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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KilledByAPixel

remix of d/34145 by u/KilledByAPixel

function u(t) {

eval(unescape(escape`󨼮󭽩󩍴󪍼󟝨󟜲󜌊󥌽󭌥󝌯󜬊󮬽󜼰󜌊󩭯󬬨󪼽󜜸󞽫󛜭󞽸󛭦󪝬󫍒󩝣󭌨󝌵󜌭󠼨󭌩󚭺󚼊󚍔󟌱󟽩󚽪󚭔󞬨󪬿󪜫󬜺󜜭󥌩󚜪󞜹󛌮󛬮󥌼󜜿󦽺󚼨󪬿󜬰󜌺󮜩󛌵󜌬󪬿󮜺󜬰󜌭󮝝󞭛󮬫󩬫󮜪󪬬󝜰󛍪󟼨󞌫󥌩󚭨󞬨󜬰󜌭󪌩󚭱󧜩󚝩󟝫󙜹󛍪󟝫󟬸󛍹󟝩󚭨󚽨󛍱󟜲󛝔󛍦󟝨󚭱`.replace(/u../g,'')))

Jul 21 2025 5:34 PM UTC

}// 138/140

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Disappearing #Default ✨

u/ximavus

SPOILER ALERT!!!!!!!!
u/ximavus

I found the trick the not dissapearing bars are getting taller

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KilledByAPixel

function u(t) {

eval(unescape(escape`󨼮󭽩󩍴󪍼󟝨󟜲󜌊󥌽󭌥󝌯󜬊󮬽󜼵󜌊󩭯󬬨󪼽󜜸󞽫󛜭󞽸󛭦󪝬󫍒󩝣󭌨󝌰󜌫󠼨󭌪󜜮󝜷󜌸󚜪󜼰󜌫󚍔󟌱󟽩󚽪󚭔󞭪󚬨󪜭󥌫󜬩󚜪󞜹󛌮󛬮󥌼󜜿󦽺󚼨󪬿󜬰󜌺󮜩󛌵󜌬󪬿󮜺󜬰󜌭󮝝󞭛󪬿󮬫󮜫󩬺󮬫󪌬󝜰󛍪󟼨󞌫󥌩󚭨󞬲󜌰󛝦󧜩󚝩󟝫󙜹󛍪󟝫󟬸󛍹󟝩󚭨󚽨󛍦󟝨󚬨󜬭󥌩`.replace(/u../g,'')))

Jul 20 2025 9:43 PM UTC

}// 140/140

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One More #Default

u/KilledByAPixel

I was always fascinated by those old pictures where you can reposition the top half to make an extra person appear.
u/magna

Great!
u/cantelope

holy shit

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rodrigo.siqueira

remix of d/26610 by u/rodrigo.siqueira

function u(t) {

c.style.filter=`invert(`
for(i=1e4;i--;f(0,0,240,t))f=(X,Y,s,r)=>s>8?f(Y+s*S(K=r*i),X,s/2,r/.4):x.fillRect(X*2.7+940,Y*3+540,.2,t<5)

Jul 20 2025 7:40 PM UTC

}// 132/140

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Single line doodle

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rodrigo.siqueira

remix of d/34144 by u/rodrigo.siqueira

function u(t) {

c.style.filter=`invert()`
for(i=1e4;i--;f(0,0,240,t))f=(X,Y,s,r)=>s>1?f(Y+s*T(s/300+r*i)*S(r*i),X,s/2,r/.4):x.fillRect(X*3+940,Y+540,.3,t<5)

Jul 21 2025 4:56 AM UTC

}// 140/140

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Spectral interference glitch

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gueejla

function u(t) {

c.width=1920
for(i=0;i<9;i++)
x.fillStyle=R(C(t/2)*i*20,140+S(t/2)*i*20,150,0.5),
x.fillRect(400+i*100+T(t)*300,540,50,200*1/C(t))

Jul 21 2025 4:48 AM UTC

}// 130/140

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pacificgirls

remix of d/34132 by u/lewdev

function u(t) {

eval(unescape(escape`󭌿󨼮󭽩󩍴󪌽󞜹󞭢󟝛󧜻󩭯󬬨󪜽󝌻󪜭󛜻󮍛󩬽󘭦󪝬󫍔󩝸󭌢󧜨󘭜󭝄󞌳󡍜󭝄󡝅󞌢󛍘󟜳󜌪󤼨󭌭󪜩󚼴󝜬󦜽󞜪󠼨󭌪󜼫󪜩󚼳󜌩󛍾󯬨󭌪󞜰󚜯󞜥󝌭󪝼󯍢󛭰󭝳󪌨󦽘󚼴󛍙󧜩󚝦󫽲󚍥󘍯󩬠󨬩󮍛󩭝󚌢󛬢󛍥󦼰󧜬󛜭󩝛󜝝󚜻󮌮󩍲󨝷󢝭󨝧󩜨󨼬󮌮󩽬󫽢󨝬󠝬󬍨󨜽󛬲󛌹󚜻`.replace(/u../g,'')))

Jul 18 2025 5:45 AM UTC

}// 139/140

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Warplanes

u/lewdev

🤯 That's awesome!
u/cantelope

you can almost smell the mustard gas!
u/tomxor

I only see tofu, tofu fighters i guess

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SkibidiHawk

remix of d/32348 by u/NumbersTada

function u(t) {

t||(s="",f=0)
c.width=1920
f++
x.font="70px sans-serif";x.fillText((f/t).toFixed(100)+" FPS",0,70);

Jul 20 2025 2:55 PM UTC

}// 99/140

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u/Odog8

What does this converge to?
u/joeytwiddle

Framerate #fps I wonder when it will reach 60.0000000000

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rodrigo.siqueira

remix of d/34136 by u/Tekmap

function u(t) {

for(X=Y=i=3e4;i--;x.fillRect(~x.clearRect(960+240*X,540+240*Y,1,.2),i,2e3,!t||.03))j=i>>i,X=S(a=Y+j)*1.2*C(b=X+j*t/19+j),Y=C(a)+C(b)

Jul 17 2025 6:20 AM UTC

}// 132/140

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Strange dynamics

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lewdev

function u(t) {

eval(unescape(escape`󭽩󭍨󚍸󚝴󟽣󛭷󪝤󭍨󟜹󞜺󚍯󫭫󩝹󩍯󭽮󟝯󫭫󩝹󭝰󟝥󟜾󭍨󪝳󦽠󫍵󬭠󦽥󛭷󪍩󨽨󛜳󝽝󧜽󩜮󭍹󬍥󦼵󧜬󦌽󦜽󜼰󛍡󟝵󟝲󟝬󟜰󚜬󬽡󭭥󚌩󛍴󬭡󫭳󫍡󭍥󚍘󚼽󤼨󨜩󛍙󛜽󠼨󨜩󚜬󬭯󭍡󭍥󚍡󚼽󫌿󛜮󜜺󬬿󛬱󞬮󜌵󚜬󬭥󬽴󫽲󩜨󩭩󫍬󥍥󮍴󚌧󧍵󡌸󜽄󧍵󡍅󡜶󙼬󛜵󛌳󚜩`.replace(/u../g,'')))

Jul 16 2025 11:16 PM UTC

}// 139/140

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🛦 Fly the Jet with Arrow Keys #interactive

u/lewdev

I removed so much just to get this to fit. It rotates slightly by default so you don't lose the plane immediately.

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Tekmap

remix of d/33924 by u/tomxor

function u(t) {

for(X=Y=i=3e4;i--;x.fillRect(~x.clearRect(960+240*X,540+240*Y,1,.3),i,2e3,!t||.04))j=i>>i/2e3,X=T(a=Y+j)+T(b=X+j*(t/999+9)),Y=S(a)+C(b)

Jul 17 2025 3:21 AM UTC

}// 135/140

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u/cantelope

suggestive