Dwitter - javascript demos in 140 characters

function u(t) {

c.width=1920 // clear the canvas
for(i=0;i<9;i++)
x.fillRect(400+i*100+S(t)*300,400,50,200) // draw 50x200 rects

} // 122/140

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    u(t) is called 60 times per second.
    t: Elapsed time in seconds.
    S: Shorthand for Math.sin.
    C: Shorthand for Math.cos.
    T: Shorthand for Math.tan.
    R: Function that generates rgba-strings, usage ex.: R(255, 255, 255, 0.5)
    c: A 1920x1080 canvas.
    x: A 2D context for that canvas.

Try the new frontend: beta.dwitter.net
Current theme challenge: #Food

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DazeWare

remix of d/33676 by u/DazeWare

function u(t) {

c.style.filter=`invert(`
for(i=4e4;i--;x.fillRect(960+C(k=i*20+r+r**r)*2e3/Z,560-S(k+t-t)*2e3/Z,.4,t+2))r=S(i*i>>t)-t,Z=C(S(i>9))*9/t*S(r*t)

Apr 29 2025 7:02 PM UTC

}// 140/140

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rodrigo.siqueira

remix of d/33669 by u/rodrigo.siqueira

function u(t) {

c.style.filter=`invert(`
for(i=4e4;i--;x.fillRect(960+C(k=i*20+r+r**r)*2e3/Z,560-S(k)*2e3/Z,.1,t<5))r=S(i*i/t)-t,Z=C(S(i*50))*13-1/r**S(r*3)

Apr 29 2025 1:35 PM UTC

}// 140/140

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Star fold

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DazeWare

remix of d/33675 by u/DazeWare

function u(t) {

c.style.filter=`invert(`
for(i=4e4;i--;x.fillRect(960+C(k=i*20+r+r**r)*2e3/Z,560-S(k)*2e3/Z,.4,t+2))r=S(i*i/t)-t,Z=C(S(i*95))*9-1/r*S(r*t)

Apr 29 2025 6:57 PM UTC

}// 138/140

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u/Xen

very sexy, should keep filling to edge ;)

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Xen

remix of d/33665 by u/Xen

function u(t) {

with(x)fill(arc(950,W=550,W/t,!beginPath(fillStyle=t<7?R(z=W-W/t,Z=t<5&&t>2?z:0.1,Z,Z):"white"),9)),t<7?fillRect(675,525,W,49):0

Apr 28 2025 3:04 PM UTC

}// 128/140

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Improved and golfed to fit #pokemon

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DazeWare

remix of d/33673 by u/rodrigo.siqueira

function u(t) {

c.style.filter=`invert(`
for(i=4e4;i--;x.fillRect(960+C(k=i*20+r+r**r)*2e3/Z,560-S(k)*2e3/Z,.1,t<5))r=S(i*i/t)-t,Z=C(S(i*50))*9-1/r*S(r*t)

Apr 29 2025 6:51 PM UTC

}// 138/140

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BriSeven

remix of d/33661 by u/BriSeven

function u(t) {

eval(unescape(escape`挮獴祬攽❦楬瑥爺楮癥牴⠧ੲ㵴㽲㩘㵙㴸〰ⱗ㴲攳ⱈ㴱攳ⱸ⹦楬汓瑹汥㵠桳氨⑻㤹⩴素㤹┵〥怬砮晩汬剥捴⡘⬽㔪匨爫㵓⠨琫堩⩲⤯㈩ⱙ⬽㔪䌨爩ⱔ㴹⩓⡴⤬吩ⱘ㴨堥圫圩╗ⱙ㴨夥䠫䠩╈`.replace(/u([^D].)/g,'$1%')))

Apr 28 2025 4:06 AM UTC

}// 133/140

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Light painting

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Axioplase

function u(t) {

c.width=2e3
for(i=-3;i<23;i++)
x.fillRect(i*30+S(t)*300,0,9,1e3)
for(j=3;j--;){x.save()
x.rotate(1)
x.drawImage(c,j*20,-j*1e3)
x.restore()}

Apr 30 2025 12:29 AM UTC

}// 139/140

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rodrigo.siqueira

remix of d/33659 by u/rodrigo.siqueira

function u(t) {

c.width|=c.style.filter=`invert(1)`
for(i=1e4;i--;x.fillRect(960+X/Z,560-Y/Z,3,2))
r=S(i*i),X=S(k=i/3)*740,Y=C(k)*740,Z=C(S(i/4-t/4))*4-.4/r

Apr 28 2025 1:55 PM UTC

}// 140/140

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Trefoil star rotation #knot

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BriSeven

remix of d/17808 by u/BriSeven

function u(t) {

eval(unescape(escape`楦⠡琩愽䅲牡礨ㅥ㐩⹦楬氨ㄩ㭸⹳瑲潫攨湥眠偡瑨㉄⡠䴹〰‶〰氤筡⹭慰⠨砩㴾孃⡸⭴⤬匨砫琩崩絠⤩㭡㵡⹭慰⠨砬椩㴾砫匨琪椪砩⼹⤬砮汩湥坩摴栽㈰ⱸ⹳瑲潫敓瑹汥㵠桳氨⑻㤹⩴素㤹┵〥怠`.replace(/u([^D].)/g,'$1%')))

Apr 29 2025 3:53 AM UTC

}// 136/140

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Random walk rainbow windmill. Interesting things happen ias corner caps increase.

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KilledByAPixel

remix of d/33656 by u/KilledByAPixel

function u(t) {

x.fillStyle=`hsl(${t*99} 99%50%`
for(i=40;i--;x.drawImage(c,X=i*55-T,Y=j%2e3-T,T,T,X+S(j),Y-j%2,T,T=700))x.fillRect(i,1079,j=i**3.1+t,1)

Apr 27 2025 4:10 PM UTC

}// 136/140

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Melt Rainbow 🌈