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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KilledByAPixel

remix of d/27036 by u/KilledByAPixel

function u(t) {

t?x.fillRect(A,B,Z,Z):(X=Y=540,V=3,W=2,Z=32,F=_=>u[G=(A=X>>5)+(B=Y>>5)*Z]?1:u[G]=-1)
X+=V*=F(X+=V)
Y+=W*=F(Y+=W)
x.clearRect(A*=Z,B*=Z,Z,Z)

Feb 12 2023 9:55 PM UTC

}// 139/140

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lo-fi breakout

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shubshub

function u(t) {

c.width=1920;x.lineWidth=2;x.strokeStyle=R(0,0,0,0.5);for(i=0;i<400;i++)x.strokeRect(i*5,S(t/1-i)*1080,1,10)

Feb 15 2023 10:14 AM UTC

}// 109/140

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The Rains Fall down in GPT

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xyper

function u(t) {

a=(S(t*143)+1)*950;b=(C(t*252)+1)*520;d=(C(t*389)+1)*90;e=(C(t*312)+1)*90;x.fillStyle=R(a/10,b/10,d,255);x.fillRect(a,b,d,e)

Feb 15 2023 8:59 AM UTC

}// 125/140

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little thing i made

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lewdev

remix of d/23822 by u/lewdev

function u(t) {

onkeyup=e=>document.body.innerHTML=["key","keyCode","code"].map(k=>"<h1>"+k+": "+e[k]+"</h1>").join``

Feb 14 2023 12:38 AM UTC

}// 101/140

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Show Key Codes (101 characters)

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taupelink

remix of d/27032 by u/taupelink

function u(t) {

eval(unescape(escape`󬬽󣝡󭍨󛭲󨝮󩍯󫜻󩭯󬬨󪜽󜝥󝌻󪜭󛜻󮌮󩭩󫍬󤭥󨽴󚌱󜬰󚭘󛌱󜬰󚭙󛌱󛌱󚜩󦌽󬬨󦜽󬬨󚜪󞜩󚬱󝬬󩼽󦜦󜬰󚽘󛼵󙜸󛍨󟝘󙬫󚽧󛍸󛭦󪝬󫍓󭍹󫍥󟝛󙼣󜬴󝼧󛌧󘼱󝬹󙼬󙼣󡍁󞌧󛌧󘼵󝍂󙽝󦼨󚍘󛽧󙜨󞜭󚼫󪌥󝝼󜌩󛜳󚜪󚬲󚼨󦜯󪌥󚌱󞌭󩼥󞝼󪌥󜬩󛼲󛜹󚜪󚬲󚜪󚬮󝜦󜽝`.replace(/u../g,'')))

Feb 12 2023 5:37 PM UTC

}// 139/140

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d/27041

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deobfuscate

function u(t) {

function e(){return Math.random()*255}
function f(){return Math.random()*1920}
x.fillStyle=R(e(),e(),e())
x.fillRect(f(),f(),f()/500,e())

Feb 14 2023 5:19 PM UTC

}// 137/140

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u/joeytwiddle

To make some space: R=Math.random,e=()=>R()*255,f=()=>R()*1920

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KilledByAPixel

remix of d/22668 by u/KilledByAPixel

function u(t) {

for(i=Z=64;i--;x.clearRect(X+=A*=F(X+=A),Y+=B*=F(Y+=B),3,3))F=_=>u[G=(U=X>>6)+(V=Y>>6)*Z]?1:u[x.fillRect(U*Z,V*Z,Z,Z),G]=-1}{X=Y=540,A=3,B=2

Feb 11 2023 11:52 PM UTC

}// 140/140

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Break Out Of The Dweet

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lonestar108

remix of d/27045 by u/lonestar108

function u(t) {

eval(unescape(escape`景爨爽㌭琬刽㠮㔬椽〻椼ㄷ⭴㭩⬽㌩笊†砮晩汬却祬攽恨獬⠤筩⩩紬㤹┬㐹┬⸰ㄩ怊†砮晩汬剥捴⠹㔰⬵㔪⡒⭲⩃⡩⩴⤩⩓⡩⵴⤬㤰〫㌵⨨别爪䌨椩⤪䌨椩Ⱘ朽ㄸ〭琩Ⱨ⤊素`.replace(/u([^D].)/g,'$1%')))

Feb 13 2023 7:09 AM UTC

}// 127/140

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Sunset Waters

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bogdanov

function u(t) {

w=c.width|=0
if(!t)v=z=g=0,f=30
v+=f
z+=g
g+=1
if(v<0||v>w)f*=-1
if(z>999)g*=-.9
x.fillRect(v,z,9,9)

Feb 11 2023 9:29 PM UTC

}// 101/140

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This is my ball

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Xen

remix of d/27055 by u/Xen

function u(t) {

//photosensitive warning cancelling slash thingy
//remove 2 watch
//dwitter is learning and also fun
//x.fillRect(c.width=C(t*=t)*t,0,t*t,t)

Feb 14 2023 2:24 AM UTC

}// 140/140

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also 37bytes for seizure/rave? thats either a party or hospital and deserves double awesomenesses

u/joeytwiddle

I feel like one day one of Xen's dweets is going to break the canvas, crash the browser, crack the screen, and cause an earthquake