javascript - ajax post special characters

Question

How do I pass a a large string containing characters like '%' and '&' to my php page through ajax post?

In other words how to javascript-encode them and php-decode them?

Answer 1

the encodeURIComponent() JavaScript function can be used to escape any of those characters in either the keys or the values.

PHP will receive and decode it automatically into the $_POST array.

The format of the data should be Query String format, specifically:

Content-Type: application/x-www-form-urlencoded

For example:

Name=Joe&Age=23&City=Altoona

If you use encodeURIComponent() on each key and each value, then join them with =, and group them by &, you won't have any further issues.