xiongchenfeng

leetcode提交，算法耗时190ms ```javascript /** * @param {number[]} nums1 * @param {number[]} nums2 * @return {number} */ var findMedianSortedArrays = function(nums1, nums2) { let num = nums1.concat(nums2); num = num.sort((a, b) =>...

```js document.body.addEventListener('click', function(e) { let container = document.querySelector('#container'); let compareImg = document.querySelector('#compareImg'); let imgsInContainer = container.querySelectorAll('img'); // 第2题 let isImgDom = e.target.tagName === 'IMG'; let target = e.target; // 第1题...

> ```js > document.addEventListener('click', e => { > // 第一题 > const isChild = document.querySelector('#container').contains(e.target) > // 第二题 > const isImg = e.target.nodeName === 'IMG' > // 第三题 > if...

第一题：（Throttle是一个节流函数） ```javascript (function() { let backTop = document.getElementById('backTop'), scrollTop = 0, windowHeight = window.innerHeight || document.documentElement.clientHeight; let scroll = Throttle((e) => { scrollTop = document.documentElement.scrollTop || window.pageYOffset || document.body.scrollTop; if...

[demo](https://codepen.io/xiongchenf/pen/XLpJxg) ```javascript (function() { // 1 const div = document.createElement('div'); div.style.width = "150px"; div.style.height = "300px"; div.style.border = "1px solid #333"; document.body.appendChild(div); // 2 div.style.background = "linear-gradient(to bottom right, red,...