0x1u
0x1u
I can help on china zh-cn development
```js Object.prototype.map = function (fn) { let result = {} for (const key in this) { if (this.hasOwnProperty(key)) { const element = this[key] result = fn.call(this, key, element) } }...
```html Document let spanEl = document.querySelector('span') let inputEl = document.querySelector('input') let data = { val: null } let proxy = new Proxy(data, { get(target, p, receiver) { return Reflect.get(target, p,...
```js const toLowerUpperCase = (str = '') => { return str.split('').map(val => val === val.toUpperCase() ? val.toLowerCase() : val.toUpperCase()).join('') } console.log(toLowerUpperCase('AbC')); ```
``` https://http.cat/301 https://http.cat/302 ```
```js Number.prototype.add = function (val) { return this + val } Number.prototype.minus = function (val) { return this - val } ```
```js function print(n) { setTimeout((function () { console.log(n); return () => { } })(), Math.floor(Math.random() * 1000)); } for (var i = 0; i < 100; i++) { print(i); }...
O(∩_∩)O谢谢