How to Handle Script Tag Inclusion in JavaScript Strings Without Causing Syntax Errors?

Script Tag Dilemma in JavaScript Strings

In JavaScript programming, inserting a script tag directly inside a quoted string can cause unexpected behavior. When encountered within a string, the HTML parser interprets the closing script tag () as the end of the current script element.

Cause:

The HTML parser processes the page from top to bottom. When it encounters <script> in the string, it expects the opening tag to be followed by script code and a closing tag. The presence of </script> within the string indicates the end of the script element.

Issue:

As a result, any code following the closing script tag is treated as text content outside the script element, leading to unintended execution or syntax errors.

Solution: Concatenation Operator

To avoid this issue, concatenate the string with the script tag using the concatenation operator ( ):

<code class="javascript">var test = '...... ' + '<script>......';</script></code>

By concatenating the script tag as a separate string, the HTML parser correctly interprets it as part of the string.

The above is the detailed content of How to Handle Script Tag Inclusion in JavaScript Strings Without Causing Syntax Errors?. For more information, please follow other related articles on the PHP Chinese website!