---恢復內容開始---
今天學習了json和數組的嵌套，例如var a={wenke："文科"，like：["數學","物理","化學"]}，
"wenke"，"like"為a的key，類似數組的下標，可以自定義，也方便存儲一些信息，其中a["like"]為一個數組，當我們想輸入“數學”的時候，可以這樣取出：
alert ["like"][0];
做個復雜一點的例題：
設計一個json 將下面所有信息存儲起來，有三個年級，每個年級三個班，每個班有三個學生，學生信息如下：
小紅 女 15
家屬：紅1 女 16
紅2 女 17
紅3 女 18
小明 男 16
家屬：明1 男 17
明2 男 18
明3 男 19
小剛 男 30
家屬：剛1 男 31
剛2 男 32
剛3 男 33
var a =
{
一年級:
{
一班:
{
xiaohong:["小紅","女",15,[["紅1","女",16],["紅2","女",17],["紅3","女",18]]],
xiaoming:["小明","男",16,[["明1","男",17],["明2","男",18],["明3","男",19]]],
xiaogang:["小剛","男",30,[["剛1","男",31],["剛2","男",32],["剛3","男",33]]]
},
二班:
{
xiaohong:["小紅","女",15,[["紅1","女",16],["紅2","女",17],["紅3","女",18]]],
xiaoming:["小明","男",16,[["明1","男",17],["明2","男",18],["明3","男",19]]],
xiaogang:["小剛","男",30,[["剛1","男",31],["剛2","男",32],["剛3","男",33]]]
},
三班:
{
xiaohong:["小紅","女",15,[["紅1","女",16],["紅2","女",17],["紅3","女",18]]],
xiaoming:["小明","男",16,[["明1","男",17],["明2","男",18],["明3","男",19]]],
xiaogang:["小剛","男",30,[["剛1","男",31],["剛2","男",32],["剛3","男",33]]]
}
},
二年級:
{
一班:
{
xiaohong:["小紅","女",15,[["紅1","女",16],["紅2","女",17],["紅3","女",18]]],
xiaoming:["小明","男",16,[["明1","男",17],["明2","男",18],["明3","男",19]]],
xiaogang:["小剛","男",30,[["剛1","男",31],["剛2","男",32],["剛3","男",33]]]
},
二班:
{
xiaohong:["小紅","女",15,[["紅1","女",16],["紅2","女",17],["紅3","女",18]]],
xiaoming:["小明","男",16,[["明1","男",17],["明2","男",18],["明3","男",19]]],
xiaogang:["小剛","男",30,[["剛1","男",31],["剛2","男",32],["剛3","男",33]]]
},
三班:
{
xiaohong:["小紅","女",15,[["紅1","女",16],["紅2","女",17],["紅3","女",18]]],
xiaoming:["小明","男",16,[["明1","男",17],["明2","男",18],["明3","男",19]]],
xiaogang:["小剛","男",30,[["剛1","男",31],["剛2","男",32],["剛3","男",33]]]
}
},
三年級:
{
一班:
{
xiaohong:["小紅","女",15,[["紅1","女",16],["紅2","女",17],["紅3","女",18]]],
xiaoming:["小明","男",16,[["明1","男",17],["明2","男",18],["明3","男",19]]],
xiaogang:["小剛","男",30,[["剛1","男",31],["剛2","男",32],["剛3","男",33]]]
},
二班:
{
xiaohong:["小紅","女",15,[["紅1","女",16],["紅2","女",17],["紅3","女",18]]],
xiaoming:["小明","男",16,[["明1","男",17],["明2","男",18],["明3","男",19]]],
xiaogang:["小剛","男",30,[["剛1","男",31],["剛2","男",32],["剛3","男",33]]]
},
三班:
{
xiaohong:["小紅","女",15,[["紅1","女",16],["紅2","女",17],["紅3","女",18]]],
xiaoming:["小明","男",16,[["明1","男",17],["明2","男",18],["明3","男",19]]],
xiaogang:["小剛","男",30,[["剛1","男",31],["剛2","男",32],["剛3","男",33]]]
}
}
}
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//如果我們要取出一年級二班小剛的家屬剛1的年齡
console.log(a["一年級"]["二班"]["xiaogang"][3][0][2])；