使用jquery从嵌套div中获取id

I don't know how to put this. This has got a bit messy. I couldn't use the write words to ask the question. Here is my code:

我不知道怎么说这个。这有点乱。我不能用写字来问这个问题。这是我的代码:

<div id="addfieldcontainerdropdown">
    <div id="addDropdownfield">
        <div id="div0">
            <select name="0" style="margin: 20px" id="0">
                <option value="1">1</option>
                <option value="2">2</option>
            </select>
            <input style="margin: 7px" id="1" placeholder="Value" onkeyup="check_if_value_set(this); return false;"
                   type="text">

            <span style="margin: 7px;cursor: pointer;" onclick="remove_fields(this);return false;"><iclass="fa fa-times"></i></span>
        </div>

        <div id="div2">
            <select name="2" style="margin: 20px" id="2">
                <option value="1">1</option>
                <option value="2">2</option>
            </select>
            <input style="margin: 7px" id="3" placeholder="Value" onkeyup="check_if_value_set(this); return false;"
                   type="text">

            <span style="margin: 7px;cursor: pointer;" onclick="remove_fields(this);return false;"><i class="fa fa-times"></i></span>
        </div>

        <div id="div4">
            <select name="4" style="margin: 20px" id="4">
                <option value="1">1</option>
                <option value="2">2</option>
            </select>
            <input style="margin: 7px" id="5" placeholder="Value" onkeyup="check_if_value_set(this); return false;"
                   type="text">
            <span style="margin: 7px;cursor: pointer;" onclick="remove_fields(this);return false;"><i class="fa fa-times"></i></span>
        </div>

    </div>

    <a href="javascript:void(0)" onclick="show_new_text_field(this);event.preventDefault();return false;" style="cursor:pointer">

    <span id="add_new_span" class="addnew" style="float: none;margin-left: 1%;"><i class="fa fa-plus fa-fw"></i>Add New Field</span>

    </a>
</div>

You can see there is a function named "show_new_text_field(this)" at the bottom of the code. Using this function, i need to get the id of say, div4 or select box of id 4. How can this be done ? I tried using prent() and closest(). Nothing worked. Any type of suggestions would be appreciated. Thanks in advance !!

您可以在代码底部看到名为“show_new_text_field(this)”的函数。使用这个函数,我需要获得id,div4或id的选择框4的ID。如何做到这一点?我尝试使用prent()和nearest()。没有任何效果。任何类型的建议将不胜感激。提前致谢 !!

1 个解决方案

#1

Something like this?

像这样的东西?

var lastDiv = $("[id^=div]").last(); //Get Last div whose ID begins with "div"
var lastDivId = lastDiv.attr('id'); //Get ID of that div
var firstSelect = lastDiv.find('select').first(); //Get the first 'select' of that div
var firstSelectId = firstSelect.attr('id'); //Get that select's ID

console.log("Last Div: " + lastDivId); // "Last Div: div4"
console.log("First Select in " + lastDivId + ": " + firstSelectId); //"First Select in div4: 4"

In the event your div won't always start with "div", you could just select the last child div of your parent (addDropdownfield) by doing this:

如果你的div不总是以“div”开头,你可以通过这样做选择你父母的最后一个子div(addDropdownfield):

var lastDiv = $("#addDropdownfield div").last(); //Get all children divs of addDropdownfield - from that list, just the last one

#1