html single quotes, double quotes escape_html/css_WEB-ITnose

Today, after I edited an HTML template using the TRS backend, saved it and published it, an error occurred when previewing the modified page. But I only added the following red code

content

< /p>

So I removed the above code and it was normal again. The problem appeared in the code I added, but there was no error in the code, so I looked at other codes in the template and found that I found the codes for ' and "

After searching online, I found that ' is the escape character for single quotes, and "" is the escape character for double quotes. I followed suit and changed the above code to

content< /span>

Save and publish preview OK!