Details :: Change indentation length?

My indentation preferences are set 3, but JSEclipse still uses 4 spaces (or a tab) for indentation.

Can you please be more specific? Please tell me where have you set up the tab dimension and if you have checked in JSEclipse preferences to use spaces instead of tabs.

I don't remember exactly and I'm trying a different javascript editor at the moment. It doesn't have the nifty completion features and so on, though, but I remember looking the JSeclipse settings and there was no indentation size preference. Are you saying that you're able to make your JSeclipse use 3-space indentation ? Why not tell me how ?

To make JSEclipse use 3 space indentation you will have to set up in the preferences: 

General/Editors/Text Editors/Displayed tab width : 3

JSEclipse/Replace tabs with spaces: checked

Setting the preferences this way it will make JSEclipse to enter 3 spaces each time you enter a tab. Old indentation will remain the same.

This proposed solution is not acceptable for me.

Changing tab display size in global text editor preferences affects not only JS files but also all text files opened in Eclipse.

When I open some file containing tab characters I want it to be displayed 8 columns per tab. But when I type my own code I wish it to be auto-indented by 2 spaces. These are two different things: tab display size and indent size. They must be set up independently.

Indeed, you are right. I will consider this for a future release.