🤣21🤔14👍9🔥4🤩1
A modern, configurable, and fast template engine promising “the power of Nunjucks” and “the simplicity of EJS”. There’s an online playground if you want to see it in action.
Ben Gubler
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👍4❤2🔥2
CHALLENGE
const array = [1, 2, 3, 4, 5];
const [first, ...rest] = array;
const modified = rest.map((n, i) => i % 2 === 0 ? n * 2 : n);
console.log(first, modified);
❤9👍4
What is the output?
Anonymous Quiz
23%
1, [2, 3, 8, 5]
18%
1, [4, 6, 8]
20%
1, [4, 8]
40%
1, [4, 3, 8, 5]
👍9
CHALLENGE
const obj = { a: 1, b: 2 };
const proxy = new Proxy(obj, {
get(target, prop) {
return prop in target ? target[prop] : 0;
}
});
console.log(proxy.a, proxy.b, proxy.c);
❤11🔥3👍2
What is the output?
Anonymous Quiz
18%
undefined, 2, 0
21%
1, undefined, 0
40%
1, 2, 0
20%
1, 2, undefined
❤6
You can 'cancel' XHR and fetch requests, but can you cancel regular promises? Currently, no, but Zachary looks into doing the next best thing: telling a promise the game's up, and discarding/ignoring its eventual results.
Zachary Lee
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👍7
CHALLENGE
const array = [1, 2, 3];
array[10] = 4;
console.log(array.length);
console.log(array.includes(undefined));
👍21🤔12❤11🤣6
A slider control based visualization you can code with simple formulas. We last linked to this a few years ago, but it’s still a fun way to do some quick, visual JS math experimentation. Tixy.land is along similar lines, but based on a 2D grid.
blinry
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❤8👍4🔥1
CHALLENGE
const obj = {
a: 1,
b() {
return this.a;
}
};
const b = obj.b;
console.log(b.call({ a: 2 }));
👍20❤5🤩2
👍2
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🔥4❤3🤩3
CHALLENGE
const array = [1, 2, 3, 4, 5];
const result = array.some(n => n % 2 === 0) && array.every(n => n < 10);
console.log(result);
👍5❤4
🔥9👍5❤3
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👍14❤6🔥4
CHALLENGE
const obj1 = { a: 1, b: { c: 2 } };
const obj2 = { ...obj1 };
obj1.b.c = 3;
console.log(obj2.b.c);
👍7❤6
🤔15👍6🤩2❤1