JSFiddle - React, Tailwind, and code Playground

JavaScript

var data = [
        { Name: "Jake", Gender: "Male", Address: "Address1" },
        { Name: "Laura", Gender: "Female", Address: "Address2" },
    ];
    for (var i = 0; i < data.length; i++) {
        if (data[i].Gender == "Male") {
            data[i].Icon = "image/male.png";
            
        } else {
            data[i].Icon = "image/female.png";
        }
    }

    var result = data;
    alert(result[0].Icon);
    alert(result[1].Icon);