jquery slidetoggle图像交换(jquery slidetoggle image swap)

 我试图让slideToggle根据div是否展开或折叠来交换图像。 我让它以一种方式工作，它将图像从加号变为零，但它只适用于一个div而且我有多个，它只能工作一次。 它没有切换。 
 
 这是jQuery： 
 
$(".content").toggle(1);
$(".expand").click(function () {
    $(this).next(".content").slideToggle(400);

    if ($(".image1").attr('src', "../nathan/plus.png")) {
        $(".image1").attr(
            'src', 
            $(".image1").attr('src').replace('plus', 'minus')
        );
    } else {
        $(".image1").attr(
            'src', 
            $(".image1").attr('src').replace('minus', 'plus')
        );
    }
});
});
 
 IndexOf（）有效，但是如果我要复制div，则在单击一个时它们都会改变。 这是HTML： 
 
<div class="list">
<h2 class="expand">Title1<img class="image1" src="../nathan/plus.png"></h2>
<div class="content">
</div>
</div>

<div class="list">
<h2 class="expand">Title2<img class="image1" src="../nathan/plus.png"></h2>
<div class="content">
</div>
</div>

I'm trying to get slideToggle to swap images based on if a div is expanded or collapsed. I have it working one way, where it will change an image from plus to minus, but it only works on one div and I have multiple and it only works once. It doesn't toggle.
 
Here is the jQuery:
 
$(".content").toggle(1);
$(".expand").click(function () {
    $(this).next(".content").slideToggle(400);

    if ($(".image1").attr('src', "../nathan/plus.png")) {
        $(".image1").attr(
            'src', 
            $(".image1").attr('src').replace('plus', 'minus')
        );
    } else {
        $(".image1").attr(
            'src', 
            $(".image1").attr('src').replace('minus', 'plus')
        );
    }
});
});
 
The IndexOf() works, but if I was to duplicate the divs they all change when one is clicked. Here is the HTML:
 
<div class="list">
<h2 class="expand">Title1<img class="image1" src="../nathan/plus.png"></h2>
<div class="content">
</div>
</div>

<div class="list">
<h2 class="expand">Title2<img class="image1" src="../nathan/plus.png"></h2>
<div class="content">
</div>
</div>

原文：https://stackoverflow.com/questions/12273179