JSFiddle - React, Tailwind, and code Playground

JavaScript

var data = [{
            data1: 'foo',
            data2: 'bar',
            something1: 'sparky',
            something2: 'arf arf!'},
        {
            data1: 'My name is',
            data2: 'What?',
            something1: 'my name is',
            something2: 'Who?!'}
        ];
        
        function test(data, prop) {
            var d_length = data.length;
            for (var i = 0; i < d_length; i++) {
                alert(data[i][prop]);
            }
        }
        
        test(data, 'data1');