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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PotatoImaginator

function u(t) {

eval(unescape(escape`挮睩摴桞㴰㭸⹡牣⠹㘰ⱶ㴵㐰ⱶⰰⰷ⤻砮晩汬⠩㭦潲⡩㴲㭩ⴭ㭸⹦楬氨⤩砮扥杩湐慴栨砮晩汬却祬攽椿❢汵攧㨧牥搧⤬吽琫椪ㄮ㔷ⱋ㵃⡔⤪⨲ⱸ⹡牣⠹㘰⵶⩓⠲⩔⤪䬬瘭瘪䌨㈪吩⩋ⱶ⨨ㄭ䬩ⰰⰷ⤻`.replace(/u(..)/g,"$1%")))

Jul 25 2026 4:09 AM UTC

}// 134/140

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#circle Balance

u/cantelope

wow!

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jesterjunk

remix of d/35946 by u/rodrigo.siqueira

function u(t) {

eval(unescape(escape`c򛡷򪑤򭁨ꏒꙓ򞱮㶉򞐻򩡯򬠨򪐽򞐻򪐼򫠻򪐫ꏒ򚑳ꏒ򛰨򞐮򜐭򚁴ꋲ򚱩ꋹ򞐩򺐩򛁸򛡢򩑧򪑮򤁡򭁨򚀩򛁪򟑩򚠮򞐫򭀬򮀮򫁩򫡥򥱩򩁴򪀽򬰪򬰪򝀬򮀮򬱴򬡯򪱥򤱴򮑬򩐽򨁨򬱬򚀤笰򚡩ꋑ򝑽ꋈ򝐥򛀤ꞷ򝐪򠰨򪐫򭀩򚠪򞁽򙐩򨀬򮀮򨑲򨰨򫠬㕀򛁳ꊩ򞐬򪠬򪠫ꋩ򚐬򮀮򬱴򬡯򪱥򚀩`.replace(/u\D*/g,``)))

Jul 25 2026 10:05 PM UTC

}// 136/140

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three way remix of https://www.dwitter.net/d/205 and https://www.dwitter.net/d/35944 and https://www.dwitter.net/d/35946

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YusukeJP

function u(t) {

if(t*9%1>.1)return;c.width|=0;for(i=4e2;i--;x.fillRect(i%20*96,(i/20|0)*54+S(i+t)*8+2*Math.random()-1,96,54))x.fillStyle=i<2e2?"#79b":"#665"

Jul 27 2026 4:27 PM UTC

}// 140/140

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PotatoImaginator

function u(t) {

eval(unescape(escape`𨰮𭱩𩁴𪁞👰👍𨑴𪀮𤁉𛰴𞱦𫱲𚁩🐭𝀰𝐻𪐼𝀰𝐻𪐫𚰩𮱦𫱲𚁪🐸𞱪𛐭𞱸𛡢𩑧𪑮𤁡𭁨𚁸𛡦𪑬𫀨𚐩𚑻𮀮𩡩𫁬𤱴𮑬𩐽𨁨𬱬𚀱𜰰𛀱𜀰𙐬𙁻𝐰𛑪𙐲𚠲𝑽𙐩𨀊𮀮𫁩𫡥𥁯𚀹𝠰𛁶🐵𝀰𚱩𚡃𚁴𚐩𒡸𛡡𬡣𚀹𝠰𛁶𛀨𝰲𞐰𜀭𪐪𪐩𚠪𜀮𝐬𨐽𪠪𬀫𬀯𜠫𭀬𨐫𬀩𯑽`.replace(/u../g,'')))

Jul 25 2026 4:38 PM UTC

}// 140/140

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#watermelon #fruit

u/PotatoImaginator

c.width^=p=Math.PI/4;for(i=-405;i<405;i++){for(j=8;j--;x.beginPath(x.fill())){x.fillStyle=hsl(130,100%,${50-j%2*25}%) x.lineTo(960,v=540+i*C(t)) x.arc(960,v,(72900-i*i)**0.5,a=j*p+p/2+t,a+p)}}

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PotatoImaginator

function u(t) {

eval(unescape(escape`𨰮𭱩𩁴𪁞🐰𞱦𫱲𚁩🐰𞱩🀸𞱩𚰫𚑻𩡯𬠨𪠽𜀻𪠼𞀻𪠫𚰩𮱸𛡢𩑧𪑮𤁡𭁨𚁸𛡦𪑬𫀨𚐩𒡸𛡦𪑬𫁓𭁹𫁥👒𚁶🐨𪐫𪠩𙐲𚠲𝐶𛀱𜠸𛀲𝐶𛑶𚐊𮀮𨑲𨰨𜐲𜀫𜠴𜀪𪐬𝠰𚰲𝀰𚡪𛀱𜠰𚰱𜠰𚠨𜠪𚠮𝐭𜐩𚡓𚁴𚰨𪐫𪠩𚡍𨑴𪀮𤁉𚐬𜀬𝰩𯑽`.replace(/u../g,'')))

Jul 25 2026 9:14 AM UTC

}// 130/140

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sin(x)^2+cos(x)^2=1 #circle #trigonometry

u/PotatoImaginator

Code is
u/PotatoImaginator

c.width^=0;for(i=0;i<8;i++){for(j=0;j<8;j++){x.beginPath(x.fill()) x.fillStyle=R(v=(i+j)%2*256,128,256-v) x.arc(120+240*i,60+240*j,120+120*(2**.5-1)*S(t+(i+j)*Math.PI),0,7)}}
u/lewdev

When using https://beta.dwitter.net you can toggle the compression. So copy-pasting the code in the comment isn't necessary.
u/PotatoImaginator

Yes, i realized that recently :)
u/cantelope

so cool

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KilledByAPixel

remix of d/35956 by u/KilledByAPixel

function u(t) {

eval(unescape(escape`󩭯󬬨󪜽󭼽󜽥󜼻󛜭󪜻󮌮󩭩󫍬󤭥󨽴󚌰󛍩󛍷󛌱󚜩󮌮󩭩󫍬󤽴󮝬󩜽󨍨󬽬󚌤󮽩󛼳󛝴󚬹󞝽󘌵󜌥󘌤󮼨󪜭󝜴󜌩󚬪󜬯󭽽󙝠󒭦󫽲󚍁󟜲󜜴󞽁󞽔󚼽󛬰󜜩󝬭󤼨󚌨󦌽󭌫󚍥󟝔󛼱󜌶󚜪󠜭󥌩󯌰󚜪󚬳󚜪󝜾󥍼󯍸󛭤󬭡󭽉󫝡󩽥󚍣󛍔󟜱󛍥󚭷󛌱󛌱󞜹󛌭󛝁󚬹󛌵󝌰󛜴󛽥󛌹󛌸󛽥󚜻`.replace(/u../g,'')))

Jul 24 2026 6:45 PM UTC

}// 139/140

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Wallpaper 🚪

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YusukeJP

function u(t) {

c.width|=0;for(i=2e3;i--;x.fillRect(i%80*24,(i/80|0)*43+S(i/14+t/60)*10+S(i*i)*2,24,43))x.fillStyle=R(45+(j=i<1e3)*8,58+j*15,62+j*50)

Jul 27 2026 4:10 PM UTC

}// 133/140

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YusukeJP

function u(t) {

c.width|=0;for(i=2e3;i--;x.fillRect(i%80*24,(i/80|0)*43+S(i+t/20)*25+S(i*i)*4,24,43))x.fillStyle=R(30+(j=i<1e3)*20,45+j*30,45+j*100)

Jul 27 2026 4:09 PM UTC

}// 132/140

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YusukeJP

function u(t) {

c.width|=0;for(i=2e3;i--;x.fillRect(i%80*24,(i/80|0)*43+S(i+t)*45+C(i/7+t/9)*30+S(i*i+t/13)*18,24,43))x.fillStyle=R(j=i%2,j*90,40+j*140)

Jul 27 2026 3:51 PM UTC

}// 136/140

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PotatoImaginator

function u(t) {

eval(unescape(escape`𨰮𭱩𩁴𪁞🐰𞰊𩡯𬠨𪐽𛐨𨐽𜠵𝠩𞱩🁡𞱩𚰫𚑻𒡸𛡢𩑧𪑮𤁡𭁨𚁸𛡦𪑬𫀨𚐩𒡸𛡦𪑬𫁓𭁹𫁥👒𚀱𜠸𚠨𜐫𚁩𛰵𜐲𚰮𝐩𚠪𛠴𚐬𨐬𜀩𒡸𛡡𬡣𚀹𝠰𚰳𚡩𚡓𚁍𨑴𪀮𤁉𛰴𚡓𚁴𚐩𛀸𜀰𛐳𚡩𚡩𛰵𜐲𚱩𛀱𝐰𚠨𜐭𚁩𛱡𚐪𚠶𚐬𜀬𝰩𯐻`.replace(/u../g,'')))

Jul 26 2026 1:33 AM UTC

}// 129/140

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raw #banana - #fruit

u/PotatoImaginator

c.width^=0; for(i=-(a=256);i<a;i++){ x.beginPath(x.fill()) x.fillStyle=R(128*(1+(i/512+.5)**.4),a,0) x.arc(960+3*i*S(Math.PI/4*S(t)),800-3*i*i/512+i,150*(1-(i/a)**6),0,7)}