JSFiddle - React, Tailwind, and code Playground

JavaScript

var data = {
      "Emma Giles": [
        {"message":"Hi Phil","date":"Tue 10 May 2:55 PM 2011"}
      ],
      "Johnathan Macmanners": [
        {"message":"Hi Emma","date":"Sun 26 June 10:03 PM 2011"}
      ]
    };
    
    'var myData  = data;
    'alert(myData["Emma Giles"].message);
    
    $.each(data, function(name, messages, searchKey) {
        
       if (name === searchKey) 
       {
           var messageText = messages[0].message;
           alert(name + ': ' + messageText);
       }
    });