funny text bookmarklet

javascript:var%20%24jscomp%3D%24jscomp%7C%7C%7B%7D%3B%24jscomp.scope%3D%7B%7D%3B%24jscomp.createTemplateTagFirstArg%3Dfunction(a)%7Breturn%20a.raw%3Da%7D%3B%24jscomp.createTemplateTagFirstArgWithRaw%3Dfunction(a%2Ce)%7Ba.raw%3De%3Breturn%20a%7D%3B(function()%7Bfunction%20a(b%2Cc)%7Breturn%20Math.floor(Math.random()*(c-b)%2Bb)%7Dfunction%20e()%7Bvar%20b%3D%5B%5B150%2C256%5D%2C%5B0%2C190%5D%2C%5B0%2C30%5D%5D%2Cc%3Dfunction()%7Bvar%20f%3Db.splice(Math.floor(Math.random()*b.length)%2C1)%5B0%5D%3Breturn%20Math.floor(Math.random()*(f%5B1%5D-f%5B0%5D))%2Bf%5B0%5D%7D%3Breturn%22rgb(%22%2Bc()%2B%22%2C%22%2Bc()%2B%22%2C%22%2Bc()%2B%22)%22%7Dfor(var%20k%3Dprompt(%22Text%3A%22%2C%22Weee!%22)%2Cg%3D%5B%5D%2Ch%3D0%3B50%3Eh%3Bh%2B%2B)%7Bvar%20d%3Ddocument.createElement(%22div%22)%3Bd.style%3D%22width%3A%20100%25%3B%20margin%3A%20auto%3B%20pointer-events%3A%20none%3B%20user-select%3A%20none%3B%20font-weight%3A%20800%3B%20font-size%3A%20150px%3B%20position%3A%20absolute%3B%20z-index%3A%202147483647%3B%20transition%3A%20all%2010s%20linear%3B%20transform-origin%3A%20center%20center%3B%20text-align%3A%20center%3B%22%3Bd.textContent%3Dk%3Bdocument.body.appendChild(d)%3Bg.push(d)%7DsetInterval(function()%7Bvar%20b%3Dg%5BMath.floor(Math.random()*g.length)%5D%3Bb.style.color%3De()%3Bb.style.opacity%3DMath.random()%2B.1%3Bb.style.transform%3D%22rotate(%22%2Ba(0%2C360)%2B%22deg)%20translate(%22%2Ba(-1E3%2C1E3)%2B%22px%2C%20%22%2Ba(-500%2C500)%2B%22px)%20translate3d(%22%2Ba(0%2C200)%2B%22px%2C%22%2Ba(0%2C200)%2B%22px%2C%22%2Ba(0%2C200)%2B%22px)%20rotateX(%22%2Ba(0%2C360)%2B%22deg)%20rotateY(%22%2Ba(0%2C360)%2B%22deg)%20rotateZ(%22%2Ba(0%2C360)%2B%22deg)%22%7D%2C50)%7D)()%3Bvoid+0
//original code at https://pastebin.com/eTVQc9Pw