使用手风琴菜单进行图像演示 [英] Image presentation using an accordion menu

问题描述

我有一个像这样的菜单:

<ul class="leve1">
    <li>
        <div class="some">
            <a href="images/image1.jpg">image1</a>
            <a href="images/image2.jpg">image2</a>
            <a href="images/image3.jpg">image3</a>
            ...
        </div>
    </li>
    ...
</ul>

并且我在html的另一个位置也有一个div

<div id="dest"></div>

我想单击链接，并使图像显示在div中.我已经尝试过一些

$(document).ready(function () {
    $("div.some a").click(function (event) {
        event.preventDefault();
        $("div#dest").html($("<img>").attr("src", this.href).fadeIn(1000));
    });
});

但是它什么也没做. div保持空白.

我已经搜索了这些论坛，但找不到适当的答案.

更新

我也有一些JavaScript可以使上面的菜单变成一个倒塌的菜单.这些指令(隐藏，显示和切换-一堆！)是否可以与此代码相冲突??

解决方案

您在添加图像后立即调用了fadeIn:如果图像加载时间太长怎么办?它显示在淡入淡出的中间或淡入淡出之后: jsfiddle.net/Xt5La/

您可以在图像上使用加载处理程序，请参见以下小提琴: jsfiddle.net/UNqJh/.

var img = new Image();
img.onload = loaded;
img.src = url;

function loaded() { // load handler }

在旁注中，它也可能有助于查看图像是否实际加载. 但更简单的是，您的控制台怎么说?图像是否已添加到DOM?

I have a menu like this:

<ul class="leve1">
    <li>
        <div class="some">
            <a href="images/image1.jpg">image1</a>
            <a href="images/image2.jpg">image2</a>
            <a href="images/image3.jpg">image3</a>
            ...
        </div>
    </li>
    ...
</ul>

and I also have a div in another location in my html

<div id="dest"></div>

I want to click in the link and make the image appear in the div. I've tried some codelines like

$(document).ready(function () {
    $("div.some a").click(function (event) {
        event.preventDefault();
        $("div#dest").html($("<img>").attr("src", this.href).fadeIn(1000));
    });
});

but it doesn't do anything. The div remains blank.

I've searched these forums but couldn't find an adequate answer.

Update

I also have some javascript to make the above menu a colapsing one. Can these intructions (hide, show and toggle - a bunch of them!) be colliding with this code???

解决方案

Your calling fadeIn right after adding the image : what if the image takes too much time to load ? It gets displayed in the middle of the fade or after the fade is over : jsfiddle.net/Xt5La/

You can use a load handler on images, see this fiddle : jsfiddle.net/UNqJh/.

var img = new Image();
img.onload = loaded;
img.src = url;

function loaded() { // load handler }

On a sidenote it could also help to see if image is actually loaded. But simpler is, what does your console say ? Is the image added to the DOM ?

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