数据爬虫爬数据时常遇到的问题

第一，可能不能直接通过pyppeteer简单的直接page.querySelectorAll()获取所有元素然后直接

str(await (await element_songer_name.getProperty("title")).jsonValue())

得到数据值，主要原因可能是#document问题，

所以遇到这个问题不要马上就去用js试了，可以用以下代码解决

    frames = page.frames
    # print(frames)
    iframe = frames[1]  # 第一个iframe  frames[0]相当于是page.content() 整个页面的html  想要访问iframe的就要frames[0]   [1]
    # await iframe.click("#content-operation > a.u-btn2.u-btn2-2.u-btni-addply.f-fl")

    elements_song_names = await iframe.querySelectorAll("td:nth-child(2) > div > div > div > span > a > b")
    elements_songer_names = await iframe.querySelectorAll("td:nth-child(4) > div > span")

第二，如果就想用js爬，也不是不可以，其实也很方便，可以直接爬，没有#document的问题，但是如何得到适合“复制”的数据也得想想：
直接打印数组则会得到这样的数据格式：不适合复制复用：

这时我们就要换打印方式了，首先第一种：console.table(song_names)
得到的数据格式如下：

更好复制了，且有也单引号，更好放进代码里复用
最好的办法是用console.log(JSON.stringify(song_names)) 这样就得到了和python打印数组一样的结果如下：

且有体验感好得多的复制按钮：

得到的数据格式为：

["一笑懸命","パプリカ - (红辣椒)","ピリオドノック","星見る頃を過ぎても - (即使观星时刻已过)","YUBIKIRI-GENMAN","少女たちの終わらない夜","点描の唄 (ソロ ver.)","友だち - (好友)","何度も","二言目 - (TV动画《伪物语》OP1 / TVアニメ「偽物語」OP1テーマ)","それを愛と呼ぶなら - (倘若称之为爱)","EVERCHiLD","Blue","ハーフムーン・セレナーデ - ( 月半小夜曲)","Dear My Friend","大切な君へ (Acoustic ver.)","トリセツ - (电影《女主角失格》主题曲)","Ring of Fortune - (命运之环)","その声消えないよ - (音讯未绝)","杀破狼(Through The Fire Remix)","恋のテンキヨホウ (zerokoi ver.)","Little Sunshine","and I'm home　 - (エンディングキャラクターソング)","恋はキライだ - (讨厌恋爱)","夜空 - (TV动画《恋爱小行星》片尾曲)","Exodus (2016 Version)","Prayer X - (TV动画《战栗杀机》片尾曲 ； TVアニメ「BANANA FISH」EDテーマ)","愛唄~since 2007~","点描の唄 - (电影《青夏-与你相恋的30天-》插曲:映画「青夏 きみに恋した30日」挿入歌)","空の青さを知る人よ - (知晓天空之蓝的人啊)","恋の道","フルール","Ever Eternity","One Love","糸 - (线)","前前前世 [original ver.]","贈る言葉 - (电影《奔跑吧！T校篮球部》主题曲 / 映画『走れ!T校バスケット部』主題歌)","なみだ - (眼泪)","暗恋","爱呗","Cage - (「実物大ユニコーンガンダム立像」テーマソング)","散る散る満ちる - (散落飘零)","明日への手紙 - (致明日的信)","遇见 - (电影《向左走向右走》国语版插曲)","I Remember","贈る言葉 (ピアノ伴奏)","Who I Am - (日剧《七个秘书》片尾曲)","你是此生最美的风景","花びらたちのマーチ - (花瓣的游行)","光辉岁月(国语) (Live In Taiwan)","Forever Friends","大切な君へ","月灯り","六等星の夜 - (六等星之夜)","Crystalise","愛言葉 - (爱言叶)","Will (Tenkitsune x MLKSHK! Remix)","Into The Night","なきむし。 - (爱哭鬼。)","Nandemonaiya (English ver.) - (没什么大不了)","ひまわり - (向日葵)","今天你要嫁给我 - (Marry Me Today)","ツキアカリのミチシルベ","乙女どもよ。 - (少女们啊。)","もう少しだけ - (再多一点)","Summertime","来自天堂的魔鬼","Shining Friends","Rain (Long Ver.) -Extra Track-","いつかこの涙が","きみの て - (你的 手)","それが大事 - (最重要的事)","ただ声一つ（只想说一声）","リメンバー","Yesterday Once More","笑顔の花","君の知らない物語 - (你不知道的故事)","爱的双重魔力 - (电视剧《未婚妻》插曲)","ViEW","星星点灯","明日への手紙(ドラマバージョン)（2021 Remastering) - (写给明天的信)","summertime","HUMAN","さくら - (Sakura)","ツキアカリのミチシルベ - (月光的指引)","One Love","ひかりもの","aLIEz - (TV动画《ALDNOAH.ZERO》ED2:TVアニメ「アルドノア・ゼロ」ED2)","光るなら - (若能绽放光芒)","最後の花弁 (The meaning of love)","ツキアカリのミチシルベ - (TVアニメ「DARKER THAN BLACK-流星の双子-」OP1テーマ)","Love How It Hurts","君の知らない物語","月灯り (Instrumental)","After The Afterparty  (feat. Lil Yachty) [Alan Walker Remix]","明日への扉 - (通往明天的门)","明日への扉 (オリジナル・カラオケ)","After The Afterparty  (feat. Lil Yachty) [Alan Walker Remix]","BIRTHDAY","乙女どもよ。","私の言葉 - (我的话语)","シャンランラン feat.96猫 - (TV动画《飞翔的魔女》片头曲 )","A Letter","サマーブリーズにのって - (乘着夏日微风)","明日への扉","二言目 - (第二句话)","Fanfare of Adolescence - (群青开场号)","明日への扉 - (通往明天的门)","明日への扉 - (通往明天的门)","Crystalise","Amazing Trees -Extended Ver.-","A Brand New Day","何度も","マシュマリー (feat. 花里みのり&桃井愛莉&初音ミク) - (Marshmally)","Don't Turn Off The Lights","夜空。","夜空 - (TV动画《恋爱小行星》片尾曲)","What Makes You Beautiful","君の知らない物語 - (你不知道的故事)","月灯り - (月光)","月灯り","EGO [SODv] (feat. mizuki & SUGIZO)","rainfall","Amazing Trees","Lost - (电影《墨绘今生》插曲)","Crystalise","Cage - (「実物大ユニコーンガンダム立像」テーマソング)","gravityWall - (TV动画《Re:CREATORS》OP1)","ツキアカリのミチシルベ (TV size) - (月光的指引)","菫 - (TV动画《相合之物》片头曲)","Bad Apple!!","ベースラインやってる?笑 - (要来段bassline吗？笑)","回レ! 雪月花 - (旋转吧！雪月花)","ちいさな冒険者 - (小小冒险者)","おじゃま虫 - (麻烦鬼)","Drown - (TV动画《冰海战记》片尾曲2)","gravityWall - (TV动画《Re：创世主们》OP1 )","愛言葉 - (爱的话语)","点星（Point The Star） - (Point The Stars)","フリージア - (小苍兰)","知らないままで - (依然一无所知)","チキチキバンバン - (chikichikibanban)","冬の花 - (冬之花)","ただ声一つ - (只想说一声)","弱虫だって - (就算是胆小鬼)","Rubia - (崩坏3《渡尘》动画短片印象曲)","インドア系ならトラックメイカー - (内向都是作曲家)","Moon Halo - (崩坏3《薪炎永燃》动画短片印象曲)","Avid - (TV动画《86-不存在的战区-》ed)","心做し - (心理作用)","祝福 - (TV动画《机动战士高达：水星的魔女》片头曲)","忘れてもいいよ - (可以忘记了)","星が泳ぐ - (星海遨游)","Daisy - (TV动画《境界的彼方》片尾曲； TVアニメ「境界の彼方」EDテーマ)","ツギハギスタッカート - (拼凑的断音)","花の塔 - (花之塔 (TV动画《莉可丽丝》片尾曲))","STYX HELIX - (TV动画《Re:从零开始异世界生活》ED1)","灰色と青 - (灰色与青)","夜明けと蛍 - (夜阑与萤光)","打ち上げ花火","花の塔 - (花之塔)","Roads to Ride","LEVEL5 -judgelight-","パレード - (游行 Parade)","ほころび - (绽放)","それを愛と呼ぶなら - (若要称之为爱)","六等星の夜 - (六等星之夜)","アイシテ - (来爱我)","届かない恋 - (无法传达的恋情)","そばにいるね 青山テルマ feat. Soulja - (留在我身边)","素直になれたら - (若能更加直率)","最後の花弁 (The meaning of love) - (最后的花瓣（爱的意义）)","ツバメ (feat. ミドリーズ) - (燕子)","アオイハルカゼ - (青色春风)","どうして… - (どうして… - Doushite...)","最高の片想い - (弥足珍贵的单相思)","初恋 (TVアニメ「月がきれい」EDIT ver.) - (TV动画《月色真美》第3话插曲:TVアニメ「月がきれい」挿入歌)","Spirits","時雨 - (时雨)","あまねき祈り - (普通心愿)","ONE's hope","一瞬のクオリア - (一瞬间的感质)","きみの て - (你的手)","骄傲的少年 - (动画《那年那兔那些事儿》第二季片尾曲)","未だ知られぬ物語 ～ Anticipated Dream - (还未知晓的物语 ~ 悄然期待的梦)","モーメント","哀の隙間 - (哀的间隙)","オレンジ - (橘 Orange)","You Belong With Me (Taylor’s Version)","君のいない人生なんて ほんの少しも分からなくて","Love Story","さようなら、花泥棒さん (cover) - (再见了，盗花人)","花びら - (花瓣)","さようなら、花泥棒さん","アタック!ギャグマンガ日和　(Nazuka Ver.)","简单与初夏","ヒミツ (feat. 可不) - (秘密)","いっせーのーで - (一二三)","マシュマリー - (marsh mally)","くうになる (feat. 可不) - (放空)","After All","Rage Your Dream - (TV动画《头文字D》ED1)","約束 - (约定)","追梦赤子心 - (2013《快乐男声》主题曲)","走着走着花就开了","Something Just Like This(Megamix)","Run Free","A/Z <MODv>","だきしめるまで。 (feat. 可不) - (直到拥抱)","Brand New Day","You & I","Outerspace","Butterfly 数码宝贝主题曲 Piano ver.","夏の日 - (夏日)","誇り高きアイドル - (骄傲的偶像)","Treasure U","Wake (Studio)","BIRTHDAY","恋はキライだ - (讨厌恋爱)","コミュニケーション - (Communication)","Blue","ただ君に晴れ - (只为你拨云放晴)","RPG","ゆいいつむに - (独一无二)","halcyon","HANNARI","Creep","The Way I Still Love You","青春なんていらないわ - (无需青春)","summertime","Little Do You Know","Shotgun","Airwaves","First Date","Forgettable","Collapsing World - (崩溃的世界)","pure imagination - (纯粹的幻想)","Trial and Error (English Ver.) feat. Elira Pendora","Deja Vu（cover Uki Violeta）","水风船 - (ゲーム「翡翠の雫 緋色の欠片2」OPテーマ)","虚構の楽園 - (虚构的乐园)","ｻﾏｰﾌﾞﾘｰｽﾞにのって","雨のち想い出 - (雨后回忆)","散る散る満ちる - (散落飘零)","久遠 ~光と波の記憶~（Arrange Version） - (久远 ~光与波的记忆~（重编曲版）)","フルール - (花)","Inhibition","ひかりもの - (发光体)","WHITE ALBUM","星のパンフレット - (星星的小册子)","優しい彗星 - (温柔的彗星 (TV动画《BEASTARS》第二季片尾曲))","EXEC_COSMOFLIPS/.","ぼくらのレットイットビー - (让我们顺其自然)","マイライフ - (我的生活)","森林","Rubia","幾年月","夕日坂 - (夕阳下的坡道)","Sunshine Girl","泥だんごの天才いたよね - (有捏泥团子的天才哟)","だんご大家族 - (团子大家族)","Daylight - (日光)","Eutopia - (乌托邦)","色は匂へど 散りぬるを -Full Version- - (花朵艳丽 终会散落)","鳥の詩 - (鸟之诗)","手つかずの感情 - (未曾经历的感情)","「戦場ヶ原、蕩れ」","夜の向日葵 - (夜之向日葵)","雨爱 - (电视剧《海派甜心》片尾曲)","左边","銀の龍の背に乗って - (骑在银龙的背上)","銀の龍の背に乗って(TV MIX) - (骑在银龙的背上（Tv-Mix）)","ルージュ - (口红)","漫步人生路","やさしい女","漠河舞厅","青空","바람에 쓰는 편지 - (写在风中的信)","tutu - (芭蕾短裙)","水星","Feeling The Rain","星萤火","三葉のテーマ - (三叶的主题曲)","Ephemeral Memories - (转瞬即逝的记忆)","声","星茶会","DAYBREAK FRONTLINE","DAYBREAK FRONTLINE - (黎明前线)","メリーメリー álbum ver. - (merry merry)","Will","太陽と向日葵 - (太阳与向日葵)","螢塚 - (萤塚)","Adagio for Summer Wind - (夏风柔板)","神のまにまに - (神的随波逐流)","DAYBREAK FRONTLINE - (拂晓前线)","Into The Night - (夜に駆ける English Ver.)","約束の絆 - (约定的羁绊)","空の青さを知る人よ - (知晓天空之蓝的人啊)","蛍 - (萤)","and I'm home -Original Master Version.- - (TV动画《魔法少女小圆》第9集片尾曲)","Hesitate","1年2ヶ月20日 泣いちゃう前にver - (1年2个月20天)","カントリー・ロード - (Contry Road)","你是玫瑰","One Love - (电影《花样男子最终章》主题曲)","MY ALL","1时间","桜咲く - (樱花绽放)","なきむし。 - (爱哭鬼。)","なきむし。 Acoustic Ver. - (爱哭鬼。)","Home","glow","パズル - (拼图)","Letter Song - (致十年后的我)","Prayer X - (TV动画《战栗杀机》片尾曲)","春を告げる - (宣告春天)","何度も - (无数次)","Sunshine - (TV动画《滑头鬼之孙》OP2)","A Brand New Day","幻の命 - (虚无缥缈的生命)","世界は恋に落ちている - (我的世界已坠入爱河)","Diamond City Lights - (钻石之城的闪耀)","THERE IS A REASON - (剧场版《NO GAME NO LIFE 游戏人生 ZERO》主题曲)","unjust life","雪風 - (原曲:明日ハレの日、ケの昨日)","かわくだり","ヨワネハキ - (示弱)","my most precious treasure","光るなら - (若能绽放光芒)","My Soul - (忧伤还是快乐)","The Right Path","Old Memory","恋はヒラひらり - (爱在飘扬)","夏恋","いのちの名前 - (生命之名)","Snow Night","君想う、星屑の空。 - (想念你，夜空群星)","贈る言葉 - (电影《奔跑吧！T校篮球部》主题曲)","夏日漱石","君だったら - (如果是你)","友だち - (朋友)","Story","Slow & Easy","トリセツ - (电影《女主角失格》主题曲)","ただ、ありがとう - (只想说，谢谢妳)","始まりの唄 - (初始之歌)","drop pop candy","ロミオとシンデレラ - (罗密欧与辛德瑞拉)","その声消えないよ feat. Sunya - (你的声音不会消失)","Cage - (「実物大ユニコーンガンダム立像」テーマソング)","ここにいるよ - (我就在这里)","1年2ヶ月20日 - (1年2个月20天)","贝加尔湖畔","一生有你","离歌","Shelter","ハルジオン - (春紫菀)","彼女は旅に出る - (她踏上了旅途)","岁月神偷","侧脸","夢追人","何もかも有り余っている こんな時代も - (即便是这个所有一切都显得多余的时代)","No title - (无题)","終わりの世界から - (自终末世界)","mede:mede","アゲイン - (又一次)","In Love","Promise - (PS2游戏《寂静岭2》玛利亚结局片尾曲)","老人と海 - (老人与海)","Lanterns - (灯笼)","inside you - (日剧《丑闻专门律师QUEEN》片头曲:ドラマ『スキャンダル専門弁護士 QUEEN』オープニングテーマ)","Who I Am - (日剧《七个秘书》片尾曲)","もう少しだけ - (再多一点)","Close To The Sun","BLISS","Oblivion","Burning","Burning","狂おしいほど僕には美しい - (狂谬即美丽)","From Here","So High","そよ風 - (微风)","乙女どもよ。 - (少女们啊。)","ひまわり - (向日葵)","倒带","まちがいさがし - (错寻)","Journey","メグルユメ - (原曲:さくらさくら ～ Japanize Dream...)","勿念他归 - (《千本樱》钢琴版伴奏)","ヤキモチ - (吃醋)","妖々夢 - (妖々夢)","跟我在一起","Endless Tears ~終わらないメロディー~ feat. メロディー・チューバック","我的主题曲","Setsuna - (刹那)","思念是一种病","布拉格广场","PLANET","我的骄傲","我的骄傲","K歌之王 (国语版)","不期而遇的夏天 - (电影《不期而遇的夏天》主题曲)","K歌之王","稳稳的幸福 - (电影《越来越好之村晚》主题曲)","陪你度过漫长岁月 - (电影《陪安东尼度过漫长岁月》主题曲)","十年","爱情转移 - (电影《爱情呼叫转移》主题曲)","Runaway","雪解 (おてんば恋娘)","风神の调べ~优艶幻想曲集~","静寂の森(U.N.オーエンは彼女なのか? [东方红魔郷])","朝もお昼も夢の中も - (在清晨或者中午又或许在梦中)","NEXT TO YOU - (TV动画《寄生兽 生命的准则》配乐)","好きだよ。~100回の後悔~ (English Ver.)","Lupinus - (原曲:ネイティブフェイス)","Rather Be","Rather Be - (宁愿)","Burning","花とあれ - (花与你)","風の記憶 - (风的记忆)","Dragonfly Keeper","Strongest (Bogen Remix)","まちがいさがし - (找错游戏)","Stranger Things (Alan Walker Remix)","初夏的风","Dreamland","Fluctuate","南半球与北海道","Mardröm","Love How It Hurts","Apollo's Triumph - No Choir [Paul Dinletir Remix]","爱你(cover)","ねぇ - (呐)","明日への手紙(ドラマバージョン) - (写给明天的信)","ミカヅキ","내겐 그대뿐이죠 - (对我来说只有你)","キセキ - (奇迹)","Oblivion","覚醒 - (剧场版《PROMARE》主题曲)","The End of the World","なんでもないや (movie edit) - (没什么大不了)","スパークル [original ver.] - (火花)","Force","Believers","On My Way - (《和平精英》盛夏推广曲)","Alone, Pt. II","Diamond Heart","Different World","Lily","Lost Control","Sing Me to Sleep","Darkside","Alone","This Is Me (Alan Walker Relift) [From \"The Greatest Showman\"]","After the Afterparty (feat. Lil Yachty) [Alan Walker Remix]","New Silk Road - (新丝绸之路)","Rocky (Gonna Fly Now) - (洛奇)","Pirates Of The Caribbean (He's A Pirate) - (加勒比海盗)","Croatian Rhapsody - (克罗地亚狂想曲)","Exodus - (出埃及记)","リテラチュア - (旅途的华章)","April Showers (2018 Digital Remaster)","Various Artists-卡农【电音版】（Ysh remix）","しろつめくさ - (白车轴草)","Let's Run Away","深海","Into The Sun","一笑懸命 - (一笑悬命)","メロディー","キセキ~未来へ~ - (致以未来的足迹~)","恋のテンキヨホウ","ポケット - (《辛巴达：飞天公主与秘密之岛》剧场版主题曲)","あの頃~ジンジンバオヂュオニー~ - (那些年~紧紧抱着你~)","ハンブンコ","愛唄～since 2007～ - (电影《闪烁的爱情》主题曲)","卒業ソング","君想い","タンポポ","Look At Me Now","Here And Now","手紙 〜拝啓　十五の君へ〜 - (敬启—致十五岁的你)","Pillow talk","花びらたちのマーチ - (花瓣的游行)","Paprika","未来へ - (向着未来)","We'll Meet Again","道","哭泣站台","New Boy","Headlight -piano version-","Let Me Down Slowly","Yukiyanagi 雪柳~We're watching you~(Album version)","Headlight","Beautiful World","Seasons in the Sun","Lone Ranger","Boom Clap","Zombie","空も飛べるはず（Album Version） - (定能飞向天空)","ひとり上手 - (习惯孤独)","房间-新版 - (电影《超时空同居》插曲)","Lemon - (电视剧《非自然死亡》主题曲:ドラマ「アンナチュラル」主題歌)","Starfall - (崩坏3动画短片《天穹流星》印象曲)","なんでもないや/没什么大不了 -Acoustic ver.- - (没什么大不了)","あの夢をなぞって piano ver. - (描绘那场梦)","雨き声残響 - (雨声残响)","YUBIKIRI-GENMAN","夜行 - (Night Journey)","ONE","八年的爱","云烟成雨 - (动画《我是江小白》片尾曲)","I Love You (中文版)","Never Ending World - (ネバーエンディングワールド)","手纸 ~拝啓 绪五の君へ~ - (敬启~给十五岁的自己)","四季予你","海に行く - (去海边)","糸 - (线)","空の境","To the Lost and Forgotten","Un Año - (度日如年)","Estoy Aqui","ハローハロー - (你好你好 HelloHello)","stay with me","アイノカタチ - (MISIA提供楽曲セルフカバー)","爱呗","ひとりじゃない - (不再孤单前行)","ひとりじゃない ～繋がる想い～ present for 常盤木学園高等学校 - (Hitorijyanai ?Tsunagaruomoi? present for Tokiwaki Gakuen High School)","君に贈る詩 - (送给你的歌)","孟姜女","It's Ok","Don't Turn Off The Lights","这世界那么多人 - (电影《我要我们在一起》主题曲)","Blue Sky","M18","トモダチ/コイビト - (朋友/恋人)","Valder Fields","Sugar","越来越不懂","道","Why Would I Ever","Break Me Down","船上の音楽団 - (船上的音乐团)","Lucky","生きていたんだよな - (她曾活过啊)","追","红色高跟鞋 - (电影《爱情呼叫转移2》主题曲)","Fight","Dj Nanda V2 3","Forever Young","ロック风アレンジ","Dreamer","Love Is Gone (Acoustic)","Let Me Go","Tu vas me manquer (Pilule Bleue) - (我会想你（蓝色药片）)","Do Or Die","I'm Crazy in Love","星辰 (original Mix)","K-49","The Dawn（亡灵序曲）","All I Ever Wanted","sand dream","砂塵の彼方へ - (致沙丘的彼岸)","夜空。","Mine (Illenium Remix)","I wanted you","What Are You Waiting For?","I Said Hi","Félix - (牡丹花下)","Wonderful World","Stuttering","Enchanted","You Smile","The Sandman","Always Getting Over You","卒業メモリーズ〜サヨナラ、あなた。〜 - (毕业记忆 ～再见  亲爱的你)","Rage your dream - (燃烧你的梦想)","Hello friend(电音版)","What Makes You Beautiful - (是什么让你如此美丽)","恋の道 - (Koinomichi)","Can't Stop Love","無口な明日を嫌わないで","春風 SHUN PU","Keep You Safe","The Upside of Down","フロントメモリー - (电影《恋如雨止》主题曲:映画「恋は雨上がりのように」主題歌)","哈尼宝贝","theme of SSS","Honey Take My Hand","Life Is Beautiful","The Star","Raindrops","Shutterbug","Kachoufugetsu - (花鸟风月)","笑顔の花 - (笑靥如花)","だから僕は音楽を辞めた - (所以我放弃了音乐)","Summer Vibe","Brave Song - (TV动画《天使的心跳》ED1)","I Do","New Soul - (不谙世道)","The Show"]

所以采用js获取数据也是不错的选选择，但是如果是偏大型一点的爬虫，直接在浏览器控制台打js代码获取数据就不太好了(虽然我们一般都是在vscode先写好几十行代码后再复制到控制台运行)，

但是对于偏大一些的数据爬虫，我们还是首选在编译器运行(甚至写好js脚本项目后打包到浏览器脚本或插件后再运行！)