Home Web Front-end HTML Tutorial seajs-css less load_html/css_WEB-ITnose

seajs-css less load_html/css_WEB-ITnose

Jun 24, 2016 am 11:39 AM

(function(){    /**     * util-request.js - The utilities for requesting script and style files     * ref: tests/research/load-js-css/test.html     */    function isType(type) {        return function(obj) {            return {}.toString.call(obj) == "[object " + type + "]"        }    }    var isString = isType("String")    var doc = document    var head = doc.head || doc.getElementsByTagName("head")[0] || doc.documentElement    var baseElement = head.getElementsByTagName("base")[0]    var IS_CSS_RE = /\.css(?:\?|$)/i    var IS_LESS_RE = /\.less(?:\?|$)/i    var currentlyAddingScript    var interactiveScript// `onload` event is not supported in WebKit < 535.23 and Firefox < 9.0// ref://  - https://bugs.webkit.org/show_activity.cgi?id=38995//  - https://bugzilla.mozilla.org/show_bug.cgi?id=185236//  - https://developer.mozilla.org/en/HTML/Element/link#Stylesheet_load_events    var isOldWebKit = +navigator.userAgent        .replace(/.*(?:AppleWebKit|AndroidWebKit)\/?(\d+).*/i, "$1") < 536    function isFunction(obj) {        return {}.toString.call(obj) == "[object Function]"    }    function request(url, callback, charset, crossorigin) {        var isLESS = IS_LESS_RE.test(url)        var isCSS = isLESS?isLESS:IS_CSS_RE.test(url)        var node = doc.createElement((isCSS || isLESS) ? "link" : "script")        if (charset) {            var cs = isFunction(charset) ? charset(url) : charset            if (cs) {                node.charset = cs            }        }        if (crossorigin !== void 0) {            node.setAttribute("crossorigin", crossorigin)        }        addOnload(node, callback, isCSS, url)        if (isCSS) {            node.rel = "stylesheet"            node.href = url        }        else {            node.async = true            node.src = url        }        if(url.indexOf("aaa.less.js") !=-1){            url = url;        }        if(isLESS){            node.rel="stylesheet/less"        }        // For some cache cases in IE 6-8, the script executes IMMEDIATELY after        // the end of the insert execution, so use `currentlyAddingScript` to        // hold current node, for deriving url in `define` call        currentlyAddingScript = node        // ref: #185 & http://dev.jquery.com/ticket/2709        baseElement ?            head.insertBefore(node, baseElement) :            head.appendChild(node)        currentlyAddingScript = null    }    function addOnload(node, callback, isCSS, url) {        var supportOnload = "onload" in node        // for Old WebKit and Old Firefox        if (isCSS && (isOldWebKit || !supportOnload)) {            setTimeout(function() {                pollCss(node, callback)            }, 1) // Begin after node insertion            return        }        if (supportOnload) {            node.onload = onload            node.onerror = function() {                seajs.emit("error", { uri: url, node: node })                onload()            }        }        else {            node.onreadystatechange = function() {                if (/loaded|complete/.test(node.readyState)) {                    onload()                }            }        }        function onload() {            // Ensure only run once and handle memory leak in IE            node.onload = node.onerror = node.onreadystatechange = null            // Remove the script to reduce memory leak            if (!isCSS && !seajs.data.debug) {                head.removeChild(node)            }            // Dereference the node            node = null            callback()        }    }    function pollCss(node, callback) {        var sheet = node.sheet        var isLoaded        // for WebKit < 536        if (isOldWebKit) {            if (sheet) {                isLoaded = true            }        }        // for Firefox < 9.0        else if (sheet) {            try {                if (sheet.cssRules) {                    isLoaded = true                }            } catch (ex) {                // The value of `ex.name` is changed from "NS_ERROR_DOM_SECURITY_ERR"                // to "SecurityError" since Firefox 13.0. But Firefox is less than 9.0                // in here, So it is ok to just rely on "NS_ERROR_DOM_SECURITY_ERR"                if (ex.name === "NS_ERROR_DOM_SECURITY_ERR") {                    isLoaded = true                }            }        }        setTimeout(function() {            if (isLoaded) {                // Place callback here to give time for style rendering                callback()            }            else {                pollCss(node, callback)            }        }, 20)    }// For Developers    seajs.request = request    /**     * util-path.js - The utilities for operating path such as id, uri     */    var data = seajs.data    var DIRNAME_RE = /[^?#]*\//    var DOT_RE = /\/\.\//g    var DOUBLE_DOT_RE = /\/[^/]+\/\.\.\//    var MULTI_SLASH_RE = /([^:/])\/+\//g// Extract the directory portion of a path// dirname("a/b/c.js?t=123#xx/zz") ==> "a/b/"// ref: http://jsperf.com/regex-vs-split/2    function dirname(path) {        return path.match(DIRNAME_RE)[0]    }// Canonicalize a path// realpath("http://test.com/a//./b/../c") ==> "http://test.com/a/c"    function realpath(path) {        // /a/b/./c/./d ==> /a/b/c/d        path = path.replace(DOT_RE, "/")        /*         @author wh1100717         a//b/c ==> a/b/c         a///b/////c ==> a/b/c         DOUBLE_DOT_RE matches a/b/c//../d path correctly only if replace // with / first         */        path = path.replace(MULTI_SLASH_RE, "$1/")        // a/b/c/../../d  ==>  a/b/../d  ==>  a/d        while (path.match(DOUBLE_DOT_RE)) {            path = path.replace(DOUBLE_DOT_RE, "/")        }        return path    }// Normalize an id// normalize("path/to/a") ==> "path/to/a.js"// NOTICE: substring is faster than negative slice and RegExp    function normalize(path) {        var last = path.length - 1        var lastC = path.charAt(last)        // If the uri ends with `#`, just return it without '#'        if (lastC === "#") {            return path.substring(0, last)        }        return (path.substring(last - 2) === ".js" ||            path.indexOf("?") > 0 ||            path.substring(last - 3) === ".css" ||            path.substring(last - 4) === ".less" ||            lastC === "/") ? path : path + ".js"    }    var PATHS_RE = /^([^/:]+)(\/.+)$/    var VARS_RE = /{([^{]+)}/g    function parseAlias(id) {        var alias = data.alias        return alias && isString(alias[id]) ? alias[id] : id    }    function parsePaths(id) {        var paths = data.paths        var m        if (paths && (m = id.match(PATHS_RE)) && isString(paths[m[1]])) {            id = paths[m[1]] + m[2]        }        return id    }    function parseVars(id) {        var vars = data.vars        if (vars && id.indexOf("{") > -1) {            id = id.replace(VARS_RE, function(m, key) {                return isString(vars[key]) ? vars[key] : m            })        }        return id    }    function parseMap(uri) {        var map = data.map        var ret = uri        if (map) {            for (var i = 0, len = map.length; i < len; i++) {                var rule = map[i]                ret = isFunction(rule) ?                    (rule(uri) || uri) :                    uri.replace(rule[0], rule[1])                // Only apply the first matched rule                if (ret !== uri) break            }        }        return ret    }    var ABSOLUTE_RE = /^\/\/.|:\//    var ROOT_DIR_RE = /^.*?\/\/.*?\//    function addBase(id, refUri) {        var ret        var first = id.charAt(0)        // Absolute        if (ABSOLUTE_RE.test(id)) {            ret = id        }        // Relative        else if (first === ".") {            ret = realpath((refUri ? dirname(refUri) : data.cwd) + id)        }        // Root        else if (first === "/") {            var m = data.cwd.match(ROOT_DIR_RE)            ret = m ? m[0] + id.substring(1) : id        }        // Top-level        else {            ret = data.base + id        }        // Add default protocol when uri begins with "//"        if (ret.indexOf("//") === 0) {            ret = location.protocol + ret        }        return ret    }    function id2Uri(id, refUri) {        if (!id) return ""        id = parseAlias(id)        id = parsePaths(id)        id = parseVars(id)        id = normalize(id)        var uri = addBase(id, refUri)        uri = parseMap(uri)        return uri    }    var doc = document    var cwd = (!location.href || location.href.indexOf('about:') === 0) ? '' : dirname(location.href)    var scripts = doc.scripts// Recommend to add `seajsnode` id for the `sea.js` script element    var loaderScript = doc.getElementById("seajsnode") ||        scripts[scripts.length - 1]// When `sea.js` is inline, set loaderDir to current working directory    var loaderDir = dirname(getScriptAbsoluteSrc(loaderScript) || cwd)    function getScriptAbsoluteSrc(node) {        return node.hasAttribute ? // non-IE6/7            node.src :            // see http://msdn.microsoft.com/en-us/library/ms536429(VS.85).aspx            node.getAttribute("src", 4)    }// For Developers    seajs.resolve = id2Uri    define("seajs/seajs-css/1.0.5/seajs-css-debug", [], {});})();
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