What are common pitfalls when trying to display PHP content in HTML using JavaScript?

One common pitfall when trying to display PHP content in HTML using JavaScript is forgetting to properly escape special characters in the PHP content. This can lead to syntax errors or unexpected behavior in the JavaScript code. To solve this issue, you can use the `json_encode()` function in PHP to safely encode the PHP content before passing it to JavaScript. 

<?php
$php_content = "This is some PHP content with special characters like ' and \"";
?>
<script>
var js_content = <?php echo json_encode($php_content); ?>;
document.getElementById("content").innerHTML = js_content;
</script>

Keywords

PHP HTML JavaScript DOM manipulation cross-site scripting

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