JSFiddle - React, Tailwind, and code Playground

HTML

<script type="text/javascript">

var JsonList = 
{
    "CheckSet": [
        {
            "property": "azimuth",
            "result": 0 
        },
        {
            "property": "cue",
            "result": 0 
        } 
    ] 
};


function Check()
{
    //alert('working');
    var looptrav;
    var looplist = JsonList;
    var indicator = 0;

    for(looptrav = 0; looptrav < looplist.CheckSet.length; looptrav++)
    {
        if(typeof(looplist.CheckSet[looptrav].property) != "undefined") 
        {
            looplist.CheckSet[looptrav].result = 1;
            indicator = 1;
            document.write ("Result: "+looplist.CheckSet[looptrav].result);
        }
    }
}

Check();
</script>