如何使用JavaScript或Jquery向上或向下移動數組項目？

Question

我有以下的JSON

{ "EmployeeLists": [ 
{ 
    "ID": 1, 
    "NAME": "Anand", 
    "Salary": 90000 
}, 
{ 
    "ID": 2, 
    "NAME": "Anbu", 
    "Salary": 80000 
}, 
{ 
    "ID": 3, 
    "NAME": "Bala", 
    "Salary": 85000 
} ]} 

我想數組項2移動到向上或向下。預期產出如下。

{ "EmployeeLists": [ 
{ 
    "ID": 2, 
    "NAME": "Anbu", 
    "Salary": 80000 
}, 
{ 
    "ID": 1, 
    "NAME": "Anand", 
    "Salary": 90000 
}, 
{ 
    "ID": 3, 
    "NAME": "Bala", 
    "Salary": 85000 
} ]} 

Answer 1

您可以交換兩個元素，像這樣：

var x = EmployeeLists[2]; 
EmployeeLists[2] = EmployeeLists[1]; 
EmployeeLists[1] = x;