##例子：读取歌词文件显示 [JavaScript RegExp 对象](http://www.w3school.com.cn/jsref/jsref_obj_regexp.asp) 歌词文件:传奇.lrc ``` [ti:传奇] [ar:李健] [al:李春天的春天] [offset:0] [00:01.50]传奇－－李键 [00:04.63]词：左右 曲：李键 [00:08.81] [00:35.45]是只因为在人群中多看了你一眼 [00:42.95]再也没能忘掉你容颜 [00:50.54]梦想着偶然能有一天再相见 [00:57.77]从此我开始孤单思念 [01:04.75]想你时你在天边 [01:11.98]想你时你在眼前 [01:19.72]想你时你在脑海 [01:27.02]想你时你在心田 [01:35.47]宁愿相信我们前世有约 [01:41.76]今生的爱情故事不会再改变 [01:50.37]宁愿用这一生等你发现 [01:56.80]我一直在你身旁 [01:59.48]从未走远 [02:38.17]只是因为在人群中多看了你一眼 [02:45.53]再也没能忘掉你容颜 [02:53.08]梦想着偶然能有一天再相见 [03:00.58]从此我开始孤单思念 [03:07.57]想你时你在天边 [03:14.92]想你时你在眼前 [03:22.55]想你时你在脑海 [03:29.91]想你时你在心田 [03:38.13]宁愿相信我们前世有约 [03:44.25]今生的爱情故事不会再改变 [03:53.00]宁愿用这一生等你发现 [03:59.44]我一直在你身旁 [04:01.94]从未走远 [04:08.30]宁愿相信我们前世有约 [04:14.41]今生的爱情故事不会再改变 [04:23.27]宁愿用这一生等你发现 [04:29.39]我一直在你身旁 [04:31.95]从未走远 [04:38.16]只是因为在人群中多看了你一眼 [04:47.01] 歌词来源:www.lrcxz.com ``` index.js ```js // readline实现一行一行读取歌词 const fs = require('fs'); const path = require('path'); const iconv = require('iconv-lite'); const readline = require('readline'); var readStream = fs.createReadStream(path.join(__dirname, './传奇.lrc')).pipe(iconv.decodeStream('gbk')); var rl = readline.createInterface({ input: readStream }); var regex = /\[(\d{2}):(\d{2})\.(\d+)\](.+)/; rl.on('line', function(line) { var time = regex.exec(line); if (time) { var m = parseInt(time[1]); var s = parseInt(time[2]); var ms = parseInt(time[3]); var all = m * 60 * 1000 + s * 1000 + ms; setTimeout(function() { console.log(time[4]); }, all); } else { console.log(line); } }); ; ```