Snippet Zone

Alphabet Array Golfed

```
l=[]
```
```
for(i=26;i--;)l[i]=(10+i).toString(36)
```
```
console.log(l)
```

A nasty golfed way to fill an array with letters a-z.

I usually do (as seen in another post):

let letters = 'abcdefghijklmopqrstuvwxyz'.split``

January 25, 2022

// codegolf // javascript // speedcoding // strings

Bat Signal

document.body.innerHTML = '<pre>'+`n2zh2

```
f8l2b2l8
```
```
b8pep8
```
```
7cpepc
```
```
5ijiji
```
```
3yyq
```
```
0
```
```
0
```
```
0
```
```
3yyq
```
```
5afy8fa
```
```
98f69a96f8
```

f4f2d6d2f4`.replace(/./g,c=>'* '[(n=parseInt(c,36))&1].repeat(n/2||49))

           *                         *
       ****          *     *          ****
     ****            *******            ****
   ******            *******            ******
  *********         *********         *********
 ***********************************************
*************************************************
*************************************************
*************************************************
 ***********************************************
  *****       *********************       *****
    ****       ***    *****    ***       ****
       **       *      ***      *       **

Fun js codegolf answer from user arnauld… Whole thread is very fun…

January 15, 2022

// codegolf // javascript // strings

Speed Coded Mouse Toy

```
d = document
```
```
b = d.body
```
```
b.style.margin = 0
```
```
with (b.appendChild(
```

  Object.assign(d.createElement`canvas`, {

```
    width: innerWidth,
```
```
    height: innerHeight,
```
```
  })
```
```
).getContext`2d`) {
```
```
  mx = 0
```
```
  my = 0
```
```
 
```
```
  onresize = _ => {
```
```
    canvas.width = innerWidth
```
```
    canvas.height = innerHeight
```
```
  }
```
```
 
```
```
  onpointermove = e => {
```
```
    mx = e.clientX, 
```
```
    my = e.clientY
```
```
  }
```
```
 
```
```
  r = 0
```
```
  loop = () => {
```
```
    save()
```

    globalCompositeOperation = 'hard-light'

    translate(innerWidth / 2, innerHeight / 2)

```
 
```
```
    rotate(r += .02)
```

    translate(-innerWidth / 2, -innerHeight / 2)

```
 
```
```
    fillStyle = 'rgba(55, 55, 55, .01)'
```

    fillRect(0, 0, innerWidth, innerHeight)

```
 
```

    fillStyle = 'rgba(116, 196, 221, .02)'

```
    fillRect(0, my, innerWidth, 20);
```
```
 
```

    fillStyle = 'rgba(255, 255, 255, .02)'

```
    fillRect(mx, 0, 20, innerHeight);
```
```
 
```
```
    fillStyle = 'rgba(0, 0, 0, .03)'
```

    fillRect(0, innerHeight - my, innerWidth, 20);

```
 
```

    fillStyle = 'rgba(116, 196, 221, .02)'

    fillRect(innerWidth - mx, 0, 20, innerHeight);

```
    restore()
```
```
    requestAnimationFrame(loop)
```
```
  }
```
```
  loop()
```
```
}
```

Speed coded mouse toy…

December 30, 2021

// canvas // codegolf // globals // graphics // hacks // speedcoding

Shorthand Primitives Golfing

```
!0 // true
```
```
 
```
```
!1 // false
```
```
 
```
```
1/0 // Infinity
```
```
 
```
```
0[0] // undefined (any digit works)
```

This is from user Isiah Meadows on the codegolf stackexchange…

December 27, 2021

// codegolf // javascript // speedcoding

valueOf for Shorter Function Calls

```
r={valueOf:_=>Math.random()}
```
```
console.log(+r)
```
```
console.log(+r)
```
```
console.log(+r)
```

Use valueOf to shorten function calls. I learned this trick over at stackexchange codegolf here from user cyoce.

December 11, 2021

// codegolf // javascript // math // random

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