define object.assign

libs/utils.js

@@ -8,6 +8,31 @@ function utils() {
 }
 
 utils.prototype.init = function () {
+    // 定义Object.assign
+    if (typeof Object.assign != "function") {
+        Object.assign = function(target, varArgs) { // .length of function is 2
+            if (target == null) { // TypeError if undefined or null
+                throw new TypeError('Cannot convert undefined or null to object');
+            }
+
+            var to = Object(target);
+
+            for (var index = 1; index < arguments.length; index++) {
+                var nextSource = arguments[index];
+
+                if (nextSource != null) { // Skip over if undefined or null
+                    for (var nextKey in nextSource) {
+                        // Avoid bugs when hasOwnProperty is shadowed
+                        if (Object.prototype.hasOwnProperty.call(nextSource, nextKey)) {
+                            to[nextKey] = nextSource[nextKey];
+                        }
+                    }
+                }
+            }
+            return to;
+        };
+    }
+
 
 }