增加一个js函数

2016-07-04 00:25:21 +08:00
parent 2da74dbc1e
commit f3fff63632
1 changed files with 16 additions and 1 deletions
--- a/public/js/core.js
+++ b/public/js/core.js
@@ -329,4 +329,19 @@ $(function() {
 		}
 		msg.show();
 	};
-});
+});
+
+/**
+ * 置顶函数
+ * @param  {[type]} obj [description]
+ * @return {[type]}     [description]
+ */
+function go_to_top(obj){
+	var scrTop = $(window).scrollTop();
+	var windowTop = $(window).height();
+	if ((windowTop-300)<scrTop){
+		$("#"+obj).fadeIn("slow");
+	}else{
+		$("#"+obj).fadeOut("slow");
+	}	
+}