How to Resolve \"Undefined\" Result When Retrieving Text from a
Tag Using JavaScript?

Susan SarandonOriginal: 2024-10-18 21:14:03275browse

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Obtaining Text Content from a DIV Tag Using Pure JavaScript

If attempting to retrieve the text content of a

tag using JavaScript, the "undefined" value may appear. To rectify this issue, consider employing textContent instead of innerHTML.

Unlike innerHTML, which captures all DOM content into a string, textContent exclusively retrieves the text within the

. For instance, if the following markup exists:

<code class="html"><div id="test">
  Some <span class="foo">sample</span> text.
</div></code>

Using innerHTML would yield:

<code class="js">var node = document.getElementById('test');

var htmlContent = node.innerHTML;
// htmlContent = "Some <span class="foo">sample</span> text."</code>

Whereas textContent provides:

<code class="js">var textContent = node.textContent;
// textContent = "Some sample text."</code>

This distinction is crucial when handling DOM content that may include both text and non-text elements.

For additional information, refer to the Mozilla Developer Network (MDN) documentation on:

[textContent](https://developer.mozilla.org/en-US/docs/Web/API/Node/textContent)
[innerHTML](https://developer.mozilla.org/en-US/docs/Web/API/Element/innerHTML)

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How to Resolve \"Undefined\" Result When Retrieving Text from a
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