var numbers = [1, 2, 3, 4];
var listOfNumbers = '';
_.each(numbers, function (x) { listOfNumbers += x + ' ' });
console.log("listOfNumbers", listOfNumbers);
console.log('11111');
<html>
<head>
<script type = "text/JavaScript" src = "https://cdn.jsdelivr.net/npm/lodash@4.17.20/lodash.min.js"></script>
</head>
<body>
</body>
</html>