JSFiddle - React, Tailwind, and code Playground

JavaScript

var a = [ {
    "CategoryId" : 1,
    "Name" : "Worktable",
    "SortId" : 1
}, {
    "CategoryId" : 2,
    "Name" : "Bf ",
    "SortId" : 2
} ];

//Swap values
var tmp = a[0].SortId;
a[0].SortId = a[1].SortId;
a[1].SortId = tmp;

alert(JSON.stringify(a) == JSON.stringify([ {
    "CategoryId" : 1,
    "Name" : "Worktable",
    "SortId" : 2
}, {
    "CategoryId" : 2,
    "Name" : "Bf ",
    "SortId" : 1
} ]));