JavaScript Iterate

array-apply.js

#!/usr/bin/env node

Array.apply(null, { length: 10 }).forEach((_, i) => {
  console.log(i);
});

array-fill-times.js

#!/usr/bin/env node

let times = (n) => {
  return (f) => {
    Array(n)
      .fill()
      .map((_, i) => f(i));
  };
};

let log = (i) => {
  console.log(i);
};

times(10)(log);

array-fill.js

#!/usr/bin/env node

Array(10)
  .fill()
  .map((_, i) => {
    console.log(i);
  });

array-from-iterate.js

#!/usr/bin/env node

Array.from(Array(10), (_, i) => console.log(i));

array-from.js

#!/usr/bin/env node

Array.from(Array(10)).map((_, i) => {
  console.log(i);
});

array-keys.js

#!/usr/bin/env node

for (let i of Array(10).keys()) {
  console.log(i);
}

do-while.js

#!/usr/bin/env node

let i = 0
do {
  console.log(i)
  i++
} while (i < 10)

for-of.js

#!/usr/bin/env node

for (let i of [0, 1, 2, 3, 4, 5, 6, 7, 9]) {
  console.log(i);
}

for-yield.js

#!/usr/bin/env node

function* times(x) {
  for (let x = 0; x < 10; x++) {
    yield x;
  }
}

for (let i of times(10)) {
  console.log(i);
}

for.js

#!/usr/bin/env node

for (let i = 0; i < 10; i++) {
  console.log(i);
}

jquery.js

#!/usr/bin/env node

const jsdom = require('jsdom');
const { JSDOM } = jsdom;
const dom = new JSDOM(``);
const { document } = dom.window;
const jquery = require('jquery');
const $ = jquery(dom.window);

$.each(Array(10), i => {
  console.log(i)
})

lodash.js

#!/usr/bin/env node

let _ = require("lodash")

_.times(10, i => {
  console.log(i)
});

loop-decrement.js

#!/usr/bin/env node

const times = (x) => (f) => {
  if (x > 0) {
    f();
    times(x - 1)(f);
  }
};

let i = 0;
times(10)(() => {
  console.log(i);
  i++;
});

loop-increment.js

#!/usr/bin/env node

const times = (n) => (f) => {
  let iter = (i) => {
    if (i === n) return;
    f(i);
    iter(i + 1);
  };
  return iter(0);
};

times(10)((i) => {
  console.log(i);
});

number-prototype.js

#!/usr/bin/env node

Number.prototype.times = function (f) {
  return Array(this.valueOf())
    .fill()
    .map((_, i) => f(i));
};

(10).times((i) => console.log(i));

package.json

{
  "name": "js-iterate", 
  "version": "1.0.0", 
  "bin": {
    "array-apply": "./array-apply.js",
    "lodash": "./lodash.js",
    "underscore": "./underscore.js",
    "spread-operator-foreach": "./spread-operator-foreach.js"
  },
   "dependencies": {
    "jsdom": "^16.2.2",
    "jquery": "^3.5.0",
    "lodash": "^4.17.15",
    "underscore": "^1.10.2"
  }
}

spread-operator-foreach.js

#!/usr/bin/env node

[...Array(10)].forEach((_, i) => {
  console.log(i);
});

spread-operator-map.js

#!/usr/bin/env node

[...Array(10)].map((_, i) => {
  console.log(i);
});

underscore.js

#!/usr/bin/env node

let _ = require("underscore")

_.times(10, i => {
  console.log(i)
})

while.js

#!/usr/bin/env node

let i = 0
while (i < 10) {
  console.log(i)
  i++
}