我想在下一个元素上应用一些设计。但我的问题是我收到了这个错误:
Error: Syntax error, unrecognized expression: [object Object] > label
这是我的选择:
浏览<ul class="list-unstyled">
<li>
<input type="radio" id="cat-1" class="category_select" name="category_type" data-category-type="1" value="all_product" checked="checked" />
<label for="cat-1"><span></span>All</label>
</li>
<li>
<input type="radio" id="cat-2" class="category_select" name="category_type" data-category-type="2" value="japanese_tea" />
<label for="cat-2"><span></span>Japanese Tea</label>
</li>
<li>
<input type="radio" id="cat-3" class="category_select" name="category_type" data-category-type="3" value="black_vinegar" />
<label for="cat-3"><span></span>Black Vinegar</label>
</li>
<li>
<input type="radio" id="cat-4" class="category_select" name="category_type" data-category-type="4" value="food" />
<label for="cat-4"><span></span>Food</label>
</li>
<li>
<input type="radio" id="cat-5" class="category_select" name="category_type" data-category-type="5" value="cosmetic_health" />
<label for="cat-5"><span></span>Cosmetic / Health</label>
</li>
<li>
<input type="radio" id="cat-6" class="category_select" name="category_type" date-category-type="6" value="others" />
<label for="cat-6"><span></span>Others</label>
</li>
</ul>
这是我的JS:
$('.category_select').on('change', function() {
var cat = $(this);
var category_type = $(this).data('category-type');
$(cat + ' > label').css({'color':'red'}); //wont apply some css why?
});
你能帮我解决这个问题吗?
答案 0 :(得分:2)
您需要使用.next()遍历方法来获取元素的下一个兄弟
在您的代码中cat
是一个jQuery对象,所以当在字符串连接中使用时,您的选择器变为[object Object] > label
$('.category_select').on('change', function() {
var cat = $(this);
var category_type = $(this).data('category-type');
cat.next('label').css({
'color': 'red'
}); //wont apply some css why?
});
&#13;
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<ul class="list-unstyled">
<li>
<input type="radio" id="cat-1" class="category_select" name="category_type" data-category-type="1" value="all_product" checked="checked" />
<label for="cat-1"><span></span>All</label>
</li>
<li>
<input type="radio" id="cat-2" class="category_select" name="category_type" data-category-type="2" value="japanese_tea" />
<label for="cat-2"><span></span>Japanese Tea</label>
</li>
<li>
<input type="radio" id="cat-3" class="category_select" name="category_type" data-category-type="3" value="black_vinegar" />
<label for="cat-3"><span></span>Black Vinegar</label>
</li>
<li>
<input type="radio" id="cat-4" class="category_select" name="category_type" data-category-type="4" value="food" />
<label for="cat-4"><span></span>Food</label>
</li>
<li>
<input type="radio" id="cat-5" class="category_select" name="category_type" data-category-type="5" value="cosmetic_health" />
<label for="cat-5"><span></span>Cosmetic / Health</label>
</li>
<li>
<input type="radio" id="cat-6" class="category_select" name="category_type" date-category-type="6" value="others" />
<label for="cat-6"><span></span>Others</label>
</li>
</ul>
&#13;
答案 1 :(得分:0)
您可以使用所选输入框的label
属性直接选择下一个id
$('.category_select').on('change', function() {
var cat = this.id;
var category_type = $(this).data('category-type');
$("label").css({'color':'black'}) // Remove red color from previously selected item
$("label[for='"+cat+"']").css({'color':'red'}); // Apply red color on selected item
});
答案 2 :(得分:0)
你需要使用.next()选择器来选择下一个元素,而不是$(cat +'&gt; label')
$('.category_select').on('change', function() {
var cat = $(this);
var category_type = $(this).data('category-type');
cat.next('label').css({'color':'red'}); //syntax for selecting next in js
});
希望这能帮到你吗?