utils/index,.js
/**
* 生成UUID
* @param withSeparator 是否有分割符
* @returns {string}
*/
export function generateUUID(withSeparator = true) {
let d = new Date().getTime()
if (window.performance && typeof window.performance.now === 'function') {

d += performance.now()
}
const tpl = withSeparator ? 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx' : 'xxxxxxxxxxxx4xxxyxxxxxxxxxxxxxxx'
return tpl.replace(/[xy]/g, function(c) {

const r = (d + Math.random() * 16) % 16 | 0

d = Math.floor(d / 16)

return (c === 'x' ? r : (r & 0x3 | 0x8)).toString(16)
})
}
/**
* 生成UUID
* @param withSeparator 是否有分割符
* @returns {string}
*/
export function generateUUID(withSeparator = true) {
let d = new Date().getTime()
if (window.performance && typeof window.performance.now === 'function') {

d += performance.now()
}
const tpl = withSeparator ? 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx' : 'xxxxxxxxxxxx4xxxyxxxxxxxxxxxxxxx'
return tpl.replace(/[xy]/g, function(c) {

const r = (d + Math.random() * 16) % 16 | 0

d = Math.floor(d / 16)

return (c === 'x' ? r : (r & 0x3 | 0x8)).toString(16)
})
}创建一个generate-uuid/index.js自定义指令文件
import { generateUUID } from '@/utils'
const generateUuid = {
inserted(el, binding) {

const { value } = binding

if (!value) {

const hasUUID = generateUUID(value)

el.setAttribute('data-uuid', hasUUID)

if (!hasUUID) {

el.parentNode && el.parentNode.removeChild(el)

}

}
}
}
generateUuid.install = function(Vue) {
Vue.directive('generate-uuid', generateUuid)
}

export default generateUuid
import { generateUUID } from '@/utils'
const generateUuid = {
inserted(el, binding) {

const { value } = binding

if (!value) {

const hasUUID = generateUUID(value)

el.setAttribute('data-uuid', hasUUID)

if (!hasUUID) {

el.parentNode && el.parentNode.removeChild(el)

}

}
}
}
generateUuid.install = function(Vue) {
Vue.directive('generate-uuid', generateUuid)
}

export default generateUuidmain.js引入
import GenerateUUID from '@/directive/generate-uuid'
Vue.use(GenerateUUID)
import GenerateUUID from '@/directive/generate-uuid'
Vue.use(GenerateUUID)页面使用

v-generate-uuid="false"

>

v-generate-uuid="false"

>使用uuid元素方法
const topRow = this.$refs.multipleTable

const hash = topRow.$el.dataset.uuid

const tableHeader = document.querySelector(`.el-table[data-uuid="${hash}"] .el-table__header-wrapper`)

if (tableHeader) {

tableHeader.style.width = topRow.$el.getBoundingClientRect().width + 'px'

}
const topRow = this.$refs.multipleTable

const hash = topRow.$el.dataset.uuid

const tableHeader = document.querySelector(`.el-table[data-uuid="${hash}"] .el-table__header-wrapper`)

if (tableHeader) {

tableHeader.style.width = topRow.$el.getBoundingClientRect().width + 'px'

}总结总结总结