JSFiddle - React, Tailwind, and code Playground
HTML
<html>
<body>
<input type="text" id ="name" name="name" />
</body>
</html>
JavaScript
var a = document.getElementById("name");
a.value = "some value";
<html>
<body>
<input type="text" id ="name" name="name" />
</body>
</html>
var a = document.getElementById("name");
a.value = "some value";