Hello, I've just started using the JS SDK. I have a few questions that I cannot seem to find and/or figure out. 1) Given the initial setup code here, do I create a new instance for every experiment I want to run? 2) How can I target pages specifically based on something in the page? Let's use categories as an example. If the data attribute,

data-category-level

is defined and has a value of

top

? This specific test would only run on top level category pages. 3) Do I need to use

isOn

or

getFeatureValue

to trigger the experiment? In my testing, it seemed the experiment was only viewed when I fired

isOn

for the feature I was using.

Hi Erik, welcome to GrowthBook! Thanks for reaching out with these JS SDK questions.

Appreciate it, thanks!

Hi Erik, I apologize I wasn't able to answer your questions today. Your support request is still on my radar! I'll ask my colleague in Europe to reply when he comes online tomorrow (I'm in the US) but if he is unable to I'll work on this tomorrow morning.

I'll try to answer some of these. 1. A new instance of the SDK per experiment? No, you typically only need one SDK instance to run multiple experiments (of course this may change if you have multiple environments or projects). 2. That's probably best left up to you to rig up using your site code / javascript rather than using GrowthBook targeting attributes. GB attributes are typically used to target specific users (i.e. "US based", "pro members", etc) rather than anything based on the current page being browsed. 3. Yeah, any sort of flag linked to an experiment needs to be evaluated to trigger. IsOn() is one of the ways to do this.

Thanks for the responses. We're just getting everything set up and I hadn't seen much for these. I'll probably have some more questions in the very near future (today probably haha).

I'm not a GA4 expert, but we do have a tutorial for this that is worth a look if you haven't seen it already: https://docs.growthbook.io/guide/GA4-google-analytics

Thanks, I'll read those.