safari 尾部 script 阻塞页面渲染的问题 - V2EX
V2EX = way to explore
V2EX 是一个关于分享和探索的地方
Sign Up Now
For Existing Member  Sign In
beilo

safari 尾部 script 阻塞页面渲染的问题

  •  
  •   beilo Aug 9, 2019 1885 views
    This topic created in 2455 days ago, the information mentioned may be changed or developed.

    最近做了个手机项目,为了优化交互在首屏有个 load 的动画.在其他设备上都是正常的,唯有 ios 上白屏,等到所有的 script 加载完成才会渲染.在 google 上没有查询到有用的结果.不知道有没有 v 友能提供一些帮助.

    <!DOCTYPE html> <html lang="en"> <head> ...省略 <style type="text/css"> .index-load { position: fixed; top: 50%; left: 50%; transform: translate(-50%, -50%); } .index-load img { width: 80px; height: 80px; margin: 0px auto; } </style> <!-- UI 组件库 1.0 --> <script src="https://webapi.amap.com/ui/1.0/main.js?v=1.0.11"></script> <link rel="stylesheet" href="./swiper.min.css" /> <script src="./swiper.min.js"></script> </head> <body> <div id="root"> <div class="index-load"> <h4>loading...</h4> </div> </div> <script type="text/Javascript" src="manifest.bundle.e49239d9939be1e9d187.js" async></script> <script type="text/Javascript" src="vendors.21fb76d947bb4b3052a5.js" async></script> <script type="text/Javascript" src="index.b5c33feb2f5cb956513d.js" async></script> </body> </html> 

    如上代码,vendors.js加载完成才会进行渲染,而尾部script都已经加了async关键字,但是毫无作用. 相关提问,非本人

    谢谢.

    4 replies    2019-08-12 14:01:20 +08:00
    love
        1
    love  
       Aug 9, 2019 via Android
    加一个 defer 试一试?
    beilo
        2
    beilo  
    OP
       Aug 12, 2019
    @love 也不行呢.也是会加载完毕再进行渲染.
    love
        3
    love  
       Aug 12, 2019
    @beilo 你这个不是还有几个 script 放在 head?
    beilo
        4
    beilo  
    OP
       Aug 12, 2019
    @love 是的,但是那几个很快,而且必须要放在前面的.head 上的加载时间可以忽略不计.主要是 vendors.js 占用时间,导致白屏.虽说我已经分包处理过,在线上首屏首次加载在 1s 之内,但是 ios 那段白屏时间还是有的.想看看能不能优化的更好点
    About     Help     Advertise     Blog     API     FAQ     Solana     927 Online   Highest 6679       Select Language
    创意工作者们的社区
    World is powered by solitude
    VERSION: 3.9.8.5 31ms UTC 21:12 PVG 05:12 LAX 14:12 JFK 17:12
    Do have faith in what you're doing.
    ubao msn snddm index pchome yahoo rakuten mypaper meadowduck bidyahoo youbao zxmzxm asda bnvcg cvbfg dfscv mmhjk xxddc yybgb zznbn ccubao uaitu acv GXCV ET GDG YH FG BCVB FJFH CBRE CBC GDG ET54 WRWR RWER WREW WRWER RWER SDG EW SF DSFSF fbbs ubao fhd dfg ewr dg df ewwr ewwr et ruyut utut dfg fgd gdfgt etg dfgt dfgd ert4 gd fgg wr 235 wer3 we vsdf sdf gdf ert xcv sdf rwer hfd dfg cvb rwf afb dfh jgh bmn lgh rty gfds cxv xcv xcs vdas fdf fgd cv sdf tert sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf sdf shasha9178 shasha9178 shasha9178 shasha9178 shasha9178 liflif2 liflif2 liflif2 liflif2 liflif2 liblib3 liblib3 liblib3 liblib3 liblib3 zhazha444 zhazha444 zhazha444 zhazha444 zhazha444 dende5 dende denden denden2 denden21 fenfen9 fenf619 fen619 fenfe9 fe619 sdf sdf sdf sdf sdf zhazh90 zhazh0 zhaa50 zha90 zh590 zho zhoz zhozh zhozho zhozho2 lislis lls95 lili95 lils5 liss9 sdf0ty987 sdft876 sdft9876 sdf09876 sd0t9876 sdf0ty98 sdf0976 sdf0ty986 sdf0ty96 sdf0t76 sdf0876 df0ty98 sf0t876 sd0ty76 sdy76 sdf76 sdf0t76 sdf0ty9 sdf0ty98 sdf0ty987 sdf0ty98 sdf6676 sdf876 sd876 sd876 sdf6 sdf6 sdf9876 sdf0t sdf06 sdf0ty9776 sdf0ty9776 sdf0ty76 sdf8876 sdf0t sd6 sdf06 s688876 sd688 sdf86