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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ArchMisspelled

function u(t) {

q=0
w=0
m=[[0,0],[1,0],[.5,1]]
for(i=1;i<99;i++){
p=m[Math.round(Math.random()*2)]
q=p[0]+q/2
w=p[1]+w/2
x.fillRect(q*500,-w*500+999,2,2)}

Sep 7 2025 9:47 AM UTC

}// 138/140

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Sierpinski triangle chaos game

u/joeytwiddle

Nice! For even distribution, you can *3 and floor. Or golfed: p=m[i**t%3|0]
u/ArchMisspelled

that looks so much better! thanks joeytwiddle

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rodrigo.siqueira

remix of d/34255 by u/cantelope

function u(t) {

for(x.fillRect(0,0,i=2e4,i),h=540;i--;)l=i**3+t/5,g=S(i),Z=C(l)/g+2,s=9/Z+2,x.clearRect(960+S(l)/g/Z*h*2-960,h+C(i)/Z*h,s/2,s)

Sep 5 2025 10:23 PM UTC

}// 126/140

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Daithi

function u(t) {

v=-2e3;for(i=2e4;i--;)
(j=S(i+t))>.7&&(x.fillStyle=R(v,v),x.fillRect(j**3*S(i*i)*300+v+i%2*800,C(t/2)*C(i*i)*300+v,p=40+(v<=0)*i,p),v=535)

Sep 3 2025 2:31 PM UTC

}// 139/140

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Eyes in the dark

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Daithi

function u(t) {

eval(unescape(escape`󨼮󭽩󩍴󪍼󟜰󞽦󫽲󚍸󛭦󪝬󫍒󩝣󭌨󜌬󜌬󪜽󝍥󝌬󪜩󞽩󛜭󞼩󚍪󟝓󚍩󚽴󚜩󟬮󝬦󙬨󭬽󝜳󝜬󮌮󩭩󫍬󤽴󮝬󩜽󤬨󩬽󜼵󜌬󩬭󪬪󭬥󜬶󞌬󜌬󜜩󛍳󟝓󚍴󚜪󚬵󚭦󛍫󟜨󠼨󭌩󚬪󞌩󚼱󛍸󛭦󪝬󫍒󩝣󭌨󪼪󚍳󚭪󛝳󚽪󚬪󝜪󤼨󪜪󪜩󚭶󚜫󜝥󜼬󪼪󚍳󚭪󛝳󚽪󚭃󚍩󚭩󚜪󭬩󚽶󛌹󛌹󚜩`.replace(/u../g,'')))

Sep 2 2025 1:54 PM UTC

}// 140/140

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Eye of Sauron

u/cantelope

lol
u/lewdev

That's awesome! #LordOfTheRings
u/Daithi

Thanks!

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Daithi

function u(t) {

eval(unescape(escape`𨰮𭱩𩁴𪁼🐰𞱸𛡦𪑬𫁒𩑣𭀨𜀬𜀬𜡥𜰬𜡥𜰩𞱦𫱲𚁩🐱𩐴𞱩𛐭𞰩𮱬👩𚱴𞱸𛡦𪑬𫁓𭁹𫁥👠𪁳𫀨𙁻𜰰𜀭𤰨𫀩𚠱𜐰𯐬𞐰𙐬𝐰𙐩𨀻𤰨𫀩🠮𜐦𙡸𛡦𪑬𫁒𩑣𭀨𤰨𜠪𫀩𚠵𜀰𚱓𚁬𚐪𚁓𚁩𚡩𚐪𝐰𜀩𚰱𩐳𛀊𤰨𫀩𚡃𚁩𚡩𚐪𝐰𜀫𝐴𜀬𞐬𝐩𯐊𒠊𒠻`.replace(/u../g,'')))

Sep 2 2025 12:07 AM UTC

}// 135/140

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Tokamak

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Daithi

function u(t) {

eval(unescape(escape`󨼮󭽩󩍴󪍼󟜰󞽸󛭦󪝬󫍒󩝣󭌨󜌬󜌬󜭥󜼬󜭥󜼩󞽦󫽲󚍩󟜱󩜴󞽩󛜭󞼩󮽬󟝩󚽴󞽸󛭦󪝬󫍓󭍹󫍥󟝠󪍳󫌨󙍻󝜰󛝓󚍬󚜪󝌰󯜬󞜰󙜬󝜰󙜩󨌻󬬽󠼨󫌩󟬰󟼰󞬮󜬻󤼨󫌩󟭲󙬦󮌮󩭩󫍬󤭥󨽴󚍓󚍩󚜪󜬵󜌫󤼨󫌩󚭓󚍩󚭩󚜪󝜰󜌫󜝥󜼬󠼨󪜩󚬲󝜰󚽓󚍬󚜪󠼨󪜪󪜩󚬵󜌰󚼵󝌰󛌹󛌹󚝽`.replace(/u../g,'')))

Sep 2 2025 8:00 AM UTC

}// 140/140

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Black hole eating its companion

u/cantelope

#ouroboros

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rodrigo.siqueira

remix of d/34245 by u/rodrigo.siqueira

function u(t) {

for(c.width|=0,i=1e4;i--;x.fillRect(896+350*(X*S(k=t/2)+Z*C(k)),504+r*S(a)*350+X*99*S(Z),5,5))Z=i/4e3-1,r=(1-Z*Z)**.5,X=r*C(a=i*i-t/3)+Z*Z

Sep 1 2025 1:51 PM UTC

}// 138/140

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Liquid rock

u/cincplug

Well this is actual readable JS and look what it does. Everyone here should do JS and not series of these 󟜱󟜱󟜱, that's not the point

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hugefanofdwitter

function u(t) {

c.width=1920 // clear the canvas
for(i=0;i<9;i++)
x.fillRect(500+i*90+S(t)*900,550,75,150000000) // :3

Sep 2 2025 8:14 PM UTC

}// 102/140

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barcodeep

u/hugefanofdwitter

wow this is great
u/hugefanofdwitter

fricking awesome dude
u/joeytwiddle

wow! at least twice as tall as the default default
u/joeytwiddle

you can golf 150000000 -> 15e7

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Daithi

function u(t) {

eval(unescape(escape`𨰮𭱩𩁴𪁼🐰𒡸𛡦𪑬𫁒𩑣𭀨𜀬𜀬𜡥𜰬𜡥𜰩𒡶🐨𭀯𜰮𜐴𛐰𛠳𝑼𜀩𙐲𘀊𮀮𩡩𫁬𤱴𮑬𩐽𨁨𬱬𚀤𮰳𜀫𜠰𜀪𭡽𛀹𜀥𛀵𜀥𚑠𒡦𫱲𚁩🐱𩐴𞱩𛐭𞰩𒡩𩠨𤰨𪐩🠰𛠹𚐊𮀮𩡩𫁬𤡥𨱴𚁓𚁩𚱴𚐪𚁓𚁩𚡩𚐪𜰰𜀩𚰱𩐳𛁓𚁩𚱴𚐪𠰨𪐪𪐩𚠵𜀰𚰵𝀰𛀵𛀵𚐻`.replace(/u../g,'')))

Aug 30 2025 11:24 PM UTC

}// 136/140

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Portals

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cantelope

remix of d/34248 by u/rodrigo.siqueira

function u(t) {

for(x.fillRect(0,0,i=1e4,i);i--;x.clearRect(960+S(l+=t)/S(q=i%2<.5?n:4-n)/(Z=C(l)/S(q)+2)*(h=540),h+C(q)/Z*h,s=Z>0?4+6/Z:0,s))n=(l=i**.9)%2

Aug 29 2025 5:34 PM UTC

}// 139/140

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note: when Z is negative, the thing is behind the 'camera' and should be omitted, unless you're doing a 360° equirectangular thing... this remix omits the rear activity which would appear as particles going in the wrong direction