if (config.timeoutCallback) {
try {
config.timeoutCallback(url);
} catch (ex) {}
}
}, config.timeout);
//如果没写type就正则 检测类型
t = type || url.toLowerCase().split(/\./).pop().replace(/[\?#].*/, '');
if (config.localstorage) {
var content = window.localStorage.getItem(url);
if (content) {
addTxt(content, t)
done();
return
} else {
getResource(url, function() {
done();
throw new Error(url + 'have no loading')
}, function(res) {
addTxt(res, t)
window.localStorage.setItem(url, res);
done();
})
}
} else {
getResource(url, function() {
done();
throw new Error(url + 'have no loading')
}, function(res) {
addTxt(res, t)
done();
})
}
},
getResource = function(url, error, success) {
var request = new XMLHttpRequest();
request.open('GET', url, true);
request.onload = function() {
if (request.status >= 200 && request.status < 400) {
var resp = request.responseText;
success(resp)
}
};
request.onerror = function() {
error()
};
request.send();
},
//动态添加js,css文件内容
addTxt = function(text, fileType) {
var head = document.getElementsByTagName('HEAD').item(0);
var link;
if (fileType == "js") {
link = document.createElement("script");
link.type = "text/javascript";
link.innerHTML = text;
} else {
link = document.createElement("style");
link.type = "text/css";
link.innerHTML = text;
}
head.appendChild(link);
},
// 加载依赖论文件(顺序) //deps = ["base"] or deps = ["progress", "dialog"]
loadDeps = function(deps, cb) {
var mods = config.mods,
id, m, mod, i = 0,
len;
id = deps.join('');
len = deps.length;
if (loadList[id]) {
cb();
return;
}
function callback() {
if (!--len) {
loadList[id] = 1;
cb();
}
}
for (; m = deps[i++];) {
//console.log(m); progress
mod = getMod(m);
//console.log(mod) {path: "public/core/module/progress/progress.min.js"}
if (mod.requires) {
loadDeps(mod.requires, (function(mod) {
return function() {
load(mod.path, mod.type, mod.charset, callback);
};
})(mod));
} else {
load(mod.path, mod.type, mod.charset, callback);
}
}
},
/*!
* contentloaded.js
*
* Author: Diego Perini (diego.perini at gmail.com)
* Summary: cross-browser wrapper for DOMContentLoaded
* Updated: 20101020
* License: MIT
* Version: 1.2
*
* URL:
* http://javascript.nwbox.com/ContentLoaded/
* http://javascript.nwbox.com/ContentLoaded/MIT-LICENSE
*
*/
// @win window reference
// @fn function reference
contentLoaded = function(fn) {
var done = false,
top = true,
doc = win.document,
root = doc.documentElement,
add = doc.addEventListener ? 'addEventListener' : 'attachEvent',
rem = doc.addEventListener ? 'removeEventListener' : 'detachEvent',
pre = doc.addEventListener ? '' : 'on',
init = function(e) {
if (e.type == 'readystatechange' && doc.readyState != 'complete') return;
(e.type == 'load' ? win : doc)[rem](pre + e.type, init, false);
if (!done && (done = true)) fn.call(win, e.type || e);
},
poll = function() {
try {
root.doScroll('left');
} catch (e) {
setTimeout(poll, 50);
return;
}
init('poll');
};
if (doc.readyState == 'complete') fn.call(win, 'lazy');
else {
if (doc.createEventObject && root.doScroll) {
try {
top = !win.frameElement;
} catch (e) {}
if (top) {
poll();
}
}
doc[add](pre + 'DOMContentLoaded', init, false);
doc[add](pre + 'readystatechange', init, false);
win[add](pre + 'load', init, false);
}
},
fireReadyList = function() {
var i = 0,
list;
if (readyList.length) {
for (; list = readyList[i++];) {
d.apply(this, list);
}
}
},
d = function() {
//判断当前版本号与缓存版本号
var deepversion = win.localStorage.getItem('deepversion');
if (config.localstorage && deepversion) {
if (config.deepversion.split('.').join('') > deepversion.split('.').join('')) {
win.localStorage.clear();
win.localStorage.setItem('deepversion', config.deepversion);
}
} else {
win.localStorage.setItem('deepversion', config.deepversion);
}
var args = [].slice.call(arguments),
fn, id;
// 加载核心库
if (config.autoLoad &&
!loadList[config.coreLib.join('')]) {
loadDeps(config.coreLib, function() {
d.apply(null, args);
});
return;
}
// 加载全局库
if (globalList.length > 0 &&
!loadList[globalList.join('')]) {
loadDeps(globalList, function() {
d.apply(null, args);
});
return;
}
if (typeof args[args.length - 1] === 'function') {
fn = args.pop();
}
id = args.join('');
if ((args.length === 0 || loadList[id]) && fn) {
fn();
return;
}
//console.log('当前加载mod列表:' + args);
loadDeps(args, function() {
loadList[id] = 1;
fn && fn();
});
};
d.add = function(sName, oConfig) {
if (!sName || !oConfig || !oConfig.path) {
return;
}
config.mods[sName] = oConfig;
};
d.delay = function() {
var args = [].slice.call(arguments),
delay = args.shift();
win.setTimeout(function() {
d.apply(this, args);
}, delay);
};
d.global = function() {
var args = isArray(arguments[0]) ? arguments[0] : [].slice.call(arguments);
globalList = globalList.concat(args);
};
d.ready = function() {
var args = [].slice.call(arguments);
if (isReady) {
return d.apply(this, args);
}
readyList.push(args);
};
d.css = function(s) {
var css = doc.getElementById('do-inline-css');
if (!css) {
css = doc.createElement('style');
css.type = 'text/css';
css.id = 'do-inline-css';
jsSelf.parentNode.insertBefore(css, jsSelf);
}
if (css.styleSheet) {
css.styleSheet.cssText = css.styleSheet.cssText + s;
} else {
css.appendChild(doc.createTextNode(s));
}
};
d.setData = d.setPublicData = function(prop, value) {
var cbStack = publicDataStack[prop];
publicData[prop] = value;
if (!cbStack) {
return;
}
while (cbStack.length > 0) {
(cbStack.pop()).call(this, value);
}
};
d.getData = d.getPublicData = function(prop, cb) {
if (publicData[prop]) {
cb(publicData[prop]);
return;
}
if (!publicDataStack[prop]) {
publicDataStack[prop] = [];
}
publicDataStack[prop].push(function(value) {
cb(value);
});
};
d.setConfig = function(n, v) {
config[n] = v;
return d;
};
d.setFilestate = function() {
};
d.getConfig = function(n) {
return config[n];
};
win.Do = d;
contentLoaded(function() {
isReady = true;
fireReadyList();
});
// 初始外部配置
extConfig = jsSelf.getAttribute('data-cfg-autoload');
if (extConfig) {
config.autoLoad = (extConfig.toLowerCase() === 'true') ? true : false;
}
extConfig = jsSelf.getAttribute('data-cfg-corelib');
if (extConfig) {
config.coreLib = extConfig.split(',');
}
})(window, document);