Hambley Adolph

``` var b = 10; (function b(b){ console.log(b) b = 20; console.log(b); })(b); ```

**arr1 push两个元素到arr3 然后arr2 push 1个元素到arr3。** ``` let arr1= ["A1", "A2", "B1", "B2", "C1", "C2", "D1", "D2"]; let arr2 =["A", "B", "C", "D"]; let arr3 = []; let i =0; for...

**利用const/let的块级作用域** ``` for (var i = 0; i< 10; i++){ { const j=i; setTimeout(() => { console.log(j); }, 1000) } } ``` **下面这个比较奇葩，看到大佬的cath语句块延长作用域链，就想到了with。** ``` for (var i = 0; i<...

**思路：递归比较** ``` Array.equals =function(arr1,arr2){ if (arr1.length !== arr2.length) { return false; } for (let index = 0; index < arr1.length; index++) { if (!equals(arr1[index],arr2[index])) { return false; } } return...

node版本切到7.6.0装依赖成功了，总算是跑起来了。