mirror of https://github.com/node-red/node-red.git
40 lines
1.6 KiB
HTML
40 lines
1.6 KiB
HTML
<!--
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Copyright JS Foundation and other contributors, http://js.foundation
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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-->
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<script type="text/html" data-help-name="change">
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<p>Set, change, delete or move properties of a message, flow context or global context.</p>
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<p>The node can specify multiple rules that will be applied in the order they are defined.</p>
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<h3>Details</h3>
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<p>The available operations are:</p>
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<dl class="message-properties">
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<dt>Set</dt>
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<dd>set a property. The value can be a variety of different types, or
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can be taken from an existing message or context property.</dd>
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<dt>Change</dt>
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<dd>search & replace parts of the property. If regular expressions
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are enabled, the "replace with" property can include capture groups, for
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example <code>$1</code>. Replace will only change the type if there
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is a complete match.</dd>
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<dt>Delete</dt>
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<dd>delete a property.</dd>
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<dt>Move</dt>
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<dd>move or rename a property.</dd>
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</dl>
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<p>The "expression" type uses the <a href="http://jsonata.org/" target="_new">JSONata</a>
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query and expression language.
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</p>
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</script>
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