防止firefox中的fouc和ie

时间:2015-11-07 20:49:22

标签: javascript css firefox asynchronous fouc

我正试图阻止FF和FOUC的FOUC IE浏览器。加载我的CSS异步,(可以理解)导致它。设置隐藏然后显示正文的功能在Chrome上运行,但不适用于IE / FF。

我已经尝试过在线显示的每个解决方案,这些解决方案应该可行,但没有。想知道我的代码中是否存在被忽略的内容;还是其他人都知道的解决方案?

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1">


    <title>Web Refinery</title>



    <link rel="shortcut icon" type="image/x-icon" href="/favicon.ico">

    <style>
        .navbar.navbar-default.navbar-fixed-top{border:none;padding-right:2%;font-size:18px;background-color:#000;background-color:rgba(0,0,0,.6);filter:progid:DXImageTransform.Microsoft.gradient(startColorstr=#99000000, endColorstr=#99000000);-ms-filter:progid:DXImageTransform.Microsoft.gradient(startColorstr=#99000000, endColorstr=#99000000)}ul.navbar-left{color:#000;list-style: outside none none;padding-left:1%;padding-right:1%;margin-top:1%}a.navbar-brand{padding-top:1%;margin-bottom:1%;padding-right:1%}
    </style>



</head>
  <body style="display:none">
    <div class="container-fluid">
     <nav class="navbar navbar-default navbar-fixed-top">
          <div class="navbar-header">
            <button type="button" class="navbar-toggle" data-toggle="collapse" data-target="#myNavbar">
                <span class="sr-only">Toggle navigation</span>
                <span class="icon-bar"></span>
                <span class="icon-bar"></span>
                <span class="icon-bar"></span>
            </button>
            <a class="navbar-brand" href="/"><img src="img/logo1-min.png"></a>     
          </div>

         <div class="collapse navbar-collapse" id="myNavbar">
            <ul class="navbar-left">
            <li type="none" class="hover descript">Design & Development</li> 
            </ul>  
            <ul class="nav navbar-nav navbar-right">
                <li class="hover"><a href="portfolio.html">Portfolio<span class="sr-only"></span></a></li>
                <li class="hover"><a href="services.html">Services</a></li>
            <li class="hover"><a href="contact.html">Contact<span class="sr-only"></span></a></li>
            </ul>
        </div><!-- /.navbar-collapse -->
      </nav>
      <div class="row text-center headDrop">
        <div class="col-md-1"></div>  
        <div class="col-md-10">
          <h1>WEB REFINERY</h1>
          <h2>Responsive Design & Development</h2>
        </div>
        <div class="col-md-1"></div>  
          <br>
        </div>  
        <div class="row text-center">
            <div class="col-md-1"></div>
            <div class="col-md-10">
                <br>

                <p>Metro Milwaukee - Design Studio</p>
                <p>Web Design - Development - Branding</p>
            </div>
            <div class="col-md-1"></div>
        </div>  
    </div>

        <script type="text/javascript">
        /* Beginning of async download code. */
        window.onload = function(){

            function loadjscssfile(filename, filetype) {
                if(filetype == "js") {
                    var cssNode = document.createElement('script');
                    cssNode.setAttribute("type", "text/javascript");
                    cssNode.setAttribute("src", filename);
                } else if(filetype == "css") {
                    var cssNode = document.createElement("link");
                    cssNode.setAttribute("rel", "stylesheet");
                    cssNode.setAttribute("type", "text/css");
                    cssNode.setAttribute("href", filename);
                }
                if(typeof cssNode != "undefined")
                    document.getElementsByTagName("head")[0].appendChild(cssNode);
            }
            loadjscssfile("//maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css", "css");
            loadjscssfile("/css/main-min.css", "css");

            loadjscssfile("//ajax.googleapis.com/ajax/libs/jquery/2.1.4/jquery.min.js", "js");
            loadjscssfile("//maxcdn.bootstrapcdn.com/bootstrap/3.3.5/js/bootstrap.min.js", "js");
            loadjscssfile("/js/main-min.js", "js");



        };
        /* End of async download code. */

        document.onreadystatechange = function () {
                var view = document.getElementsByTagName('body')[0];
                  if (document.readyState == "complete") {
                      view.style.removeProperty('display');
                  } else {}

        };


    </script>   

  </body>

</html>

2 个答案:

答案 0 :(得分:2)

这是我用来解决FOUC问题的解决方案。我将HTML标记的不透明度设置为0,并给模板.25秒完成所需的所有CSS模板。然后使用JQuery淡入内容。

<html id="no-fouc" lang="en">

<style type="text/css">
        #no-fouc { opacity: 0; }
</style>

在关闭正文标记之前,将此位添加到脚本的最底部。

$("#no-fouc").delay(250).animate({"opacity": "1"}, 250);

适用于我测试过的所有浏览器和媒体,似乎也解决了Google PageSpeed的问题。如果你做像set display:none这样的事情,他们就不喜欢它,所以这是我能提出的最接近的事情。

答案 1 :(得分:0)

我会删除display:none样式,一旦所有CSS加载完毕,就像这样

window.onload = function(){
    var resources = [
        { url: "//maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css", type: "css"},
        { url: "/css/main-min.css", type: "css"},

        { url: "//ajax.googleapis.com/ajax/libs/jquery/2.1.4/jquery.min.js", type: "js"},
        { url: "//maxcdn.bootstrapcdn.com/bootstrap/3.3.5/js/bootstrap.min.js", type: "js"},
        { url: "/js/main-min.js", type: "js"}
    ];
    var head = document.getElementsByTagName("head")[0];
    var cssToLoad = 0;
    var loadOrError = function (e) {
        cssToLoad -= 1;
        if (cssToLoad < 0) { // prevent early trigger
            document.body.style.removeProperty('display');
        }
    };
    resource.forEach(function(resource) {
        var element;

        if (resource.type == "js") {
            element = document.createElement('script');
            element.setAttribute("type", "text/javascript");
            element.setAttribute("src", resource.url);
        } else if (resource.type == "css") {
            cssToLoad += 1;
            element = document.createElement("link");
            element.setAttribute("rel", "stylesheet");
            element.setAttribute("type", "text/css");
            element.setAttribute("href", resource.url);
            element.addEventListener('load', loadOrError);
            element.addEventListener('error', loadOrError);
        }
        if (typeof element != "undefined") {
            head.appendChild(element);
        }
    });
    loadOrError(); // end prevent early trigger
};