beary
beary
``` javascript function before(num, fn) { let cnt = 0; let ans; return function (...args) { if (num > cnt) { ans = fn(...args); } cnt++; return ans; }; }...
``` javascript function ShortenStr(str) { const stk = []; let cnt = 0; let res = ""; for (let i = 0; i < str.length; i++) { if (stk.length ==...
``` javascript function extandStr(str) { let num = ""; let res = ""; let curStr = ""; for (let i = 0; i < str.length; i++) { if (str[i] >=...
``` javascript function count(str){ let res = 0; for(let i = 0; i < str.length; i++){ if(str[i] >= 'a' && str[i] = 'A' && str[i]
``` javascript Number.prototype.add = function(num) { return this + (+num); } Number.prototype.minus = function(num){ return this - (+num); } console.log((5).add(3).minus(2)); ```
``` let A = (function(){ let idx = 0; return function(){ idx++; if(idx % 2 === 1) console.log(1); else console.log(2); } })() A(); A(); A(); ``` 闭包应用