node-red/nodes/core/parsers/70-HTML.html

<script type="text/x-red" data-template-name="html">
    <div class="form-row">
        <label for="node-input-tag"><i class="fa fa-filter"></i> <span data-i18n="html.label.select"></span></label>
        <input type="text" id="node-input-tag" placeholder="h1">
    </div>
    <div class="form-row">
        <label for="node-input-ret"><i class="fa fa-sign-out"></i> <span data-i18n="html.label.output"></span></label>
        <select id="node-input-ret" style="width:70%">
            <option value="html" data-i18n="html.output.html"></option>
            <option value="text" data-i18n="html.output.text"></option>
            <option value="attr" data-i18n="html.output.attr"></option>
            <!-- <option value="val">return the value from a form element</option> -->
        </select>
    </div>
    <div class="form-row">
        <label for="node-input-as">&nbsp;</label>
        <select id="node-input-as" style="width:70%">
            <option value="single" data-i18n="html.format.single"></option>
            <option value="multi" data-i18n="html.format.multi"></option>
        </select>
    </div>
    <br/>
    <div class="form-row">
        <label for="node-input-name"><i class="fa fa-tag"></i> <span data-i18n="common.label.name"></span></label>
        <input type="text" id="node-input-name" style="width:70%" data-i18n="[placeholder]common.label.name">
    </div>
    <div class="form-tips"><span data-i18n="[html]html.tip"></span></div>
</script>

<script type="text/x-red" data-help-name="html">
    <p>Extracts elements from an html document held in <code>msg.payload</code> using a selector.</p>
    <h3>Inputs</h3>
    <dl class="message-properties">
    <dt>payload <span class="property-type">string</span></dt>
    <dd>the html string from which to extract elements.</dd>
    <dt class="optional">select <span class="property-type">string</span></dt>
    <dd>if not configured in the edit panel the selector can be set as a property of msg.</dd>
</dl>
    <h3>Output</h3>
    <dl class="message-properties">
        <dt>payload <span class="property-type">array | strings</span></dt>
        <dd>the result can be either a single message with a payload containing an array of the matched elements, or multiple
           messages that each contain a matched element.</dd>
    </dl>
    <h3>Details</h3>
    <p>The selector uses <a href="https://github.com/cheeriojs/cheerio/blob/master/Readme.md" target="_blank">Cheerio</a>
     which uses the <a href="https://github.com/fb55/CSSselect#user-content-supported-selectors" target="_blank">CSS selector</a> syntax.</p>
</script>

<script type="text/javascript">
    RED.nodes.registerType('html',{
        category: 'function',
        color:"#DEBD5C",
        defaults: {
            name: {value:""},
            tag: {value:""},
            ret: {value:"html"},
            as: {value:"single"}
        },
        inputs:1,
        outputs:1,
        icon: "parser-html.png",
        label: function() {
            return this.name||this.tag||"html";
        },
        labelStyle: function() {
            return this.name?"node_label_italic":"";
        }
    });
</script>