JSFiddle - React, Tailwind, and code Playground

HTML

<form id="form1" name="form1" method="post">
    <p>
        <input type="button" name="set_Value" id="set_Value" value="submit" onclick="setValue()" />
    </p>
    <p>
        <label>
            <input type="text" name="bbb" id="bbb" />
        </label>
    </p>
</form>
<script type="text/javascript">
    
    function setValue() {
    
        document.getElementById('bbb').value = "valor 1";
    }
</script>