[英]Get ID from parent div that has display:none in JavaScript
我想獲取特定元素的父元素的ID。 使用display:none隱藏了父元素,因為我需要它不獲取空間。
我已經編寫了一個Javascript,可根據Parents類從元素的父級獲取ID。
function getParentDivId(divName, classNameParent) {
do {
divName = divName.parentNode; // get parentdiv from initial div
if (divName.className == classNameParent) { // check if parent div belongs to specified class
return divName.id; // return the id of the parent div
}
} while (divName.parentNode) { // while div has parent do above function
return null;
}
}
這是HTML代碼
<div class="row" id="row1">
<!-- code for a single main category with several subcategories -->
<!-- all subcategories can be hidden by setting the subcategories display property to none-->
<!-- all subcategories can be shown by setting the categories display property to inline-block-->
<div class="categories" id="calgemeen">
<div class="item" id="algemeen">algemeen
<div class="press" onclick="goSubcategory(this, contact);"></div>
</div>
</div>
<div class="subcategories" id="scalgemeen">
<!--subcategories can be shown using item, note the weird -->
<!--syntax ><div this is necessary to remove the whitespace between inline-blocks-->
<div class="subcategory" id="info"><div class="item">info</div></div
><div class="subcategory" id="contact"><div class="item">contact
<div class="press" onclick="goSubcategory(this, spaans);"></div></div></div
><div class="subcategory" id="route"><div class="item">route</div></div>
</div>
</div>
<div class="row" id="row2">
<div class="categories" id="chuisartsen">
<div class="item">huisartsen
</div>
</div>
<div class="subcategories" id="schuisartsen">
<div class="subcategory" id="spaans"><div class="item">spaans</div></div
><div class="subcategory" id="engels"><div class="item">stelten</div></div
><div class="subcategory" id="frans"><div class="item">willemsen</div></div>
</div>
</div>
返回有關ID的信息:
<script type="text/javascript">
function goSubcategory(current, subcategory) {
var sc_current = getParentDivId(current, "subcategories");
var sc_target = getParentDivId(subcategory, "subcategories");
console.log("current: " + sc_current);
console.log("target: " + sc_target);
}
</script>
當onclick =“ goSubcategory(this,contact)時,這將在控制台中返回
current: null
target: scalgemeen
這是正確的,因為“ this”在子類別類中沒有父級,而“ contact”在子類別類中有父級,id ='scalgemeen'
但是,onclick =“ goSubcategory(this,spaans)在控制台中返回
current: scalgemeen
target: scalgemeen
這是不正確的,因為“ spaans”應該有一個id ='schuisartsen'的父母
請注意,當選擇onclick =“ goSubcategory(this,spaans)時,所有具有類類別的元素都將顯示:none以及元素row2。
是一種允許我獲取正確目標ID的方法。
我認為這是您的問題。 do ... while循環應類似於:
do {
//do something
}
while(conditon==true);
下面也是如此。 如果您在其他地方沒有任何錯誤,則可能對您有用。
function getParentDivId(divName, classNameParent) {
do {
divName = divName.parentNode; // get parentdiv from initial div
if (divName.className == classNameParent) { // check if parent div belongs to specified class
return divName.id; // return the id of the parent div
}
} while (divName.parentNode); // while div has parent do above function
}
如果要中斷循環,請使用關鍵字break;
。
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