JavaScript 實用代碼段

．提取特定的物件資料，例如

var array1 = [
{ name: 'Luna', age: 99 },
{ name: 'Baby', age: 1 },
{ name: 'Curapica', age: 18 }
];
var found = array1.find(function(element) {
  return element.name === 'Luna';
});
console.log(found);

//  > Object { name: “Luna”, age: 99 }

var array1 = [
{ name: 'Luna', age: 99 },
{ name: 'Leo', age: 1 },
{ name: 'Baby', age: 1 },
{ name: 'Curapica', age: 18 },
];
var found = array1.find(function(element) {
  return element.age === 1;
});
console.log(found);

記得它只會回一個…所以給的值要是特定的，例如 gameId

const lunaCute = [1, 2, 3];
lunaCute.map(() => []);

初始化陣列

Array.from(Array(N).keys());

把字串的逗號拿掉：（例如 1,000）

parseInt(DefaultStake.replace(/,/g, ""))

const arr = [
  {
    name: 'somestring',
    id: 42,
    fat: true,
  },
  {
    name: 'joanne',
    id: 3,
    fat: false,
    story: 'long',
  },
];
arr.reduce((a, c) => {
  const [key] = Object.entries(c);
  return a.concat(key);
}, []);

 

參考文章
13 useful JavaScript array tips and tricks you should know – DEV Community 👩‍💻👨‍💻