updated 添加项目

script/common.js

@@ -0,0 +1,95 @@
+if (typeof Array.prototype.indexOf != "function") {
+  Array.prototype.indexOf = function (searchElement, fromIndex) {
+    var index = -1;
+    fromIndex = fromIndex * 1 || 0;
+    for (var k = 0, length = this.length; k < length; k++) {
+      if (k >= fromIndex && this[k] === searchElement) {
+          index = k;
+          break;
+      }
+    }
+    return index;
+  };
+}
+
+if(!String.prototype.trim) {
+  String.prototype.trim = function () {
+    return this.replace(/^\s+|\s+$/g,'');
+  };
+}
+
+//跨浏览器DOM对象
+var DOMUtil = {
+	getStyle:function(node,attr){
+    	return node.currentStyle ? node.currentStyle[attr] : getComputedStyle(node,0)[attr];
+    },
+    getScroll:function(){			//获取滚动条的滚动距离
+    	var scrollPos={};
+	    if (window.pageYOffset||window.pageXOffset) {
+	    	scrollPos['top'] = window.pageYOffset;
+	    	scrollPos['left'] = window.pageXOffset;
+	    }else if (document.compatMode && document.compatMode != 'BackCompat'){
+	    	scrollPos['top'] = document.documentElement.scrollTop;
+	    	scrollPos['left'] = document.documentElement.scrollLeft;
+	    }else if(document.body){
+	    	scrollPos['top'] = document.body.scrollTop;
+	    	scrollPos['left'] = document.body.scrollLeft;
+	    }
+	    return scrollPos;
+    },
+    getClient:function(){			//获取浏览器的可视区域位置
+		var l,t,w,h;
+		l  =  document.documentElement.scrollLeft || document.body.scrollLeft;
+		t  =  document.documentElement.scrollTop || document.body.scrollTop;
+		w =   document.documentElement.clientWidth;
+		h =   document.documentElement.clientHeight;
+		return {'left':l,'top':t,'width':w,'height':h} ;
+	},
+    getNextElement:function(node){	//获取下一个节点
+    	if(node.nextElementSibling){
+    		return node.nextElementSibling;
+    	}else{
+	        var NextElementNode = node.nextSibling;
+	        while(NextElementNode.nodeValue != null){
+	            NextElementNode = NextElementNode.nextSibling
+	        }
+	        return NextElementNode;    		
+    	}
+	},
+	getElementById:function(idName){
+	    return document.getElementById(idName);
+	},
+	getElementsByClassName:function(className,context,tagName){	//根据class获取节点
+		if(typeof context == 'string'){
+			tagName = context;
+			context = document;
+		}else{
+			context = context || document;
+			tagName = tagName || '*';
+		}
+	    if(context.getElementsByClassName){
+	        return context.getElementsByClassName(className);
+	    }
+	    var nodes = context.getElementsByTagName(tagName);
+	    var results= [];
+	    for (var i = 0; i < nodes.length; i++) {
+	        var node = nodes[i];
+	        var classNames = node.className.split(' ');
+	        for (var j = 0; j < classNames.length; j++) {
+	            if (classNames[j] == className) {
+	                results.push(node);
+	                break;
+	            }
+	        }
+	    }
+	    return results;
+	},
+	addClass:function(node,classname){ 			//对节点增加class
+		if(!new RegExp("(^|\s+)"+classname).test(node.className)){
+	   		node.className = (node.className+" "+classname).replace(/^\s+|\s+$/g,'');
+	  	}
+	},
+	removeClass:function(node,classname){		//对节点删除class
+		node.className = (node.className.replace(classname,"")).replace(/^\s+|\s+$/g,'');
+	}
+};