What kind of baby spiders have yellow bodies and black triangles on backs and are in clumps?

i think garden Spiders, I had seen some on my porch and then looked on the internet(I was thinking web but that would be kinda a pun ) Hundreds of them though! Made my skin crawl once I realized what I was looking at, and they get to be huge! their body, legs not included gets to almost an inch I think, but supposedly they don't bite. I had seen some last year in the field and was like, OH MY GOD, I'm getting away from this thing, but I didn't want to check if they're friendly or not. Look up baby yellow and black spiders to see some pics, have a good day!

Jen Y