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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iznax

function u(t) {

c.width=1;x.fillText(x.fillStyle="Red",-9,1)

Jun 14 2020 6:13 PM UTC

}// 44/140

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#redchallenge

u/katkip

nice method!

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katkip

function u(t) {

eval(unescape(escape`𭰽𚁸𛁹𚐽🡃𚁸𛱹𛑴𚐪𤰨𮐯𮀭𭀩𒡦𫱲𚁪🐶𜀻𪠭𛐻𚑦𫱲𚁩🐱𜀷𞱩𛐭𞰩𮀮𩡩𫁬𤱴𮑬𩐽𤠨𮐽𭰨𪠭𜰰𛁩𛐵𜰩𚠲𝐵𛁹𛁹𚐬𮀮𩡩𫁬𤡥𨱴𚁩𚠱𞀬𪠪𜐸𛀱𞀬𜐸𚐠`.replace(/uD./g,''))) // boring_generic_stuff_yeah_i_know

Jun 14 2020 4:57 PM UTC

}// 140/140

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#katkweet

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lifthrasiir

function u(t) {

x[a='fillStyle']='#eff3';x[b='fillRect'](0,i=0,w=2e3,w);x[a]='#0028';for(u=i=t*800|0;i++<w+u;)x[b](i-u-99+S(i+t)*49,C(i*i)*w,60,C(i+t*9)*30)

Jun 12 2020 8:16 PM UTC

}// 140/140

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Something very fishy

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taupelink

remix of d/18964 by u/taupelink

function u(t) {

f=(h,X=960,Y=540,r=50)=>{if(r>1)x.clearRect(P=X+r*C(h)+S(t),Q=Y+r*S(h),s=r/2,s),s*=.2,x.fillRect(P+s,Q+s,s,s),f(h*1.005,P,Q,r*.998)}
f(t)

Jun 14 2020 10:04 PM UTC

}// 137/140

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d/19118

u/taupelink

resolves into something like a vortex

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geb

remix of d/5673 by u/DirtyDan

function u(t) {

p=12
a=950
b=500
c.width=a*2
for(i=1e4;i>a;i-=50)for(j=0;j<b;j+=9)
x.lineTo(a+b*S(i/a*p+C(t*2))*C(j/b*p),b+b*S(j/b*p)*S(i/a*p+t))
x.stroke()

Jun 13 2020 6:50 PM UTC

}// 140/140

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random remix

u/DaSpider

wow!

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katkip

function u(t) {

c.style.filter=`invert(6969)`,x.fillStyle=R(-420,6969,6969),x.fillRect(-69,t*1337,2*1337,69)

Jun 14 2020 5:23 PM UTC

}// 92/140

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#redchallenge

u/katkip

stupid code

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katkip

function u(t) {

x.font='7em"';x.fillText('share http://dwitter.net/d/'+(document.location+[]).split("/")[4].substr(0,5)+' pls',200+C(t)*4,400+S(t)*4)

Jun 14 2020 5:20 PM UTC

}// 133/140

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do what it says

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ttgper

remix of d/10211 by u/BalintCsala

function u(t) {

eval(unescape(escape`景爨欽椽㉥㌻椭ⴻ砮晩汬剥捴⡓⡴⤪稫㤶〫匨洽房⡫⩪簰⤪⨴㨰⤪爭猯㈬䌨琩⩺⬵㐰⭃⡭⤪爬猬房猺猯㤩⥢㵩┲㤬稽椯㤬樽⡩⽫⭴⤥ㄬ爽⡢㼱攴㨸攳⤯稬猽㙥㌯稬砮晩汬却祬攽刨愽㤹⭓⡪⨹⤪㠸ⱡⱡ⤻`.replace(/u(..)/,"$1%")))//SC

Jun 15 2020 3:25 PM UTC

}// 139/140

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ttgper

function u(t) {

<iframe width=500 height=570 frameBorder="0" src="https://www.dwitter.net/e/10211" allowFullScreen="true"></iframe>

Jun 15 2020 3:23 PM UTC

}// 115/140

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lifthrasiir

function u(t) {

x.fillRect(0,0,2e3,c.height*=.99,x.fillStyle='#800')

Jun 15 2020 2:06 PM UTC

}// 52/140

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The curtain rises

u/lifthrasiir

It should be noted that the negative width or height resets to the default (300x150) but zero is retained.