我想根据我点击的 DIV 的 url 在点击时更改背景图片
我的逻辑如下:
当用户点击 div 时
{
If (Background URL = x)
{
change background url property to y
}
else
{
change background url property to x
}
}
这是我使用的代码
HTML:
<div id="AccordionContainer" class="AccordionContainer">
<div onclick="runAccordion(1);changeArrow(1)">
<div class="AccordionTitle" id="Accordion1Title" onselectstart="return false;" onclick="changeArrow(1);" >
Instructions
</div>
</div>
<div id="Accordion1Content" class="AccordionContent">
<p>Enter in your search parameters</p>
</div>
<div onclick="runAccordion(2);">
<div class="AccordionTitle" id="Accordion2Title" onselectstart="return false;" onclick="changeArrow(2);" >
Colour
</div>
</div>
<div id="Accordion2Content" class="AccordionContent">
[wpv-control field="cultivar-category" type="checkboxes" values="Dark Red" url_param="cultivar-category"]
</div>
</div>
Javascript
function changeArrow(index)
{
var arrowID = "Accordion" + index + "Title";
var img = document.getElementById(arrowID),
style = img.currentStyle || window.getComputedStyle(img, false),
bi = style.backgroundImage.slice(4, -1);
if (bi = "http://www.hadecobulbs.com/wp-content/themes/blankslate/img/accordian-title.png")
{
document.getElementById(arrowID).style.background="url(http://www.hadecobulbs.com/wp-content/themes/blankslate/img/accordian-title-up.png) no-repeat scroll 0 0 transparent";
}
else
{
document.getElementById(arrowID).style.background="url(http://www.hadecobulbs.com/wp-content/themes/blankslate/img/accordian-title.png) no-repeat scroll 0 0 transparent";
}
}
但是,当我单击 Accordion(index)Title Div 时,图像会在第一次单击时发生变化,但当我再次单击时,图像不会变回。为什么会这样?我在这里想念什么?