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Writes a string of text to a document stream opened by document.open().
document.write writes to the document stream, calling document.write on a closed (loaded) document automatically calls document.open, which will clear the document.Syntax
document.write(markup);
markup is a string containing the text to be written to the document.
Example
<html>
<head>
<title>write example</title>
<script>
function newContent() {
alert("load new content");
document.open();
document.write("<h1>Out with the old - in with the new!</h1>");
document.close();
}
</script>
</head>
<body onload="newContent();">
<p>Some original document content.</p>
</body>
</html>
Notes
Writing to a document that has already loaded without calling document.open() will automatically perform a document.open call. Once you have finished writing, it is recommended to call document.close(), to tell the browser to finish loading the page. The text you write is parsed into the document's structure model. In the example above, the h1 element becomes a node in the document.
If the document.write() call is embedded within an inlined HTML <script> tag, then it will not call document.open(). For example:
<script>
document.write("<h1>Main title</h1>")
</script>
document.write and document.writeln do not work in XHTML documents (you'll get a "Operation is not supported" [NS_ERROR_DOM_NOT_SUPPORTED_ERR] error in the error console). This happens when opening a local file with the .xhtml file extension or for any document served with an application/xhtml+xml MIME type. More information is available in the W3C XHTML FAQ.document.write in deferred or asynchronous scripts will be ignored, and you'll get a message like "A call to document.write() from an asynchronously-loaded external script was ignored" in the error console.document.write causing the error SCRIPT70: Permission denied if you use a few document.write inside iframe. This error occurs only in the Edge. In all other browsers this error is not observed.