The data property of the CharacterData interface represent the value of the current object's data.
A string with the character information contained in the CharacterData node.
When set to the null value, that null value is converted to the empty string (""), so cd.data = null is equivalent to cd.data = "".
Note: CharacterData is an abstract interface. The examples below use two concrete interfaces implementing it, Text and Comment.
<!-- This is an HTML comment -->
<output id="result"></output>const comment = document.body.childNodes[1];
const output = document.getElementById("result");
output.value = comment.data;<span>Result: </span>Not set.const span = document.querySelector("span");
const textNode = span.nextSibling;
textNode.data = "This text has been set using 'textNode.data'.";CharacterData.length returning the length of the data contained in the CharacterData node.