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的Javascript:用點表示每個圖像創建一個滑塊,每個都不返回圖像元素?
var images = $('#slideshow').children();
var dot_holder = $('#slider_dots');
/* Create the dots*/
images.each(function(index,item){
if(item.hasClass('active')){
dot_holder.append('<img src="Images/dot_solid.png" alt=""/>');
}else{
dot_holder.append('<img src="Images/dot_fade.png" alt=""/>');
}
});
HTML:
<div id="slideshow">
<img src="Images/image_1.jpg" alt="image 1" class="active"/>
<img src="Images/image_2.jpg" alt="image 2"/>
<img src="Images/image_3.jpg" alt="image 3"/>
<img src="Images/image_4.jpg" alt="image 4"/>
<img src="Images/image_5.jpg" alt="image 5"/>
<img src="Images/image_6.jpg" alt="image 6"/>
<img src="Images/image_7.jpg" alt="image 7"/>
</div>
從本質上講,我想點是立體表示活動圖像,但我得到一個錯誤說遺漏的類型錯誤:對象#有沒有方法「hasClass '