replacing `x.fillText([...'🚛🚑🚒🚚🚐🚙🚕🚗🚓'][… by DaSpider

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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DaSpider

remix of d/17902 by u/BriSeven

function u(t) {

c.width=700
for(i=8;i--;){
x.font=i+'em a'
x.fillText(['🚛','🚑','🚒','🚚','🚐','🚙','🚕','🚗','🚓'][i+(_=~~(t/2))%3],620-(i/2*t*512&1023),10*i**2)
}

Mar 12 2020 8:27 PM UTC

}// 140/140

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replacing x.fillText([...'🚛🚑🚒🚚🚐🚙🚕🚗🚓'][i+(_=~~(t/2))%3],620-(i/2*t*512&1023),10*i**2) saves a few chars


      u(t) is called 60 times per second.
      t: elapsed time in seconds.
      c: A 1920x1080 canvas.
      x: A 2D context for that canvas.
      S: Math.sin
      C: Math.cos
      T: Math.tan
      R: Generates rgba-strings, ex.: R(255, 255, 255, 0.5)

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