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学生学习页面_files/fileloader.js.下载

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+/**
+ * 动态加载文件到doc中，并依据obj来设置属性，加载成功后执行回调函数fn
+ * @name loadFile
+ * @example
+ * //指定加载到当前document中一个script文件，加载成功后执行function
+ * utils.loadFile( document, {
+ *     src:"test.js",
+ *     tag:"script",
+ *     type:"text/javascript",
+ *     defer:"defer"
+ * }, function () {
+ *     console.log('加载成功！')
+ * });
+ */
+ var loadFile = function() {
+	var tmpList = [];
+
+	function getItem(doc, obj) {
+		try {
+			for (var i = 0, ci; ci = tmpList[i++];) {
+				if (ci.doc === doc && ci.url == (obj.src || obj.href)) {
+					return ci;
+				}
+			}
+		} catch (e) {
+			return null;
+		}
+
+	}
+
+	return function (doc, obj, fn) {
+		var item = getItem(doc, obj);
+		if (item) {
+			if (item.ready) {
+				fn && fn();
+			} else {
+				item.funs.push(fn)
+			}
+			return;
+		}
+		tmpList.push({
+			doc:doc,
+			url:obj.src || obj.href,
+			funs:[fn]
+		});
+		if (!doc.body) {
+			var html = [];
+			for (var p in obj) {
+				if (p == 'tag')continue;
+				html.push(p + '="' + obj[p] + '"')
+			}
+			doc.write('<' + obj.tag + ' ' + html.join(' ') + ' ></' + obj.tag + '>');
+			return;
+		}
+		if (obj.id && doc.getElementById(obj.id)) {
+			return;
+		}
+		var element = doc.createElement(obj.tag);
+		delete obj.tag;
+		for (var p in obj) {
+			element.setAttribute(p, obj[p]);
+		}
+		element.onload = element.onreadystatechange = function () {
+			if (!this.readyState || /loaded|complete/.test(this.readyState)) {
+				item = getItem(doc, obj);
+				if (item.funs.length > 0) {
+					item.ready = 1;
+					for (var fi; fi = item.funs.pop();) {
+						fi();
+					}
+				}
+				element.onload = element.onreadystatechange = null;
+			}
+		};
+		element.onerror = function () {
+			throw Error('The load ' + (obj.href || obj.src) + ' fails,check the url settings of file ueditor.config.js ')
+		};
+		doc.getElementsByTagName("head")[0].appendChild(element);
+	};
+}();
+
+
+var loadMultiFile = function(fileArray, callback) {
+	if(Object.prototype.toString.call(fileArray) === '[object Array]') {
+		var iLen = fileArray.length;
+		if(!iLen) {
+			return;
+		}
+		var iCount = 0;
+		for(var i = 0; i < fileArray.length; i++) {
+			loadFile(document, fileArray[i], function() {
+				iCount ++;
+				if(iLen == iCount) {
+					try{
+						callback && callback();
+					} catch(e){}
+				}
+			});
+		}
+	} else if(Object.prototype.toString.call(fileArray) === '[object Object]'){
+		loadFile(document, fileArray, function() {
+			try{
+				callback && callback();
+			} catch(e){}
+		});
+	}
+};