update bi.excel_table

uidoc/detailed/table/bi.excel_table.md

@@ -5,31 +5,27 @@
 
 {% common %}
 ```javascript
+var items = [];
+
+for (var i = 0; i < 8; i++) {
+	var temp = [];
+	for (var j = 0; j < 6; j++) {
+  	var obj = {
+    	type: "bi.label",
+      cls: "layout-bg1",
+      text: "第" + (i+1) + "行第" + (j+1) + "列"
+    };
+    temp.push(obj);
+  }
+  items.push(temp);
+}
+
 BI.createWidget({
   type: "bi.excel_table",
   element: "#wrapper",
   width: 500,
   columnSize: [200,200,200,200,200],
-  items: [
-    [{
-      type: "bi.label",
-      cls: "layout-bg1",
-      text: "第一行第一列"
-    }, {
-      type: "bi.label",
-      cls: "layout-bg2",
-      text: "第一行第二列"
-    }],
-    [{
-      type: "bi.label",
-      cls: "layout-bg3",
-      text: "第二行第一列"
-    }, {
-      type: "bi.label",
-      cls: "layout-bg4",
-      text: "第二行第二列"
-    }]
-  ] 
+  items: items,
 });
 ```