如何快速的获取这个JSon里面的某个具体的值？用each吗？

[{"Grate":89,"ID":1,"Name":"Lili"},{"Grate":56,"ID":2,"Name":"Jhon"},{"Grate":55,"ID":3,"Name":"Lusy"},{"Grate":90,"ID":4,"Name":"Kenny"}] [{"Grate":89,"ID":1,"Name":"Lili"},{"Grate":56,