mx-rk-quyenl

const arrays = [[10], 50, [100, [2000, 3000, [40000]]]];
arrays.flat(Infinity);

// results:
// [ 10, 50, 100, 2000, 3000, 40000 ]

mx-rk-quyenl

正規表現メモ

項目	表記
改行を検索	\n
タブ文字を検索	\t
半角カナを検索	[ｱ-ﾝｧ-ｮｯｰﾟﾞ･]
全角ひらがなを検索	[あ-んが-ぼぁ-ょゎっー]
全角カタカナを検索	[ア-ンガ-ボァ-ョヮッー]
半角英字を検索	[a-zA-Z]

mx-rk-quyenl

Number.prototype.pad = function(size) {
  var s = String(this);
  while (s.length < (size || 2)) {s = "0" + s;}
  return s;
}

(1).pad(3) // => "001"
(10).pad(3) // => "010"
(100).pad(3) // => "100"

mx-rk-quyenl

// source: http://stackoverflow.com/questions/16491758/remove-objects-from-array-by-object-property

// we have an array of objects, we want to remove one object using only the id property
var apps = [{id:34,name:'My App',another:'thing'},{id:37,name:'My New App',another:'things'}];

// get index of object with id:37
var removeIndex = apps.map(function(item) { return item.id; }).indexOf(37);

// remove object
apps.splice(removeIndex, 1);

mx-rk-quyenl

People

:bowtie:	😄 :smile:	😆 :laughing:
😊 :blush:	😃 :smiley:	☺️ :relaxed:
😏 :smirk:	😍 :heart_eyes:	😘 :kissing_heart:
😚 :kissing_closed_eyes:	😳 :flushed:	😌 :relieved:
😆 :satisfied:	😁 :grin:	😉 :wink:
😜 :stuck_out_tongue_winking_eye:	😝 :stuck_out_tongue_closed_eyes:	😀 :grinning:
😗 :kissing:	😙 :kissing_smiling_eyes:	😛 :stuck_out_tongue:

mx-rk-quyenl

function getTextWidth(txt) {
    let $elm = $('<span class="tempforSize">'+txt+'</span>').prependTo('body');
    let elmWidth = $elm.width();
    $elm.remove();
    return elmWidth;
}
function centerSelect($elm) {
    const optionWidth = getTextWidth($elm.children(':selected').html());
    const emptySpace = $elm.width() - optionWidth;
    $elm.css('text-indent', (emptySpace/2));

mx-rk-quyenl

axios({
  url: 'http://localhost:5000/static/example.pdf',
  method: 'GET',
  responseType: 'blob', // important
}).then((response) => {
  const url = window.URL.createObjectURL(new Blob([response.data]));
  const link = document.createElement('a');
  link.href = url;
  link.setAttribute('download', 'file.pdf');
  document.body.appendChild(link);

mx-rk-quyenl

let DECIMAL_SEPARATOR = '.'
let asInteger = (number) => {
  number = String(number)
  // var value, exp, tokens = number.split(DECIMAL_SEPARATOR), integer = tokens[0], fractional = tokens[1];
  let value = number.split(DECIMAL_SEPARATOR)
  let exp = value
  let tokens = value
  let integer = tokens[0]
  let fractional = tokens[1]

mx-rk-quyenl

// Classification is adopted eight regional division
var regions = [
  {id:1, name:"北海道", kana:"ホッカイドウ", en:"hokkaido", neighbor:[2]},
  {id:2, name:"東北",   kana:"トウホク",     en:"tohoku",   neighbor:[1]},
  {id:3, name:"関東",   kana:"カントウ",     en:"kanto",    neighbor:[2, 4]},
  {id:4, name:"中部",   kana:"チュウブ",     en:"chubu",    neighbor:[2, 3, 5]},
  {id:5, name:"近畿",   kana:"キンキ",       en:"kinki",    neighbor:[4, 6, 7]},
  {id:6, name:"中国",   kana:"チュウゴク",   en:"chugoku",  neighbor:[5, 7, 8]},
  {id:7, name:"四国",   kana:"シコク",       en:"shikoku",  neighbor:[5, 6, 8]},
  {id:8, name:"九州",   kana:"キュウシュウ", en:"kyusyu",   neighbor:[6, 7]}

mx-rk-quyenl

//  FUN METHOD
/**
 * Remove duplicates from an array of objects in javascript
 * @param arr - Array of objects
 * @param prop - Property of each object to compare
 * @returns {Array}
 */
function removeDuplicates( arr, prop ) {
  let obj = {};
  return Object.keys(arr.reduce((prev, next) => {