node-red-nodes/function/random/locales/en-US/random.html

<script type="text/html" data-help-name="random">
    <p>Generates a random number between a low and high value. Defaults to 1 to 10.</p>
    <p>If left blank <code>from</code> and <code>to</code> can be set dynamically as below.</p>
    <h3>Inputs</h3>
    <dl class="message-properties">
        <dt>from <span class="property-type">number</span></dt>
        <dd>containing the low value to be used.</dd>
        <dt>to <span class="property-type">number</span></dt>
        <dd>containing the high value to be used.</dd>
    </dl>
    <h3>Details</h3>
    <p>If set to return an integer it can <i>include</i> both the low and high values.
        <code>min <= n <= max</code></p>
    <p>If set to return a floating point value it will be from the low value, up to, but
        not including the high value. <code>min <= n < max</code></p>
</script>