How to Resolve \'It Isn\'t Possible to Write into a Document from an Asynchronously-Loaded External Script\' Error?

Error: "It Isn't Possible to Write into a Document from an Asynchronously-Loaded External Script"

Problem:

Asynchronous loading of scripts can lead to issues when attempting to modify a document using document.write(). After page load execution, a script downloads asynchronously but fails with the console message "It isn't possible to write into a document from an asynchronously-loaded external script unless it is explicitly opened."

Explanation:

Asynchronously loaded scripts execute after the document has been parsed and closed. Consequently, operations such as document.write() become unavailable from within these scripts.

Solution:

To resolve this issue, replace document.write() calls with explicit DOM manipulations. This involves creating DOM elements and inserting them into the parent element using appendChild(), insertBefore(), or setting innerHTML.

Example:

Original Script (Inline, with document.write()):

<code class="html"><div id="container">
<script>
document.write('<span style="color:red;">Hello</span>');
</script>
</div></code>

Modified Script (Loaded Asynchronously, with DOM Manipulation):

<code class="javascript">var container = document.getElementById("container");
var content = document.createElement("span");
content.style.color = "red";
content.innerHTML = "Hello";
container.appendChild(content);</code>

The above is the detailed content of How to Resolve \'It Isn\'t Possible to Write into a Document from an Asynchronously-Loaded External Script\' Error?. For more information, please follow other related articles on the PHP Chinese website!