javascript - jQuery toggleClass 如果不工作

Question

我无法在 if-else 条件下运行 jQuery toggleClass()。

我的 HTML 代码是:

<ul>
  <li class="firstLevel">
   <a href="#main_cat_01">MAIN CATEGORY #1</a>
     <ul class="dijete">
       <li>
          <a href="#subt_cat_01">SUB CATEGORY #1</a>
        </li>
     </ul>
   </li>
   <li class="firstLevel">
   <a href="#main_cat_02">MAIN CATEGORY #2</a>
     <ul class="dijete">
       <li>
          <a href="#subt_cat_02_01">SUB CATEGORY #1</a>
        </li>
     </ul>
   </li>
</ul>

我的 CSS 代码是:

ul.dijete {
    display: none;
}

.vidimte{
    display: block;
}

我的 JavaScript 代码是:

    var $j = jQuery.noConflict();
    $j(function() {
        $j('li.firstLevel').click(function(){
            if($j(this).children("ul.dijete").hasClass("vidimte")){
                $j(this).children("ul.dijete").toggleClass('vidimte'); //visible
                $j(this).find("ul.dijete").prev("li.firstLevel a").css({
                    "background-image":'url(URL_TO_THE_IMAGE_OPEN)',
                    "background-position":"right center",
                    "display":"block",
                    "background-repeat":"no-repeat"
                });
            }else{ // else add image close and display none
                $j(this).find('ul.vidimte').prev("li.firstLevel a").css({
                    "background-image":'url(URL_TO_THE_IMAGE_CLOSE)',
                    "background-position":"right center",
                    "display":"block",
                    "background-repeat":"no-repeat"
                });
            }
        });
    });

我无法让它工作。

我必须为此使用 on.('click) 方法吗？

有什么想法吗？

感谢您的帮助或任何信息!

Answer 1

明白了!感谢分享想法!

解决方案对我有用:

var $j = jQuery.noConflict();

$j(function() {
    $j('li.firstLevel').on('click', function() {
        if($j(this).closest("li").children("ul.dijete").length){
            $j(this).children("ul.dijete").toggleClass('vidimte');


            if($j(this).children("ul.dijete").hasClass("vidimte")){
                $j(this).find("ul.dijete").prev("li.firstLevel a").css({
                    "background-image":'url(http://www.v-tac.hr/wp-content/themes/vtac/images/stories/customfilters/open.png)',
                    "background-position":"right center",
                    "display":"block",
                    "background-repeat":"no-repeat"
                });
            }else{
                $j(this).find('ul.dijete').prev("li.firstLevel a").css({
                    "background-image":'url(http://www.v-tac.hr/wp-content/themes/vtac/images/stories/customfilters/closed.png)',
                    "background-position":"right center",
                    "display":"block",
                    "background-repeat":"no-repeat"
                });
            }
        }
    });
   });