zxcweb

const obj = {1:222, 2:123, 5:888}; const result = Array.from({length:12},(item,index)=>(obj[index+1]?obj[index+1]:null)); console.log(result)

let arr = [3, 15, 8, 29, 102, 22]; let newArr = arr.sort((a,b)=>{ return a - b; }) console.log(newArr) 不知道你要正序还是倒叙，而且这个面试题有点简单

```js var rotate = function(nums, k) { for(var i = 0;i

看好多人写的不太对啊？贴上我的代码参考一下（用的递归） ```js let arr1 = [1,2,2,3]; let arr2 = [2,1,2]; // 创建新数组 let result = []; // 拷贝新数组待用 let arr1New = arr1.slice(); let arr2New = arr2.slice(); function mixedOfArr(){ let a1...

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总结一下吧： 1.css方法 max-width:300px;覆盖其样式； transform: scale(0.625)；按比例缩放图片； 2.js方法 document.getElementsByTagName("img")[0].setAttribute("style","width:300px!important;")