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题解 | #表格排序#

function sort(type, order) { let index = { id: 0, price: 1, sales: 2 }[type]; let rows = Array.from(jsList.rows) if (order == 'asc') { row...

2023-01-11

0 323

题解 | #倒计时#

function second(second) { return { day: parseInt(second / (3600 * 24)), hour: parseInt(second % (3600 * 24) / 3600), min: parseInt(second % (3600...

2023-01-10

0 409

题解 | #购物车#

function add(items) { let tbody = jsTrolley.querySelector('tbody') items.forEach(item => tbody.insertAdjacentHTML('beforeend', `<tr><t...

2023-01-10

0 347

题解 | #获取指定字符串#

function captureThreeNumbers(str) { let result = str.match(/\d{3}/) return result ? result[0] : false }

2023-01-10

0 288

题解 | #邮箱字符串判断#

function isAvailableEmail(sEmail) { let reg = /^[a-zA-Z\d_.-]*[a-zA-Z\d_-]@[a-zA-Z\d-]+(\.[a-zA-Z\d-]+)*\.[a-zA-Z\d]{2,6}$/ return reg.tes...

2023-01-10

0 336

题解 | #虚拟DOM#

const _createElm = vnode => { // 1.对于一个对象，如果tag属性不为undefined，则创建标签元素 // 2.如果children属性不为空数组，则递归调用_createElm函数创建元素 // 3.返回元素对象 // 4.如果tag属性为...

2023-01-09

0 307

题解 | #双向绑定#

Object.keys(person).forEach(prop => { let oldValue = person[prop] Object.defineProperty(person, prop, { get() { return oldValue }, set(va...

2023-01-09

0 345

题解 | #购物面板#

zjtaiduola.onclick = reduceNum zjtaishaola.onclick = addNum kltaiduola.onclick = reduceNum kltaishaola.onclick = addNum function reduceNum(event) { ...

2023-01-09

1 353

题解 | #监听对象#

Object.keys(person).forEach(prop => { Object.defineProperty(person, prop, { get() { return oldValue }, set(value) { perso...

2023-01-09

0 283

题解 | #Proxy拦截器#

const _proxy = (object, ...prototypes) => { return new Proxy(object, { get(target, prop, receiver) { return prototypes.includes(prop) ? 'no...

2023-01-09

0 289