css 文件重复类样式删除

上传文件进行无关 className 删除

<div style="display: flex;"><input type="file" @change="handleFileUpload" /><el-button @click="removeStyles" :disabled="!fileContent">Remove Styles and Download</el-button>
</div>

 handleFileUpload(event) {console.log(event)const file = event.target.files[0]if (file) {const reader = new FileReader()reader.onload = e => {this.fileContent = e.target.result}reader.readAsText(file)}},removeStyles() {if (!this.fileContent) {return}let modifiedContent = this.fileContentthis.allClassData.forEach(className => {const regex = new RegExp(`\\.${className}\\s*{[^}]*}`, 'g')modifiedContent = modifiedContent.replace(regex, '')})const blob = new Blob([modifiedContent], { type: 'text/css' })const link = document.createElement('a')link.href = URL.createObjectURL(blob)link.download = 'text2.scss'document.body.appendChild(link)link.click()document.body.removeChild(link)}

在这里插入图片描述

获取页面所有className

let allClassNames = getAllClassNames().sort()
this.allClassData = allClassNames
console.log('店铺分析', allClassNames)

export function getAllClassNames() {let classNames = new Set()function extractClassNames(element) {element.classList.forEach(className => {classNames.add(className)})Array.from(element.children).forEach(child => {extractClassNames(child)})}extractClassNames(document.body)return Array.from(classNames)
}