How to use jquery correctly in SharePoint Web Part - jquery doesn't always fire

Question

I\'m learning how to use jquery with SharePoint. My example draws a red box inside the Content Editor Web Part when a link is selected. My code works when the SharePoint p

Answer 1

Recently I have encountered with a problem I think it might help someone.

In SharePoint head tag if you place the script tag like

See the difference then it's working.

I am surprised!