The AJAX return value of php starts with <metahttp-equiv = Content-, causing parsing exceptions.

The AJAX return value of php starts with & lt; metahttp-equivContent -.. Cause parsing error php AJAX return value start with & lt; meta & nbsp; http-equivContent-Type & nbsp; contenttexthtml; & nbsp; charsetutf-8 & nbsp; & gt; the parsing error occurs and cannot be parsed. Normally, the php AJAX return value should not start The AJAX return value of php starts

Then the parsing error occurs and the parsing fails. Normally, the above meta header should not exist. why?

Resolution error prompt:


The AJAX return value is as follows:

------ Solution ----------------------
You have written HTML code on your php page. change the sentence to header ("content-type: text/html; charset = utf-8"). try again.