在中控台添加帧率显示功能

针对不同博客，改动略有不同，本文仅供参考，我这里把fps开关放到了中控台

• 修改 themes/butterfly/layout/includes/header/nav.pug

  #page-name-mask
  #page-name
    a#page-name-text(onclick= 'btf.scrollToDest(0,500)')=navTitleName
  #menus
    !=partial('includes/header/menu_item', {}, {cache: true})
  #nav-left
    #fps-group
      #fps
       span.fpsText=_p('FPS')

• 修改 themes/butterfly/layout/includes/console.pug

  if theme.console.keyboard.enable
   .console-btn-item#consoleKeyboard(onclick='manxin.keyboardToggle()', title='快捷键开关')
       a.keyboard-switch
           i.fas.fa-keyboard
   .console-btn-item#consoleCommentBarrage(onclick='manxin.switchCommentBarrage()', title='热评开关')
       a.commentBarrage
           i.fa-solid.fa-message
    .console-btn-item#consoleFPS(onclick='manxin.FPSToggle()', title='帧率显示开关')
        a.FPS-switch
            i.fas.fa-gauge

• 新建 themes/butterfly/source/manxin/fps.js（引入js略）

  let Jay_showFPS = !1;
  "true" === localStorage.getItem("showFPS") ?
    ((Jay_showFPS = !0),
        document.querySelector("#fps-group").classList.add("show"),
        document.querySelector("#consoleFPS").classList.add("on")) :
    ((Jay_showFPS = !1),
        document.querySelector("#fps-group").classList.remove("show"),
        document.querySelector("#consoleFPS").classList.remove("on"));
  var showFPS = (function() {
    let e,
        t,
        o,
        n,
        a,
        i =
        window.requestAnimationFrame ||
        window.webkitRequestAnimationFrame ||
        window.mozRequestAnimationFrame ||
        window.oRequestAnimationFrame ||
        window.msRequestAnimationFrame ||
        function(e) {
            window.setTimeout(e, 1e3 / 60);
        };
    (e = 0),
    (t = Date.now()),
    (n = function() {
        (o = Date.now() - t),
        (e += 1),
        o >= 1e3 && ((t += o), a(e), (e = 0)),
            i(n);
    }),
    (a = function(e) {
        $("#fps").html(e);
    }),
    n();
  })();
  var manxin = {
    FPSToggle: function() {
        Jay_showFPS
            ?
            ((Jay_showFPS = !1),
                document.querySelector("#fps-group").classList.remove("show"),
                document.querySelector("#consoleFPS").classList.remove("on"),
                localStorage.setItem("showFPS", "false")) :
            ((Jay_showFPS = !0),
                document.querySelector("#fps-group").classList.add("show"),
                document.querySelector("#consoleFPS").classList.add("on"),
                localStorage.setItem("showFPS", "true"));
    },
  };

• 新建 themes/butterfly/source/manxin/fps.css（引入css略）

  /* FPS */
  #fps-group.show {
    opacity: 1;
  }
  
  .nav-fixed #fps-group,
  .not-top-img #fps-group {
    color: var(--Jay-fontcolor);
  }
  
  #fps-group {
    opacity: 0;
    display: flex;
    flex-direction: column;
    margin-left: 16px;
    color: var(--Jay-white);
  }
  
  #fps {
    z-index: 10000;
    font-size: 12px;
    font-weight: 700;
    transition: all 0.3s ease 0s;
    line-height: 1;
  }
  
  #fps-group .fpsText {
    font-size: 12px;
    line-height: 1;
    opacity: 0.6;
  }
    /* FPS */