分享内容限制

@@ -172,12 +172,36 @@
 
         }
     });
+
+    //截取字符串
+    function cutString(str, len) {
+        //length属性读出来的汉字长度为1
+        if (str.length * 2 <= len) {
+            return str;
+        }
+        var strlen = 0;
+        var s = "";
+        for (var i = 0; i < str.length; i++) {
+            s = s + str.charAt(i);
+            if (str.charCodeAt(i) > 128) {
+                strlen = strlen + 2;
+                if (strlen >= len) {
+                    return s.substring(0, s.length - 1) + "...";
+                }
+            } else {
+                strlen = strlen + 1;
+                if (strlen >= len) {
+                    return s.substring(0, s.length - 2) + "...";
+                }
+            }
+        }
+        return s;
+    }
     
     //构造分享信息
     var shareTitle = $('.title').text();
     var shareImg = $(".share").attr("cover-url");
-    var tools = require("lib/util/tools");
-    var shareDesc = tools.limitWords($(".share").attr("desc"),80);
+    var shareDesc = cutString(($(".share").attr("desc"),80);
     var shareLink = $(".share").attr("data-link");
     /*
      * 微信分享