先看下效果
github上做的一个音乐播放器: https://github.com/SorrowX/electron-music
中文歌曲
英文歌曲(如果有翻译的中文给回返回出去)
韩文歌曲
来看下解析歌词的类
class Lyric { constructor(data) { this.data = data this.lrc = data['lrc']['lyric'] this.tlyric = data['tlyric']['lyric'] this.lrcMap = this.getLyricMap(this.lrc) this.finalLrcMap = this.convertProp(Object.assign({}, this.lrcMap)) this.tlyricMap = this.getLyricMap(this.tlyric) this.finalTlyricMap = this.convertProp(Object.assign({}, this.tlyricMap)) } getLyricMap(lrc) { let key, value, sIdx, eIdx, nsIdx let ret = {} if (!lrc || (typeof lrc !== 'string')) return ret while(lrc) { sIdx = lrc.indexOf('[') eIdx = lrc.indexOf(']') + 1 if (sIdx !== -1 && eIdx !== -1) { key = lrc.slice(sIdx, eIdx) advance(eIdx) nsIdx = lrc.indexOf('[') value = lrc.slice(0, nsIdx) ret[key] = value.trim() advance(nsIdx) } else { break } } function advance (n) { lrc = lrc.substring(n) } return ret } convertProp(obj) { Object.keys(obj).forEach((str) => { if (!obj[str]) { delete obj[str] } else { let prop = f(str) obj[prop] = obj[str] delete obj[str] } }) function f(str) { str = str.match(/^[(d+):(d+).(d+)/) return Number(str[1]) * 60 * 1000 + Number(str[2]) * 1000 + Number(str[3]) } return obj } getCurPlayLyric(audioCurTime) { let audioCurTimeMs = audioCurTime * 1000 let arrTime = Object.keys(this.finalLrcMap) let i = 0, len = arrTime.length, idx let hasTranslate = Object.keys(this.finalTlyricMap).length > 0 if (audioCurTimeMs === 0) { return g.call(this, arrTime[0]) } if (audioCurTimeMs >= Number(arrTime[len - 1])) { return g.call(this, arrTime[len - 1]) } for (; i < len; i++) { if ( audioCurTimeMs >= Number(arrTime[i - 1]) && audioCurTimeMs < Number(arrTime[i]) ) { idx = i - 1 break } } return g.call(this, arrTime[idx]) function g(prop) { return hasTranslate ? v(this.finalLrcMap[prop]) + (' ') + v(this.finalTlyricMap[prop]) : v(this.finalLrcMap[prop]) } function v(val) { return typeof val === 'undefined' ? '' : val } } }
使用姿势超级简单
new Lyric(data)
data就是歌词文件中的对象
使用实例 getCurPlayLyric 方法就ok，参数为 audio.currentTime 单位秒 时间
看下完整demo
let arrData = [ { "sgc":false, "sfy":false, "qfy":false, "path": "D:\SorrowX\2018\xhl-live-01\trunk\web-page\歌词\十年.mp3", "name": "十年", "lrc":{ "version":4, "lyric":`[00:00.00] 作曲 : 陈小霞 [00:01.00] 作词 : 林夕 [00:03.700]编曲：唐汉霄 [00:08.910]男： [00:09.650] [00:10.590]十年之后 [00:12.510] [00:13.020]我们是朋友还可以问候 [00:17.800]只是那种温柔 [00:20.840]再也找不到拥抱的理由 [00:25.560]情人最后难免沦为朋友 [00:34.870] [00:48.850]女： [00:49.330] [00:50.730]如果那两个字没有颤抖 [00:54.990]我不会发现我难受 [00:58.660]怎么说出口 [01:00.630] [01:02.880]也不过是分手 [01:04.920] [01:07.390]男： [01:08.040]如果对于明天没有要求 [01:11.710] [01:12.350]牵牵手就像旅游 [01:15.530]成千上万个门口 [01:17.990] [01:19.920]总有一个人要先走 [01:22.880] [01:24.240]女： [01:24.720] [01:26.400]怀抱既然不能逗留 [01:30.050]何不在离开的时候 [01:33.280]一边享受一边泪流 [01:40.470] [01:41.300]十年之前 [01:43.530]我不认识你你不属于我 [01:47.670]我们还是一样 [01:50.400]陪在一个陌生人左右 [01:54.660]走过渐渐熟悉的街头 [01:58.130]男： [01:58.480]十年之后 [02:00.650]我们是朋友还可以问候 [02:04.810]只是那种温柔 [02:07.500]再也找不到拥抱的理由 [02:11.710]情人最后难免沦为朋友 [02:18.500] [02:37.240]怀抱既然不能逗留 [02:40.870]何不在离开的时候 [02:43.700]合： [02:43.900]一边享受一边泪流 [02:51.140] [02:52.000]十年之前 [02:54.170]我不认识你你不属于我 [02:58.430]我们还是一样 [03:01.100]陪在一个陌生人左右 [03:04.520]男： [03:05.330]走过渐渐熟悉的街头 [03:09.070]十年之后 [03:11.010]合： [03:11.430]我们是朋友还可以问候 [03:15.580]只是那种温柔 [03:17.860]男： [03:18.320]再也找不到拥抱的理由 [03:22.600]情人最后难免沦为 [03:26.670]合： [03:27.180]朋友 [03:30.050]男： [03:30.550] [03:31.320]直到和你做了多年朋友 [03:35.870]才明白我的眼泪 [03:39.170]不是为你而流 [03:41.500] [03:43.500]也为别人而流 ` }, "tlyric":{ "version":0, "lyric":null }, "code":200 }, { "sgc":true, "sfy":true, "qfy":false, "path": "D:\SorrowX\2018\xhl-live-01\trunk\web-page\歌词\Buttons-The Pussycat Dolls-b.mp3", "name": "Buttons-The Pussycat Dolls-b", "transUser":{ "id":19538200, "status":0, "demand":1, "userid":52624747, "nickname":"000落雪0", "uptime":1431834889776 }, "lrc":{ "version":13, "lyric":`[00:00.00] 作曲 : Nicole Scherzinger & Sean Garrett & Jamal Jones & Jason Perry [00:19.530]I'm telling you loosen up my buttons baby (Uh huh) [00:22.840]But you keep fronting (Uh) [00:24.540]Saying what you going to do to me (Uh huh) [00:27.010]But I ain't seen nothing (Uh) [00:28.930]I'm telling you loosen up my buttons baby (Uh huh) [00:31.190]But you keep fronting (Uh) [00:33.500]Saying what you going to do to me (Uh huh) [00:35.780]But I ain't seen nothing (Uh) [00:39.740]Typical [00:40.400]Hardly the type I fall for [00:42.070]I'm liking the physical [00:44.120]Don't leave me asking for more [00:45.640]I'm a sexy mama (Mama) [00:48.070]Who knows just how to get what I want and (Want and) [00:50.730]What I want to do is spring this on you (On you) [00:52.990]Back up all of the things that I told you (Told you) [00:56.780]You been saying all the right things all along [01:00.450]But I can't seem to get you over here to help take this off [01:04.950]Baby, can't you see? [01:06.870]How these clothes are fitting on me [01:09.090]And the heat coming from this beat [01:11.370]I'm about to blow [01:13.230]I don't think you know [01:14.700]I'm telling you loosen up my buttons baby (Uh huh) [01:17.020]But you keep fronting (Uh) [01:19.240]Saying what you going to do to me (Uh huh) [01:22.020]But I ain't seen nothing (Uh) [01:24.180]I'm telling you loosen up my buttons baby (Uh huh) [01:26.400]But you keep fronting (Uh) [01:28.480]Saying what you going to do to me (Uh huh) [01:31.000]But I ain't seen nothing (Uh) [01:33.430]You say you're a big boy [01:35.560]But I can't agree [01:37.730]'Cause the love you said you had [01:40.090]Ain't been put on me [01:41.910]I wonder [01:43.250]If I'm just too much for you [01:44.650]Wonder [01:45.520]If my kiss don't make you just [01:46.480]Wonder [01:47.570]What I got next for you [01:48.840]What you want to do? (Do) [01:51.930]Take a chance to recognize that this could be yours [01:53.710]I can see, just like most guys that your game don't please [01:59.890]Baby, can't you see? [02:01.260]How these clothes are fitting on me [02:03.240]And the heat coming from this beat [02:05.750]I'm about to blow [02:07.360]I don't think you know [02:08.880]I'm telling you loosen up my buttons baby (Uh huh) [02:11.290]But you keep fronting (Uh) [02:13.590]Saying what you going to do to me (Uh huh) [02:15.560]But I ain't seen nothing (Uh) [02:18.100]I'm telling you loosen up my buttons baby (Uh huh) [02:20.370]But you keep fronting (Uh) [02:22.690]Saying what you going to do to me (Uh huh) [02:25.180]But I ain't seen nothing (Uh) [02:46.750]I'm a make you loosen up my buttons babe [02:47.960]Loosen up my buttons babe [02:49.980]Why don't you loosen up my buttons babe [02:52.000]Loosen up my buttons babe [02:54.310]I'm a make you loosen up my buttons babe [02:56.690]Loosen up my buttons babe [02:58.750]Why don't you loosen up my buttons babe [03:01.170]Loosen up my buttons babe [03:03.200]I'm telling you loosen up my buttons baby (Uh huh) [03:05.660]But you keep fronting (Uh) [03:07.980]Saying what you going to do to me (Uh huh) [03:10.070]But I ain't seen nothing (Uh) [03:12.230]I'm telling you loosen up my buttons baby (Uh huh) [03:14.460]But you keep fronting (Uh) [03:16.990]Saying what you going to do to me (Uh huh) [03:19.210]But I ain't seen nothing (Uh) [03:21.480]I'm telling you loosen up my buttons baby (Uh huh) [03:24.290]But you keep fronting (Uh) [03:26.240]Saying what you going to do to me (Uh huh) [03:28.390]But I ain't seen nothing (Uh) [03:30.500]I'm telling you loosen up my buttons baby (Uh huh) [03:32.750]But you keep fronting (Uh) [03:35.100]Saying what you going to do to me (Uh huh) [03:37.730]But I ain't seen nothing (Uh) ` }, "tlyric":{ "version":1, "lyric":`[by:000落雪0] [00:19.530]我让你松开我的纽扣 宝贝 [00:22.840]但是你站在我面前 [00:24.540]问我 你将对我做些什么 [00:27.010]但是我什么也没说 [00:28.930]我让你你松开我的纽扣 宝贝 [00:31.190]但是你站在我面前 [00:33.500]问我 你将对我做些什么 [00:35.780]但是我什么也没说 [00:39.740]典型的 [00:40.400]你几乎就是我喜欢的类型 [00:42.070]我喜欢你的身体 [00:44.120]不要离开我，向我索取更多 [00:45.640]我是火辣的女孩 [00:48.070]人们都知道怎样弄到我想要的 [00:50.730]我想做的是向你涌出我的感情 [00:52.990]实现所有我告诉你的事情 [00:56.780]你曾说所有对的事情自始至终 [01:00.450]但是我似乎不能叫你过来帮我脱掉衣服 [01:04.950]宝贝，你不知道吗？ [01:06.870]这些衣服是多么的适合我 [01:09.090]并且热度来自于节拍 [01:11.370]我快喘不过气来了 [01:13.230]我不认为你知道 [01:14.700]我让你松开我的纽扣 宝贝 [01:17.020]但是你站在我面前 [01:19.240]问我 你将对我做些什么 [01:22.020]但是我什么也没说 [01:24.180]我让你松开我的纽扣 宝贝 [01:26.400]但是你站在我面前 [01:28.480]问我 你将对我做些什么 [01:31.000]但是我什么也没说 [01:33.430]你说你是个大男孩 [01:35.560]但是我不同意 [01:37.730]因为你说过你爱我 [01:40.090]别在我面前装 [01:41.910]我想 [01:43.250]如果我对你来说很合适 [01:44.650]我想 [01:45.520]如果我吻你能让你也 [01:46.480]我想 [01:47.570]下一步我该怎么做 [01:48.840]你想让我怎么做？ [01:51.930]给你一个机会辨认出这些是你的 [01:53.710]我敢说，就跟大多数人认为的那样你的游戏根本不讨人喜欢 [01:59.890]宝贝，你不知道吗？ [02:01.260]这些衣服是多么的适合我 [02:03.240]并且热度来自于节拍 [02:05.750]我快喘不过气来了 [02:07.360]我不认为你知道 [02:08.880]我让你松开我的纽扣 宝贝 [02:11.290]但是你站在我面前 [02:13.590]问我 你将对我做些什么 [02:15.560]但是我什么也没说 [02:18.100]我让你松开我的纽扣 宝贝 [02:20.370]但是你站在我面前 [02:22.690]问我 你将对我做些什么 [02:25.180]但是我什么也没说 [02:46.750]我一再让你解开我的纽扣 宝贝 [02:47.960]解开我的纽扣 宝贝 [02:49.980]你为什么不肯解开我的纽扣 宝贝 [02:52.000]解开我的纽扣 宝贝 [02:54.310]我一再让你解开我的纽扣 宝贝 [02:56.690]解开我的纽扣 宝贝 [02:58.750]你为什么不肯解开我的纽扣 宝贝 [03:01.170]解开我的纽扣 宝贝 [03:03.200]我让你松开我的纽扣 宝贝 [03:05.660]但是你站在我面前 [03:07.980]问我 你将对我做些什么 [03:10.070]但是我什么也没说 [03:12.230]我让你松开我的纽扣 宝贝 [03:14.460]但是你站在我面前 [03:16.990]问我 你将对我做些什么 [03:19.210]但是我什么也没说 [03:21.480]我让你松开我的纽扣 宝贝 [03:24.290]但是你站在我面前 [03:26.240]问我 你将对我做些什么 [03:28.390]但是我什么也没说 [03:30.500]我让你松开我的纽扣 宝贝 [03:32.750]但是你站在我面前 [03:35.100]问我 你将对我做些什么 [03:37.730]但是我什么也没说 ` }, "code":200 }, { "sgc":true, "sfy":false, "qfy":false, "path": "D:\SorrowX\2018\xhl-live-01\trunk\web-page\歌词\和寂寞说分手-爱戴-b.mp3", "name": "和寂寞说分手", "lrc":{ "version":4, "lyric":`[00:00.00] 作曲 : 和寂寞说分手（粤语版） [00:02.25]和寂寞說分手 [00:05.86]和快樂 Say Don't Go [00:20.13][00:08.96] [00:20.56]停留在十字路口 [00:26.01]心情在四處飄遊 [00:29.90]告別曾經的溫柔 [00:32.11]讓一切再從頭 [00:37.31]收拾曾經的心情 [00:39.74]讓心不在四處飄遊 [00:42.95]忘記曾經的逗留 [00:47.19]改變一些節奏 [00:54.70]和寂寞說分手 [00:58.41]和快樂 Say Don't Go [01:01.89] [01:02.12]如果說曾經是擁有 [01:05.82]又何苦會淚流 [01:09.56]和寂寞說分手 [01:12.97]拋棄所有的所有 [01:17.07]原來曾擁有的一切 [01:20.82]全都可以放棄 [01:23.80]我的自由 [01:34.00] [01:34.18]不要說難以忘記 [01:35.90]那是懦弱的理由 [01:39.20]語不驚人死不休 [01:43.28]這次是自己 [01:46.21]徹底放自己自由 [01:52.93] [01:53.12]和寂寞說分手 [01:56.40]和快樂 Say Don't Go [02:00.17]如果說曾經是擁有 [02:03.80]又何苦會淚流 [02:07.67]和寂寞說分手 [02:11.11]拋棄所有的所有 [02:15.20]原來曾擁有的一切 [02:18.99]全都可以放棄 [02:21.95]我的自由 [02:27.24] [02:30.27]如果新的開始 [02:32.12]還是又想回頭 [02:35.68]那就承受更多的難受 [02:44.55] [02:45.30]和寂寞說分手 [02:48.84]和快樂 Say Don't Go [02:52.81]如果說曾經是擁有 [02:56.43]又何苦會淚流 [03:00.22]和寂寞說分手 [03:03.65]拋棄所有的所有 [03:07.60]原來曾擁有的一切 [03:11.41]全都可以放棄 [03:14.30]我的自由 [03:19.05]全都可以放棄 [03:24.45]我的自由 ` }, "tlyric":{ "version":0, "lyric":null }, "code":200 }, { "sgc":false, "sfy":false, "qfy":false, "path": "D:\SorrowX\2018\xhl-live-01\trunk\web-page\歌词\江南Style-信-b.mp3", "name": "江南Style-信", "lrc":{ "version":7, "lyric":`[00:00.00] 作曲 : PSY/유건형(Yoo Gun hyung) [00:00.341] 作词 : PSY [00:01.23]编曲 : 刘颖嵘 [00:20.58]오빤 강남스타일 [00:24.59]강남스타일 [00:29.82]낮에는 따사로운 인간적인 여자 [00:33.08]커피 한잔의 여유를 아는 품격 있는 여자 [00:36.71]밤이 오면 심장이 뜨거워지는 여자 [00:40.25]그런 반전 있는 여자 [00:43.98]나는 사나이 [00:45.61]낮에는 너만큼 따사로운 그런 사나이 [00:49.15]커피 식기도 전에 원샷 때리는 사나이 [00:52.94]밤이 오면 심장이 터져버리는 사나이 [00:56.45]그런 사나이 [00:58.80]아름다워 사랑스러워 [01:02.25]그래 너 hey 그래 바로 너 hey [01:06.19]아름다워 사랑스러워 [01:09.71]그래 너 hey 그래 바로 너 hey [01:13.63]지금부터 갈 데까지 가볼까 [01:21.92]오빤 강남스타일 강남스타일 [01:27.01]오오오오 오빤 강남스타일 [01:33.14]강남스타일 [01:34.43]오오오오 오빤 강남스타일 [01:38.02]Eh- Sexy Lady [01:41.65]오오오오 오빤 강남스타일 [01:45.23]Eh- Sexy Lady [01:48.98]오오오오 [02:00.18]정숙해 보이지만 놀 땐 노는 여자 [02:03.57]이때다 싶으면 묶었던 머리 푸는 여자 [02:07.12]가렸지만 웬만한 노출보다 야한 여자 [02:10.63]그런 감각적인 여자 [02:14.38]나는 사나이 [02:16.13]점잖아 보이지만 놀 땐 노는 사나이 [02:19.64]때가 되면 완전 미쳐버리는 사나이 [02:23.28]근육보다 사상이 울퉁불퉁한 사나이 [02:26.94]그런 사나이 [02:29.31]아름다워 사랑스러워 [02:32.65]그래 너 hey 그래 바로 너 hey [02:36.49]아름다워 사랑스러워 [02:40.04]그래 너 hey 그래 바로 너 hey [02:43.73]지금부터 갈 데까지 가볼까 [02:51.90]오빤 강남 스타일 강남스타일 [02:57.45]오오오오 오빤 강남스타일 [03:03.83]강남스타일 [03:04.69]오오오오 오빤 강남스타일 [03:08.44]Eh- Sexy Lady [03:12.11]오오오오 오빤 강남스타일 [03:15.87]Eh- Sexy Lady [03:19.40]오오오오 [03:23.22]뛰는 놈 그 위에 나는 놈 [03:26.06]baby baby [03:27.44]나는 뭘 좀 아는 놈 [03:30.21]뛰는 놈 그 위에 나는 놈 [03:33.36]baby baby [03:34.23]나는 뭘 좀 아는 놈 [03:36.57]You know what I'm saying [03:56.46][03:41.77]Eh- Sexy Lady [04:00.16][03:45.29]오오오오 오빤 강남스타일 [04:03.75][03:48.87]Eh- Sexy Lady [04:07.43][03:52.73]오오오오 오빤 강남스타일 ` }, "tlyric":{ "version":3, "lyric":`[00:20.58]哥哥是 江南style [00:24.59]江南style [00:29.82]白天是充满温暖人情味的女人 [00:33.08]有品位 也懂得享受咖啡的女人 [00:36.71]如果到了晚上 心脏是火热热的女人 [00:40.25]有那种反差性格的女人 [00:43.98]我是男子汉 [00:45.61]白天是像你那样温暖的男子汉 [00:49.15]就算喝咖啡也是干杯的男子汉 [00:52.94]如果到了晚上 心跳开始加快的男子汉 [00:56.45]是那样的男子汉 [00:58.80]美丽的 可爱的 [01:02.25]没错 是你 Hey 没错就是你 Hey [01:06.19]美丽的 可爱的 [01:09.71]没错 是你 Hey 没错就是你 Hey [01:13.63]现在开始到冲破极限之前 一起走吧 [01:21.92]哥哥是 江南style 江南style [01:27.01]哥哥是 江南style [01:33.14]江南style [01:34.43]哥哥是 江南style [01:41.65]哥哥是 江南style [01:48.98]Oh Oh Oh Oh [02:00.18]虽然看似文静却很懂得玩乐的女人 [02:03.57]时机到了 发束也会放开的女人 [02:07.12]虽然遮掩 但比起裸露还要更性感的女人 [02:10.63]有那种性感魅力的女人 [02:14.38]我是男子汉 [02:16.13]虽然看似稳重却很懂得玩乐的男子汉 [02:19.64]时机到了 会完全失控的男子汉 [02:23.28]思想比肌肉更加发达的男子汉 [02:26.94]是那样的男子汉 [02:29.31]美丽的 可爱的 [02:32.65]没错 是你 Hey 没错就是你 Hey [02:36.49]美丽的 可爱的 [02:40.04]没错 是你 Hey 没错就是你 Hey [02:43.73]现在开始到冲破极限之前 一起走吧 [02:51.90]哥哥是 江南style [02:57.45]哥哥是 江南style [03:03.83]江南style [03:04.69]哥哥是 江南style [03:12.11]哥哥是 江南style [03:19.40]Oh Oh Oh Oh [03:23.22]一山还有一山高 [03:27.44]我是知道些什么的人 [03:30.21]一山还有一山高 [03:34.23]我是知道些什么的人 [04:00.16][03:45.29]哥哥是 江南style [04:07.43][03:52.73]哥哥是 江南style` }, "code":200 } ] <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>song</title> <style> .box { 400px; margin: 240px auto; } .btn { display: inline-block; 80px; height: 24px; border: 1px solid #eee; margin-bottom: 20px; } .audio { display: block; } .span { margin-left: 20px; } .pre { font-family: sans-serif; } </style> </head> <body> <div class="box"> <button id="btn" class="btn">切歌</button> <span id="span" class="span"></span> <audio id="audio" class="audio" controls="controls"></audio> <pre id="lyric" class="pre"></pre> </div> <script src="./json.js"></script> <script> let ly = null let cutSong = function() { let data = arrData[Math.floor(Math.random() * arrData.length)] audio.src = data.path span.innerHTML = `歌曲: ${data.name}` ly = new Lyric(data) audio.play() } class Lyric { constructor(data) { this.data = data this.lrc = data['lrc']['lyric'] this.tlyric = data['tlyric']['lyric'] this.lrcMap = this.getLyricMap(this.lrc) this.finalLrcMap = this.convertProp(Object.assign({}, this.lrcMap)) this.tlyricMap = this.getLyricMap(this.tlyric) this.finalTlyricMap = this.convertProp(Object.assign({}, this.tlyricMap)) } getLyricMap(lrc) { let key, value, sIdx, eIdx, nsIdx let ret = {} if (!lrc || (typeof lrc !== 'string')) return ret while(lrc) { sIdx = lrc.indexOf('[') eIdx = lrc.indexOf(']') + 1 if (sIdx !== -1 && eIdx !== -1) { key = lrc.slice(sIdx, eIdx) advance(eIdx) nsIdx = lrc.indexOf('[') value = lrc.slice(0, nsIdx) ret[key] = value.trim() advance(nsIdx) } else { break } } function advance (n) { lrc = lrc.substring(n) } return ret } convertProp(obj) { Object.keys(obj).forEach((str) => { if (!obj[str]) { delete obj[str] } else { let prop = f(str) obj[prop] = obj[str] delete obj[str] } }) function f(str) { str = str.match(/^[(d+):(d+).(d+)/) return Number(str[1]) * 60 * 1000 + Number(str[2]) * 1000 + Number(str[3]) } return obj } getCurPlayLyric(audioCurTime) { let audioCurTimeMs = audioCurTime * 1000 let arrTime = Object.keys(this.finalLrcMap) let i = 0, len = arrTime.length, idx let hasTranslate = Object.keys(this.finalTlyricMap).length > 0 if (audioCurTimeMs === 0) { return g.call(this, arrTime[0]) } if (audioCurTimeMs >= Number(arrTime[len - 1])) { return g.call(this, arrTime[len - 1]) } for (; i < len; i++) { if ( audioCurTimeMs >= Number(arrTime[i - 1]) && audioCurTimeMs < Number(arrTime[i]) ) { idx = i - 1 break } } return g.call(this, arrTime[idx]) function g(prop) { return hasTranslate ? v(this.finalLrcMap[prop]) + (' ') + v(this.finalTlyricMap[prop]) : v(this.finalLrcMap[prop]) } function v(val) { return typeof val === 'undefined' ? '' : val } } } audio.addEventListener('timeupdate', () => { lyric.innerHTML = ly.getCurPlayLyric(audio.currentTime) }, false) btn.addEventListener('click', () => { cutSong() }, false) </script> </body> </html>