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createCDATASection() creates a new CDATA section node, and returns it.

Syntax

CDATASectionNode = document.createCDATASection(data) 
  • CDATASectionNode is a CDATA Section node.
  • data is a string containing the data to be added to the CDATA Section.

Example

var docu = new DOMParser().parseFromString('<xml></xml>',  "application/xml")

var cdata = docu.createCDATASection('Some <CDATA> data & then some');

docu.getElementsByTagName('xml')[0].appendChild(cdata);

alert(new XMLSerializer().serializeToString(docu));
// Displays: <xml><![CDATA[Some <CDATA> data & then some]]></xml>

Notes

  • This will only work with XML, not HTML documents (as HTML documents do not support CDATA sections); attempting it on an HTML document will throw NOT_SUPPORTED_ERR.
  • Will throw a NS_ERROR_DOM_INVALID_CHARACTER_ERR exception if one tries to submit the closing CDATA sequence ("]]>") as part of the data, so unescaped user-provided data cannot be safely used without with this method getting this exception (createTextNode() can often be used in its place).

Specification

Browser compatibility

FeatureChromeEdgeFirefoxInternet ExplorerOperaSafari
Basic support Yes ? Yes ? ? ?
FeatureAndroid webviewChrome for AndroidEdge mobileFirefox for AndroidOpera AndroidiOS SafariSamsung Internet
Basic support Yes Yes ? Yes ? ? ?

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