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NotionNext/themes/next/components/WordCount.js
2022-05-24 17:01:42 +08:00

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import { useEffect } from 'react'
/**
* 字数统计
* @returns
*/
export default function WordCount() {
useEffect(() => {
countWords()
}, [])
return <div id='wordCountWrapper' className='hidden'>
<i className='mr-1 fas fa-file-word' /> 本文字数 <strong id='wordCount'>0</strong> &nbsp;|&nbsp; <i className='mr-1 fas fa-clock' /> 阅读时长 <strong id='readTime'>0</strong>
</div>
}
/**
* 更新字数统计和阅读时间
*/
function countWords() {
const articleElement = document.getElementById('notion-article')
if (articleElement) {
const articleText = deleteHtmlTag(articleElement.innerHTML)
const wordCount = fnGetCpmisWords(articleText)
// 阅读速度 300-500每分钟
document.getElementById('wordCount').innerHTML = wordCount
document.getElementById('readTime').innerHTML = Math.floor(wordCount / 400) + 1
const wordCountWrapper = document.getElementById('wordCountWrapper')
wordCountWrapper.classList.remove('hidden')
}
}
// 去除html标签
function deleteHtmlTag(str) {
str = str.replace(/<[^>]+>|&[^>]+;/g, '').trim()// 去掉所有的html标签和&nbsp;之类的特殊符合
return str
}
// 用word方式计算正文字数
function fnGetCpmisWords(str) {
let sLen = 0
try {
// eslint-disable-next-line no-irregular-whitespace
str = str.replace(/(\r\n+|\s+| +)/g, '龘')
// eslint-disable-next-line no-control-regex
str = str.replace(/[\x00-\xff]/g, 'm')
str = str.replace(/m+/g, '*')
str = str.replace(/龘+/g, '')
sLen = str.length
} catch (e) {
}
return sLen
}