# Playground

-
{
-
name:"Tom"
-
age:2
-
nums:[
+
0:1
+
1:1
+
2:2
+
3:3
+
4:5
+
5:8
-
friends:[
+
0:{...}
+
name:"Jerry"
+
age:1
+
nums:[...]
+
0:7
+
1:{...}
+
name:"Tuffy"
+
age:1
+
2:{...}
+
name:"Spike"
+
3:{...}
+
name:"Tyke"