ndarray中去掉kwargs的原型扩展，bug fix in force

Author: pissang

doc/example/force1.html

@@ -188,9 +188,9 @@
     ) { //点击的是边
         var sourceNode = nodes[data.source];
         var targetNode = nodes[data.target];
-        console.log("选中了边 " + sourceNode.name + ' -> ' + targetNode.name);
+        console.log("选中了边 " + sourceNode.name + ' -> ' + targetNode.name + ' (' + data.weight + ')');
     } else { // 点击的是点
-        console.log("选中了" + data.name);
+        console.log("选中了" + data.name + '(' + data.value + ')');
     }
     console.log(param);
 }

src/chart/force.js

@@ -399,10 +399,13 @@ define(function(require) {
 
             for (var i = 0; i < l; i++) {
                 var link = links[i];
-                //var source = nodes[link.source];
+                // var source = nodes[link.source];
                 // var target = nodes[link.target];
-                var weight = link.weight || 1;
-                linkWeights.push(weight);
+                if (link.weight !== undefined) {
+                    linkWeights.push(link.weight);
+                } else {
+                    linkWeights.push(1);
+                }
 
                 var linkShape = {
                     id : zr.newShapeId(self.type),
@@ -453,14 +456,14 @@ define(function(require) {
                     {
                         source : link.source,
                         target : link.target,
-                        value : link.value || 0
+                        weight : link.weight || 0
                     },
                     // link data index
                     link.rawIndex,
                     // source name - target name
                     source.name + ' - ' + target.name,
-                    // link value
-                    link.value || 0,
+                    // link weight
+                    link.weight || 0,
                     // special
                     // 这一项只是为了表明这是条边
                     true

src/util/kwargs.js

@@ -1,6 +1,5 @@
 define(function(){
-    function kwargs(defaults) {
-        var func = this;
+    function kwargs(func, defaults) {
         /*jshint maxlen : 200*/
         var removeComments = new RegExp('(\\/\\*[\\w\\\'\\,\\(\\)\\s\\r\\n\\*]*\\*\\/)|(\\/\\/[\\w\\s\\\'][^\\n\\r]*$)|(<![\\-\\-\\s\\w\\>\\/]*>)', 'gim');
         var removeWhitespc = new RegExp('\\s+', 'gim');
@@ -42,5 +41,6 @@ define(function(){
         };
     }
     // As function prototype
-    Function.prototype.kwargs = kwargs;
+    // Function.prototype.kwargs = kwargs;
+    return kwargs;
 });