JSFiddle - React, Tailwind, and code Playground

HTML

<div id="matched"></div>

<div id="json">{
   "CacheName":"Default",
       "LastUpdateTime":"\/Date(1396994130568)\/",
       "Type":"Start",
       "TotalItemsCount":3,
       "PassingFilterCount":3,
       "ItemValues":[
      {
         "Fields":{
            "id":"13288263",
            "status":"8",
            "x_cord":"7250600",
            "y_cord":"566620200",
            "code":"1021",
            "sub_code":"1W",
            "priority":"1",
            "units":"1011, 1130, 1201, 1233, 1445, 1501, 1518, 1714, 1726, 1823, 1825, 1832, 3662",
            "ts":"20140402234025UT"
         },
         "Id":"13288263",
         "LastAction":"add"
      },
      {
         "Fields":{
            "id":"13288264",
            "status":"8",
            "x_cord":"",
            "y_cord":"",
            "code":"",
            "sub_code":"",
            "priority":"-1",
            "units":"",
            "ts":""
         },
         "Id":"13288264",
         "LastAction":"add"
      },
      {
         "Fields":{
            "id":"13288265",
            "status":"8",
            "x_cord":"",
            "y_cord":"",
            "code":"",
            "sub_code":"",
            "priority":"-1",
            "units":"",
            "ts":""
         },
         "Id":"13288265",
         "LastAction":"add"
      }
    ]
}</div>

JavaScript

//The json is in the html here, to avoid overwhelming this section
var json_string = document.querySelector("#json");

//Use JSON.parse to make it an object
var json_object = JSON.parse(json_string.innerHTML);
//And remove the json in the html
json_string.remove();
//Will store the matched div
var matched_div = document.querySelector("#matched");

var x = 13288263;
$.each(json_object.ItemValues, function(key, item_value){
    if(item_value.Fields.id == x){
        matched_div.innerHTML = item_value.Fields.id;
        
        //Second part of the question
        var units = item_value.Fields.units;
        if(units != ""){
            var units_array = units.split(', ');
            alert(units_array);
        }
    }
});