jquery – 如果屏幕窄于1024px,则隐藏DIV

我发现(从这个问题 – Hide div if screen is smaller than a certain width)这段编码

$(document).ready(function () {

    if (screen.width < 1024) {
        $("#floatdiv").hide();
    }
    else {

        $("#floatdiv").show();
    }

});

唯一的问题是,我似乎无法让代码工作,我只需要为IE工作的代码,我将使用Media Queries用于其他(较新的)浏览器.
关于我哪里出错的任何提示/提示？

到目前为止我有
< div id =“floatdiv”>

然后在那个div的末尾(哪里关闭)我有

<!--[if lt IE 9]>
<script type="text/javascript" src="http://dl.dropBox.com/u/17087195/website/sidebar_size.js"></script>
<![endif]-->

在我的标题中我有
< script type ='text / javascript'src ='http：//www.itsdaniel0.com/wp-includes/js/jquery/jquery.js？ver = 1.4.4'>< / script>

我仍然无法使代码工作(在IE8中测试)
我到底哪里出错了？

更新我确实有另一条jQuery链接,这可能导致问题吗？以下是完整的编码

<div id="floatdiv">

<div class="floating-menu">

<iframe src="http://www.facebook.com/plugins/like.PHP?href=http%3A%2F%2Fwww.itsdaniel0.com%2F2011%2F03%2Funicorns-are-cool%2F&amp;layout=Box_count&amp;show_faces=true&amp;width=55&amp;action=like&amp;colorscheme=light&amp;height=65" scrolling="no" frameborder="0" style="border:none; overflow:hidden; width:55px; height:65px;" allowTransparency="true"></iframe>

<br /><br /><a href="http://twitter.com/share?url=http%3A%2F%2Fid0.me%2Fj0&amp;counturl=http://www.itsdaniel0.com/2011/03/unicorns-are-cool/" class="twitter-share-button" data-text="Unicorns Are Cool" data-count="vertical" data-via="itsdaniel0 #itsdaniel0">Tweet</a><script type="text/javascript" src="http://platform.twitter.com/widgets.js"></script>

<br /><br />

<script src="http://widgets.fbshare.me/files/fbshare.js"></script>

</div>

</div>

<script type="text/javascript" src="http://dl.dropBox.com/u/17087195/website/sidebar.js"></script>

<!--[if lt IE 9]>

<script type="text/javascript" src="http://dl.dropBox.com/u/17087195/website/sidebar_size.js"></script>

<![endif]-->

错误信息

Webpage error details

User Agent: Mozilla/4.0 (compatible;
MSIE 7.0; Windows NT 5.1; Trident/4.0;
chromeframe/10.0.648.133; .NET CLR
1.1.4322; .NET CLR 2.0.50727; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729; OfficeLiveConnector.1.5;
OfficeLivePatch.1.3; .NET4.0C;
.NET4.0E; InfoPath.2) Timestamp: Sat,
12 Mar 2011 11:31:32 UTC

Message: Expected identifier,string
or number Line: 140 Char: 1 Code: 0
URI:
www.itsdaniel0.com/2011/03/unicorns-are-cool/

Message: Object doesn’t support this
property or method Line: 16 Char: 1
Code: 0 URI:
dl.dropBox.com/u/17087195/website/sidebar_size.js

Message: ‘twttr.anywhere._instances’
is null or not an object Line: 1 Char:
5207 Code: 0 URI:
platform.twitter.com/anywhere.js?id=6vIPELyEeU5vcSc3c0Q5w&v=1

Message: ‘twttr.anywhere._instances’
is null or not an object Line: 1 Char:
5207 Code: 0 URI:
platform.twitter.com/anywhere.js?id=6vIPELyEeU5vcSc3c0Q5w&v=1

由于“低代表”错误,从网址中删除了http

解决方法

使用JQUERY的旧答案：

//the function to hide the div
function hideDiv(){

    if ($(window).width() < 1024) {

            $("#floatdiv").fadeOut("slow");

    }else{

        $("#floatdiv").fadeIn("slow");

    }

}

//run on document load and on window resize
$(document).ready(function () {

    //on load
    hideDiv();

    //on resize
    $(window).resize(function(){
        hideDiv();
    });

});

编辑：请注意,现在有更多的跨浏览器支持css3媒体查询,使用这些而不是JavaScript更有效.

使用CSS.

/* always assume on smaller screen first */

#floatdiv {
    display:none;
}

/* if screen size gets wider than 1024 */

@media screen and (min-width:1024px){
    #floatdiv {
        display:block;
    }
}

请注意,在大多数现代浏览器中,您还可以使用window.matchMedia在javascript中运行媒体查询

if(window.matchMedia("(min-width:1024px)").matches){
    console.log("window is greater than 1024px wide");
}

原文地址：https://www.jb51.cc/jquery/181034.html