Jquery - Get attribute value of closest class
Question
I am trying to grab the attribute value from the closest element with the class specified but keep getting back undefined.
Below is my HTML and my code, I am not too sure what am doing wrong to get back undefined.
HTML
<body>
<form action="/update" id="formwrite">
<div class="panel-group" id="accordion" role="tablist" aria-multiselectable="true">
<div class="panel">
<div class="panel-heading" role="tab" id="headingOne">
<h4 class="panel-title va-middle">Account Settings
<img src='../images/colopen.svg' data-swap='../images/coll.svg' class="panel-icon collapse-icon" role="button" data-toggle="collapse" data-parent="#accordion" href="#collaspeOne" aria-expanded="true" aria-controls="collaspeOne">
</h4>
</div>
<div id="collaspeOne" class="panel-collapse collapse" role="tabpanel" aria-labelledby="headingOne">
<div class="panel-default">
<div class="row fieldpos">
<fieldset class="form-group textwide">
<label for="email">Email</label>
<input type="email" class="form-control" id="email" placeholder="Enter Email" required>
</fieldset>
</div>
</div>
</div>
</div>
<div class="panel">
<div class="panel-heading" role="tab" id="headingTwo">
<h4 class="panel-title va-middle">Other Settings
<img src='../images/colopen.svg' data-swap='../images/coll.svg' class="panel-icon collapse-icon" role="button" data-toggle="collapse" data-parent="#accordion" href="#collaspeTwo" aria-expanded="true" aria-controls="collaspeTwo">
</h4>
</div>
<div id="collaspeTwo" class="panel-collapse collapse" role="tabpanel" aria-labelledby="headingTwo">
<div class="panel-default">
<div class="row fieldpos">
<fieldset class="form-group textwide">
<label for="group">Test</label>
<input type="text" class="form-control " id="group" placeholder="test" required>
</fieldset>
</div>
</div>
</div>
</div>
</div>
<button type="submit" class="btn btn-success form-control savechanges">Save Changes</button>
<button class="btn btn-success form-control test">Call Function</button>
</form>
</body>
JS
$(document).on("click", ".test", function (){
$("input[required]").each(function(){
var inputval = $(this).val();
var collaspe = $(this).closest(".collapse-icon").attr("aria-expanded");
console.log(collaspe);
if(!inputval){
console.log("Required Empty");
$(".collapse-icon").trigger("click");
} else {
console.log("Required has value");;
}
});
});
Any suggestions?
EDIT: JSFiddle
3 answers
solution1
4 ACCPTED 2016-09-26 15:34:19
$.closest traverses up the DOM searching only ancestors, it will not search for the "literal" closest element. Your .collapse-icon don't appear to be direct parents, but rather are children of the .panel-heading elements (which are parents). So the solution would be $(this).closest('.panel-heading').find('.collapse-icon')
UPDATE : I apologize, in my answer I mispoke. It should be .closest('.panel').find('.panel-heading .collapse-icon') since .panel-heading is a sibling of the or input's parent. So you need the .panel-body 's parent and then find it's heading collapse icon.
solution2
0 2016-09-26 15:45:07
As already explained closest only search in direct ancestors.
Here is a working fiddle - https://jsfiddle.net/z5wbxzzo/2/
$(document).on("click", ".test", function (){
$("input[required]").each(function(){
var inputval = $(this).val();
var collaspe = $(this).closest(".panel-collapse").siblings(".panel-heading").find(".collapse-icon").attr("aria-expanded");
console.log(inputval, collaspe);
if(!inputval){
console.log("Required Empty");
$(".collapse-icon").trigger("click");
} else {
console.log("Required has value");;
}
});
});
hope this helps
solution3
0 2016-09-26 15:49:50
closest() return the first ancestor matching the specified selector.
.collapse-icon is not an ancestor of input[required]
As I guess there is more than one .panel element in a .panel-group you will have to identify first the top .panel element (by an id or a specific class name or whatever) next dive into it to find the .collapse-icon
html code
<div class="panel panel-container">
<div class="panel-heading" role="tab" id="headingOne">
<h4 class="panel-title va-middle">Account Settings
<img src='../images/colopen.svg' data-swap='../images/coll.svg' class="panel-icon collapse-icon" role="button" data-toggle="collapse" data-parent="#accordion" href="#collaspeOne" aria-expanded="true" aria-controls="collaspeOne">
</h4>
</div>
...
js code
$(this).closest('.panel-container').find('.collapse-icon')
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