JSFiddle - React, Tailwind, and code Playground

JavaScript

var result = [{
    "uId": 2,
        "name": "Jeremy",
        "img": "images/jeremy.jpg",
        "tabs": [{
        "tabId": 1,
            "points": 100
    }, {
        "tabId": 2,
            "points": 1
    }],
        "tasks": [{
        "uId": 2,
            "tabId": 1,
            "name": "tasks 1 of Jeremy Lin"
    }, {
        "uId": 2,
            "tabId": 1,
            "name": "tasks 2 of Jeremy Lin"
    }]
}, {
    "uId": 3,
        "name": "Jordon",
        "img": "images/jordan.jpg",
        "tabs": [{
        "tabId": 1,
            "points": 180
    }],
        "tasks": [{
        "uId": 3,
            "tabId": 1,
            "name": "tasks 1 of Jordan"
    }, {
        "uId": 3,
            "tabId": 1,
            "name": "tasks 2 of Jordan"
    }]
}];

var tabs = [{"uId":"2","tabId":1,"tabName":"Main","points":"10","active":"true"},{"uId":"3","tabId":2,"tabName":"Photography","points":"20","active":""}];

var tasks = [{"taskId":3,"taskName":"Sing Sing Gem","priorty":3,"date":"2014-04-25","done":0,"tabId":1,"uId":"2"},{"taskId":4,"taskName":"Shooting","priorty":4,"date":"2014-04-25","done":0,"tabId":2,"uId":"3"}];

var uidSet = {};

var UIDSortFunction = function(a,b){
    uidSet[a.uId] = 1;
    return a.uId - b.uId;
};
tabs.sort(UIDSortFunction);
tasks.sort(UIDSortFunction);

var endResult = [];

var i, j, tabsLen = tabs.length, tasksLen = tasks.length, k = 0;


for(var key in uidSet)
{
    if(uidSet.hasOwnProperty(key))
    {
        endResult.push({
            uId : key,
            tabs:[],
            tasks:[]
        });
        for(i = 0; i < tabsLen; ++i)
        {
            if(tabs[i].uId === key)
                endResult[k].tabs.push({
                    tabId:tabs[i].tabId,
                    tabName: tabs[i].tabName,
                    points: tabs[i].points
                });
        }
        for(j = 0; j < tasksLen; ++j)
        {
            if(tasks[j].uId === key)
                endResult[k].tasks.push({
           ...