Yea, of course it is! It's comparing a jump to joy (at least that's what i think)
Yes, "jumping for joy" is a metaphor because it describes the feeling of extreme happiness and excitement by using physical actions (jumping) to convey an emotional state (joy).
SOMEONE WHO IS HAPPY AND EXCITED
A metaphor assigns an action to words or ideas, but it isn't literal. The water was so refreshing it made my mouth jump for joy. In the sentence, your mouth jumping for joy is a metaphor.
Jumping for Joy was created in 1956.
The duration of Jumping for Joy is 1.52 hours.
Jumping for Joy - 1956 is rated/received certificates of: Australia:G
Out of the Blue - 1996 Jumping for Joy was released on: USA: 1996
Jumping for Joy - 2002 is rated/received certificates of: Netherlands:AL USA:G
like a kangaroo jumping for joy
she/he is a jumping jackrabbit!
Jumping for Joy - 2002 was released on: USA: 25 October 2002 (Chicago International Children's Film Festival)
Glad, Ecstatic, jumping for joy.
You could use jumping like a kangaroo or if your popping up fast you could also write jumping up fast like a jack in the box
Since it is impossible to have an actual bagful of "joy", this is figurative language, a form of metaphor. More common is the expression "bundle of joy" referring to a new baby.