如何使用 JavaScript 或 Jquery 将数组项向上或向下移动？ [复制]

Question

我有以下 json

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

我想将数组项 2 向上或向下移动。预期的输出如下所示。

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

Answer 1

你可以像这样交换两个元素：

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