node-red-contrib-boolean-logic-ultimate/boolean-logic-ultimate/Comparator.html

A set of Node-RED enhanced boolean logic and utility nodes, flow interruption, blinker, debouncer, invert, filter, toggle etc.., with persistent values after reboot. Compatible also with Homeassistant values.

<script type="text/javascript">
    RED.nodes.registerType('Comparator', {
        category: 'Boolean Logic Ultimate',
        color: '#ff8080',
        defaults: {
            name: {
                value: "Comparator"
            },
            property: {
                value: "payload"
            },
            math: {
                value: "==="
            },
            topic1: {
                value: "", required: true
            },
            topic2: {
                value: "", required: true
            }
        },
        inputs: 1,
        outputs: 1,
        icon: "font-awesome/fa-arrows-v",
        label:
            function () {
                return this.name || "Comparator";
            },
        paletteLabel: function () {
            return "Comparator";
        },
        oneditprepare: function () {
            if ($("#node-input-property").val() === "") $("#node-input-property").val("payload");
            $("#node-input-property").typedInput({ default: 'msg', types: ['msg'] });
        }
    });
</script>

<script type="text/html" data-template-name="Comparator">
	<div class="form-row">
		<b>Comparator</b>&nbsp&nbsp&nbsp&nbsp<span style="color:red"><i class="fa fa-youtube-play"></i>&nbsp<a target="_blank" href="https://youtu.be/fDRsQPu3bG4"><u>Youtube Sample</u></a></span>
        <br/>
		<br/>        
	</div>
    <div class="form-row">
        <label for="node-input-name"><i class="icon-tag"></i> Name</label>
        <input type="text" id="node-input-name" placeholder="Topic">
    </div>
    <hr/>
    <div class="form-row">
        <label for="node-input-property"><i class="icon-tag"></i> Input</label>
        <input type="text" id="node-input-property" placeholder="payload">
    </div>
    <div class="form-row">
        <label for="node-input-topic1"><i class="icon-tag"></i> Topic 1</label>
        <input type="text" id="node-input-topic1" placeholder="For example, topic 1">
    </div>
    <div class="form-row">
		<label for="node-input-math"><i class="icon-tag"></i> Operation</label>
		<select type="text" id="node-input-math" placeholder="">
			<option value="===">=== (equals)</option>
            <option value="!==">!== (not equals)</option>
            <option value=">">></option>
            <option value="<"><</option>
			<option value=">=">>=</option>
            <option value="<="><=</option>            
		</select>
	</div>
    <div class="form-row">
        <label for="node-input-topic2"><i class="icon-tag"></i> Topic 2</label>
        <input type="text" id="node-input-topic2" placeholder="For example, topic 2">
    </div>
    
</script>

<script type="text/markdown" data-help-name="Comparator">
<p>The Comparator, compares two msg values and outputs true/false.</p>

|Property|Description|
|--|--|
| Name | It's the node name. This will be also the output topic. |
| Input | It's the msg property to be evaluated. *By default, it is *payload*, but you can also specify other properties, for example "payload.value"*. It **must** be a numeric value. The node will try to automatically convert numeric values expressed as strings, to real numbers. |
| Topic 1 | It's the topic to be evaluated against the second topic. |
| Comparator | It's the comparator. It compares the Topic 1 against the Topic 2. |
| Topic 2 | It's the second topic to be evaluated against the first topic. |


### Input

: reset (boolean) : `msg.reset = true` is used to reset both input values to ***undefined***. The node will execute only the *reset* command, regardless of other message properties.


### Output

1. Standard output
: payload (boolean) : the standard output of the command.

### Details

`msg.payload` is used as the payload of the published message. I'ts true or false based on the result of the compare operation.  

<br/>

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</script>