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javascript - 如何控制pace.js的加载速度?

转载 作者:行者123 更新时间:2023-11-30 10:02:38 25 4
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我尝试使用 pace.js 添加页面预加载器,基本上这个插件的工作方式是将 pace.js 文件添加到页面并添加 pace.js 提供的任何 css 主题,见here .

现在我这样做了,但我的问题是,插件文档中的任何地方都没有指定如何控制插件的加载时间。我如何实际控制预加载器插件的加载时间?

Fiddle here

文档对这个插件的描述如下:

Include pace.js and the theme css of your choice on your page (as early as is possible), and you're done!

Pace will automatically monitor your ajax requests, event loop lag, document ready state, and elements on your page to decide the progress. On ajax navigation it will begin again!

If you use AMD or Browserify, require in pace.js and call pace.start() as early in the loading process as is possible.

到目前为止我只是添加插件代码,我什至没有写一行js来初始化插件:

/*! pace 1.0.0 */
(function(){var a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X=[].slice,Y={}.hasOwnProperty,Z=function(a,b){function c(){this.constructor=a}for(var d in b)Y.call(b,d)&&(a[d]=b[d]);return c.prototype=b.prototype,a.prototype=new c,a.__super__=b.prototype,a},$=[].indexOf||function(a){for(var b=0,c=this.length;c>b;b++)if(b in this&&this[b]===a)return b;return-1};for(u={catchupTime:100,initialRate:.03,minTime:250,ghostTime:100,maxProgressPerFrame:20,easeFactor:1.25,startOnPageLoad:!0,restartOnPushState:!0,restartOnRequestAfter:500,target:"body",elements:{checkInterval:100,selectors:["body"]},eventLag:{minSamples:10,sampleCount:3,lagThreshold:3},ajax:{trackMethods:["GET"],trackWebSockets:!0,ignoreURLs:[]}},C=function(){var a;return null!=(a="undefined"!=typeof performance&&null!==performance&&"function"==typeof performance.now?performance.now():void 0)?a:+new Date},E=window.requestAnimationFrame||window.mozRequestAnimationFrame||window.webkitRequestAnimationFrame||window.msRequestAnimationFrame,t=window.cancelAnimationFrame||window.mozCancelAnimationFrame,null==E&&(E=function(a){return setTimeout(a,50)},t=function(a){return clearTimeout(a)}),G=function(a){var b,c;return b=C(),(c=function(){var d;return d=C()-b,d>=33?(b=C(),a(d,function(){return E(c)})):setTimeout(c,33-d)})()},F=function(){var a,b,c;return c=arguments[0],b=arguments[1],a=3<=arguments.length?X.call(arguments,2):[],"function"==typeof c[b]?c[b].apply(c,a):c[b]},v=function(){var a,b,c,d,e,f,g;for(b=arguments[0],d=2<=arguments.length?X.call(arguments,1):[],f=0,g=d.length;g>f;f++)if(c=d[f])for(a in c)Y.call(c,a)&&(e=c[a],null!=b[a]&&"object"==typeof b[a]&&null!=e&&"object"==typeof e?v(b[a],e):b[a]=e);return b},q=function(a){var b,c,d,e,f;for(c=b=0,e=0,f=a.length;f>e;e++)d=a[e],c+=Math.abs(d),b++;return c/b},x=function(a,b){var c,d,e;if(null==a&&(a="options"),null==b&&(b=!0),e=document.querySelector("[data-pace-"+a+"]")){if(c=e.getAttribute("data-pace-"+a),!b)return c;try{return JSON.parse(c)}catch(f){return d=f,"undefined"!=typeof console&&null!==console?console.error("Error parsing inline pace options",d):void 0}}},g=function(){function a(){}return a.prototype.on=function(a,b,c,d){var e;return null==d&&(d=!1),null==this.bindings&&(this.bindings={}),null==(e=this.bindings)[a]&&(e[a]=[]),this.bindings[a].push({handler:b,ctx:c,once:d})},a.prototype.once=function(a,b,c){return this.on(a,b,c,!0)},a.prototype.off=function(a,b){var c,d,e;if(null!=(null!=(d=this.bindings)?d[a]:void 0)){if(null==b)return delete this.bindings[a];for(c=0,e=[];c<this.bindings[a].length;)e.push(this.bindings[a][c].handler===b?this.bindings[a].splice(c,1):c++);return e}},a.prototype.trigger=function(){var a,b,c,d,e,f,g,h,i;if(c=arguments[0],a=2<=arguments.length?X.call(arguments,1):[],null!=(g=this.bindings)?g[c]:void 0){for(e=0,i=[];e<this.bindings[c].length;)h=this.bindings[c][e],d=h.handler,b=h.ctx,f=h.once,d.apply(null!=b?b:this,a),i.push(f?this.bindings[c].splice(e,1):e++);return i}},a}(),j=window.Pace||{},window.Pace=j,v(j,g.prototype),D=j.options=v({},u,window.paceOptions,x()),U=["ajax","document","eventLag","elements"],Q=0,S=U.length;S>Q;Q++)K=U[Q],D[K]===!0&&(D[K]=u[K]);i=function(a){function b(){return V=b.__super__.constructor.apply(this,arguments)}return Z(b,a),b}(Error),b=function(){function a(){this.progress=0}return a.prototype.getElement=function(){var a;if(null==this.el){if(a=document.querySelector(D.target),!a)throw new i;this.el=document.createElement("div"),this.el.className="pace pace-active",document.body.className=document.body.className.replace(/pace-done/g,""),document.body.className+=" pace-running",this.el.innerHTML='<div class="pace-progress">\n <div class="pace-progress-inner"></div>\n</div>\n<div 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a(){var a=this;this.elements=[],y().on("request",function(){return a.watch.apply(a,arguments)})}return a.prototype.watch=function(a){var b,c,d,e;return d=a.type,b=a.request,e=a.url,I(e)?void 0:(c="socket"===d?new n(b):new o(b),this.elements.push(c))},a}(),o=function(){function a(a){var b,c,d,e,f,g,h=this;if(this.progress=0,null!=window.ProgressEvent)for(c=null,a.addEventListener("progress",function(a){return h.progress=a.lengthComputable?100*a.loaded/a.total:h.progress+(100-h.progress)/2},!1),g=["load","abort","timeout","error"],d=0,e=g.length;e>d;d++)b=g[d],a.addEventListener(b,function(){return h.progress=100},!1);else f=a.onreadystatechange,a.onreadystatechange=function(){var b;return 0===(b=a.readyState)||4===b?h.progress=100:3===a.readyState&&(h.progress=50),"function"==typeof f?f.apply(null,arguments):void 0}}return a}(),n=function(){function a(a){var b,c,d,e,f=this;for(this.progress=0,e=["error","open"],c=0,d=e.length;d>c;c++)b=e[c],a.addEventListener(b,function(){return f.progress=100},!1)}return a}(),d=function(){function a(a){var b,c,d,f;for(null==a&&(a={}),this.elements=[],null==a.selectors&&(a.selectors=[]),f=a.selectors,c=0,d=f.length;d>c;c++)b=f[c],this.elements.push(new e(b))}return a}(),e=function(){function a(a){this.selector=a,this.progress=0,this.check()}return a.prototype.check=function(){var a=this;return document.querySelector(this.selector)?this.done():setTimeout(function(){return a.check()},D.elements.checkInterval)},a.prototype.done=function(){return this.progress=100},a}(),c=function(){function a(){var a,b,c=this;this.progress=null!=(b=this.states[document.readyState])?b:100,a=document.onreadystatechange,document.onreadystatechange=function(){return null!=c.states[document.readyState]&&(c.progress=c.states[document.readyState]),"function"==typeof a?a.apply(null,arguments):void 0}}return a.prototype.states={loading:0,interactive:50,complete:100},a}(),f=function(){function a(){var 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我如何实际控制插件的加载时间?另一个问题是预加载器加载时页面内容是可见的,为什么?该插件是否提供了一种在插件加载时隐藏页面内容的机制,或者是在我身上?

最佳答案

来自 the docs ,它指出您可以在加载文件之前设置配置选项。因此,在您的 html 页面中,您将执行如下操作:

<head>
<title>asdfas</title>
<script>
paceOptions = {
ajax: false, // disabled
document: true, // enabled
eventLag: false, // disabled
elements: {
selectors: ['.my-page']
}
};
</script>
<script src="js/pace.js"></script>

这将使用页面的 readyState 创建进度条。

关于javascript - 如何控制pace.js的加载速度?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/30798062/

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