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

Please log in (or register) to post a dweet (copy-paste the code somewhere safe to save it meanwhile)


    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

show FPS hide FPS share fullscreen

rodrigo.siqueira

remix of d/35119 by u/rodrigo.siqueira

function u(t) {

for(i=3e4;i--;x.fillRect(940+X*80,540-Y*99,t<3,.1))
F=3+i%(1+15/t),X=F*S(i),Y=F*C(i*i)/2

Mar 26 2026 12:56 AM UTC

}// 88/140

Please log in (or register) to post as a new dweet (copy-paste code somewhere safe to save it meanwhile).

Vanishing point room

show FPS hide FPS share 1 remix fullscreen

rodrigo.siqueira

remix of d/34910 by u/rodrigo.siqueira

function u(t) {

c.style.filter='invert()sepia('
for(i=1e4;i--;x.fillRect(960+X*20,540-Y*50,t<3,.1))F=i%(32/t),
X=F*S(k=i/t)-F*S(K=k/1.1)*2,Y=F*C(K+S(K))

Mar 24 2026 1:54 PM UTC

}// 136/140

Please log in (or register) to post as a new dweet (copy-paste code somewhere safe to save it meanwhile).

Light at the end of the tunnel #train

u/cantelope

nice

show FPS hide FPS share fullscreen

KilledByAPixel

function u(t) {

eval(unescape(escape`󡬽󧼽󟭻󭍲󮝻󨜽󩝶󨝬󚍃󛭶󨝬󭝥󚝽󨽡󭍣󪌨󩜩󮽡󟝥󯜊󭌦󙭅󨍤󪝶󨌊󠼮󪝮󫭥󬭈󥍍󣌽󨜊󡝠󪝮󬍵󭍠󒭃󛭳󭍹󫍥󟜧󨭯󬭤󩝲󞬱󬍸󘍳󫽬󪝤󙼊󠼮󩭯󨽵󬼨󚜊󠼮󫽮󪽥󮝤󫽷󫬽󩜽󟭥󛭫󩝹󠽯󩍥󛜱󜽼󯍆󚌩󯜊󭍼󯍆󚍅󟝟󟜾󨼮󨭥󩭯󬭥󚍃󟝤󫽣󭝭󩝮󭌮󨽲󩝡󭍥󡝬󩝭󩝮󭌨󧼩󚜩`.replace(/u../g,'')))

Mar 26 2026 4:44 PM UTC

}// 139/140

Please log in (or register) to post as a new dweet (copy-paste code somewhere safe to save it meanwhile).

JS Console 💻

u/ximavus

goodness how did you even come close to fit this

show FPS hide FPS share fullscreen

dee-gomma

remix of d/35099 by u/dee-gomma

function u(t) {

eval(unescape(escape`𨰮𭱩𩁴𪀽𜠹𝀊𭀿𬠽𜀺𬰽𙰾𙰊𫱮𪱥𮑤𫱷𫠽𩐽🡥𛡰𬡥𭡥𫡴𡁥𩡡𭑬𭀨𬐽𩐮𪱥𮐬𬰫👱𦰱𧐿𬑛𜑝🐽𙱮𙰿𨀹𛐠𙁻𙱏𪰹𥁯𬀹𡱲𩑡𭀹𦑥𬰹𠱯𫱬𞑎𪑣𩐧𛡳𬁬𪑴𚀹𚑛𫡥𭰠𡁡𭁥𙐶𧑽𘐹🡠𞠧𙰺𬐩𒡦𫱲𚁭𘁯𩠠𚁳𚰧𧰧𚐮𬱰𫁩𭀨𞐩𚑸𛡦𪑬𫁔𩑸𭀨𫐬𜰬𚰫𬠪𞐩`.replace(/u../g,'')))

Mar 26 2026 12:11 PM UTC

}// 140/140

Please log in (or register) to post as a new dweet (copy-paste code somewhere safe to save it meanwhile).

SupportiveOS light theme - #interactive improved spacebar handling

show FPS hide FPS share fullscreen

dee-gomma

remix of d/35096 by u/dee-gomma

function u(t) {

eval(unescape(escape`𨰮𭱩𩁴𪀽𜰶𜀊𨰮𬱴𮑬𩐮𩡩𫁴𩑲👠𪑮𭡥𬡴𚁠𒡴🱲🐰𞡳🐧𙰊𫱮𪱥𮑤𫱷𫠽𩐽🡥𛡰𬡥𭡥𫡴𡁥𩡡𭑬𭀨𭠽𩐮𪱥𮑛𜑝𛁳👶🐽𙱡𙰿𬰮𬱬𪑣𩐨𜀬𛐱𚐺𭠿𭠽🐧𫠧🱳𚰹𞡳𞡳𚱥𛡫𩑹𚐊𩡯𬠨𫐠𫱦𘀨𬰫𙱟𙰩𛡳𬁬𪑴𚀹𚐩𮀮𩡩𫁬𥁥𮁴𚀢𠰺𧁜🠢𚱭𛀲𛀫𚱲𚠹𚐠`.replace(/u../g,'')))

Mar 26 2026 12:06 PM UTC

}// 139/140

Please log in (or register) to post as a new dweet (copy-paste code somewhere safe to save it meanwhile).

MS-DOS command prompt v2 - #interactive improved spacebar handling

u/ximavus

very nice

show FPS hide FPS share fullscreen

jodoktus

remix of d/35115 by u/ximavus

function u(t) {

t?onmousemove=e=>{l=e;v.push([e.x,e.y])}:v=[]
c.width=568
for(a of v)x.lineTo(a[0]-=(a[0]-l.x)/99,a[1]-=(a[1]-l.y)/99)
x.stroke()

Mar 24 2026 9:33 PM UTC

}// 129/140

Please log in (or register) to post as a new dweet (copy-paste code somewhere safe to save it meanwhile).

u/ximavus

nice

show FPS hide FPS share 1 remix fullscreen

ximavus

function u(t) {

t?onmousemove=e=>{l=e;v.push([e.x,e.y])}:v=[]
c.width=568
for(a of v)x.lineTo(a[0]+=(a[0]-l.x)/99,a[1]+=(a[1]-l.y)/99)
x.stroke()

Mar 23 2026 3:10 PM UTC

}// 129/140

Please log in (or register) to post as a new dweet (copy-paste code somewhere safe to save it meanwhile).

Zoom drawing

u/Xen

this is sexy! :-O
u/cantelope

oooh neat

show FPS hide FPS share fullscreen

rodrigo.siqueira

remix of d/35002 by u/rodrigo.siqueira

function u(t) {

c.style.filter=`invert(1)sepia(.6`
for(a=b=t,i=4e4;i--;b-=S(b/2.4)/1.3-C(a*4+3),a=(i/b&i%2)/8-b*a/2)x.fillRect(a*1e4-1800,b*1740+4e3,.1,t<3)

Mar 23 2026 2:17 PM UTC

}// 140/140

Please log in (or register) to post as a new dweet (copy-paste code somewhere safe to save it meanwhile).

Complex organic structure

u/ximavus

#sponge

show FPS hide FPS share fullscreen

Axioplase

remix of d/35118 by u/Axioplase

function u(t) {

c.width=2e3
for(j=J=120;j--;)for(i=I=225;i--;)a=i-I/2,b=j-J/2,a*a+b*b<S(Math.atan2(b,a)*S(t)*9)*1e3+(2+S(t))*5e2?x.fillRect(i*9,j*9,9,9):0

Mar 24 2026 7:35 PM UTC

}// 138/140

Please log in (or register) to post as a new dweet (copy-paste code somewhere safe to save it meanwhile).

schlop

u/ximavus

I changed the c.width=2e3 to x.globalCompositeOperation='xor'. Epilepsy warning to anyone who tries that

show FPS hide FPS share fullscreen

ximavus

remix of d/35096 by u/dee-gomma

function u(t) {

c.width=240
c.style.filter='invert('
t?onkeydown=e=>{l=e.key;l[1]=='a'?s=s.slice(0,-1):l[1]?0:s+=l}:s=''
x.fillText('C:\\>'+s+'_',0,9)

Mar 23 2026 3:00 PM UTC

}// 134/140

Please log in (or register) to post as a new dweet (copy-paste code somewhere safe to save it meanwhile).

Uncompressed version of u/dee-gomma's MS-DOS