Who Add "_" Single Underscore Query Parameter?
Solution 1:
jQuery adds a parameter like that to get around IE's caching.
edit: it only adds it for get requests, and only if the option cache is false:
cache: false
Solution 2:
It could be the JQuery CacheBuster parameter.
Resources :
- [jQuery] GData JSON queries "Invalid query parameters:_"
- [jQuery] Turn off Cache Busting in $.getScript
- Cache-busting