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.

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Current theme challenge: #Food

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PotatoImaginator

function u(t) {

eval(unescape(escape`𨰮𭱩𩁴𪁞🐰𞰊𮀮𩡩𫁬𤡥𨱴𚀰𛀰𛀲𩐳𛀲𩐳𚐻𒡦𫱲𚁩🐸𞱩🠭𞐻𪐭𛐩𮱦𫱲𚁪🐸𞱪🠭𞐻𪠭𛐩𮱸𛡢𩑧𪑮𤁡𭁨𚁸𛡦𪑬𫀨𚐩𒡸𛡦𪑬𫁓𭁹𫁥👒𚀰𛀱𜠸𛀲𝐶𚐊𮀮𨑲𨰨𞐶𜀫𜐲𜀪𪐬𝐴𜀫𜐲𜀪𪠬𝀵𚰱𝐪𤰨𚁩𚡩𚱪𚡪𚐪𚠮𝐭𜠪𭀩𛀰𛀷𚑽𯐻`.replace(/u../g,'')))

Aug 30 2026 1:54 AM UTC

}// 133/140

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#circle #wave 🔵

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PotatoImaginator

function u(t) {

eval(unescape(escape`𨰮𭱩𩁴𪁞🐰𞱡👍𨑴𪀮𨑢𬰊𮀮𩡩𫁬𤡥𨱴𚀰𛀰𛀲𩐳𛀲𩐳𚐊𩡯𬠨𪐽𞐻𪐭𛐾𛐹𞰩𮱷𪑴𪀨𮀩𩡯𬠨𪠽𞀻𪠭𛐾𛐹𞱢𩑧𪑮𤁡𭁨𚁦𪑬𫀨𚐩𚑻𩡩𫁬𤱴𮑬𩐽𘠣𩡦𜀢𒡡𬡣𚀹𝠰𚰱𜠰𚡩𛀵𝀰𚰱𜠰𚡪𛀱𝐪𚁡𚁩𚡃𚁴𚐫𪠪𤰨𭀩𚐫𨐨𪠪𠰨𭀩𛑩𚡓𚁴𚐩𚐬𜀬𝰩𯑽`.replace(/u../g,'')))

Aug 31 2026 8:01 AM UTC

}// 138/140

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spinning inverted #square

u/PotatoImaginator

#inverted

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taupelink

function u(t) {

f=(v,n=7)=>n?n*f(v^v+h,n-1)+(f(v^v*2/3+k,n-1)&2*4**n-7):v;for(i=g=1925;i--;x.fillRect(i,360*t,1,f(k-h/t)+f(h+k/t)&223?6:0))h=g+i/16,k=g+t*40

Aug 29 2026 9:10 PM UTC

}// 140/140

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d/36206

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Axioplase

function u(t) {

w=c.width=2e3
for(i=0;i<1e4;i++)
x.fillRect(w/2+C(t+i)*i/3,500+S(t+i)*i/3,a=20*S((t+i)*23),a)

Aug 28 2026 2:08 PM UTC

}// 93/140

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#spirals

u/Axioplase

If you use 22 instead of 23, you get circles in the negative space.

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Xen

remix of d/36199 by u/Axioplase

function u(t) {

for(i=1e4;i--;x.fillStyle=`hsl(${i},55%,55%,.1`)
x.fillRect(960+C(t+i)*i/9,500+S(t+i)*i/9,a=69*S((t+i)*t/299),a)

Aug 28 2026 3:55 PM UTC

}// 112/140

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rodrigo.siqueira

remix of d/36201 by u/Xen

function u(t) {

for(m=400;m--;x.stroke())i=m&95,x.beginPath(x.strokeStyle=`hsl(${m},99%,${m/4*C(z=t-i)}%,.1`),x.arc(S(z)*m/t+960,540-C(z)*m/t,i+m/t,z,t)

Aug 28 2026 6:38 PM UTC

}// 136/140

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Red vortex

u/cantelope

great

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Xen

remix of d/36153 by u/rodrigo.siqueira

function u(t) {

for(m=400;m--;x.stroke())i=m&95,x.beginPath(x.strokeStyle=`hsl(${m+t*99},99%,${m/2*C(z=t-i)}%,.1`),x.arc(S(z)*m+960,500-C(z)*m,i+C(t)*m,0,t)

Aug 28 2026 4:25 PM UTC

}// 140/140

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rodrigo.siqueira

remix of d/36194 by u/rodrigo.siqueira

function u(t) {

for(m=8e3;m--;x.stroke())i=m&95,x.beginPath(x.strokeStyle=`hsl(${i%40},90%,${i*C(.35/t)}%`),x.arc(C(i)*m+960,S(i)*m+560,(m+t**-9)**.22,0,8)

Aug 28 2026 3:17 AM UTC

}// 139/140

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Particle emitter

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dee-gomma

remix of d/36159 by u/dee-gomma

function u(t) {

eval(unescape(escape`𭱩𭁨𚁸𚑦𫱲𚁣𛡷𪑤𭁨👹🐴𜀰𛁹𚠽𪰽𜐮𝐷𛁡👴𚡫𞱹𛐭𞱦𪑬𫀨𩑬𫁩𬁳𩐨𭰽𞀰𚱩𛁶👩🱷𚰹𚡓𚁴𚡫𚠸𚐺𮐭𭀥𝀪𝀲𛁧𯁼𭰬𩱼𯀲𝠬𜀬𨐫👧𙠦𪰯𜐸𛁧𚡡𯁼𨐫𜐬𫑯𭡥𥁯𚁷𛁶𛁢𩑧𪑮𤁡𭁨𚁦𪑬𫁓𭁹𫁥👒𚁦𚠹𛁩𚡧𚐩𚐩𚐩𩠽𮐥𜠱𛁧👦🀹𙠦𜐳𛁩🐡𮐦𙠹`.replace(/u../g,'')))

Aug 25 2026 4:08 PM UTC

}// 140/140

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#ball bouncing on #spiral staircase

u/dee-gomma

Remixing also https://www.dwitter.net/d/35992
u/UEZ

very nice!
u/neimad

I count the number of different things going on in dweets, and there's at least 13 things going on here. Maybe more. Very impressive.
u/vain

incredibe ❤️

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tzador

function u(t) {

x.fillStyle='#f262';for(i=60;i--;)for(X=(i*77+t*300)%1920,Y=X*7%1080,j=80;j--;)a=S(X/299)+C(Y/299)*2+t/9,x.fillRect(X+=3*C(a),Y+=3*S(a),1,1)

Aug 28 2026 10:12 PM UTC

}// 140/140

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