node-red-contrib-diode/diode.html

A simple node to isolate the output of a node or function to that further processing cannot affect the original.

<script type="text/javascript">
    RED.nodes.registerType('diode',{
        category: 'advanced-input',
        color: '#a1b7ff',
        inputLabels: "any input",
        outputLabels: "Copy of the input - not the original!",
        defaults: {
            name: {value:""}
        },
        inputs:1,
        outputs:1,
        icon: "inject.png",
        label: function() {
            return this.name||"diode";
        }
    });
</script>

<script type="text/x-red" data-template-name="diode">
    <div class="form-row">
        <label for="node-input-name"><i class="icon-tag"></i> Name</label>
        <input type="text" id="node-input-name" placeholder="Name">
    </div>
</script>

<script type="text/x-red" data-help-name="diode">
    <h3>Inputs</h3>
    <p>Input to be passed through</p>
    <h3>Outputs</h3>
    <p>Output which is identical to but NOT the original</p>
    <h3>Details</h3>  
    <p>A simple node to isolate the output of a function or node so that further processing cannot affect the original.</p>
    <h3>References</h3>
    <p>See the blog at https://tech.scargill.net/saturday-node-red-sermon for more info</p>
</script>