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I am trying to get the index of an element using jQuery to send to a PHP script.
Here is my XHTML
<form action="/accreditation/questions/" method="post" id="questions-form">
<fieldset id="question-0">
<legend>Question</legend>
<h3>What colour is grass?</h3>
<ul>
<li>
<input type="radio" name="answer[0]" value="0" id="radio-0-0" />
<label for="radio-0-0">Green</label>
</li>
<li>
<input type="radio" name="answer[0]" value="1" id="radio-0-1" />
<label for="radio-0-1">Red</label>
</li>
<li>
<input type="radio" name="answer[0]" value="2" id="radio-0-2" />
<label for="radio-0-2">Orange</label>
</li>
</ul>
</fieldset>
<fieldset id="question-1">
<legend>Question</legend>
<h3>how old is alex</h3>
<ul>
<li>
<input type="radio" name="answer[1]" value="0" id="radio-1-0" />
<label for="radio-1-0">21</label>
</li>
<li>
<input type="radio" name="answer[1]" value="1" id="radio-1-1" />
<label for="radio-1-1">11</label>
</li>
<li>
<input type="radio" name="answer[1]" value="2" id="radio-1-2" />
<label for="radio-1-2">23</label>
</li>
</ul>
</fieldset>
</form>
I need to get the index of the fieldset elements. I am currently using this each iterator (which I'd like not to change because it has a lot of other functions inside it).
$('#questions-form ul li').each(function() {
qIndex = $('fieldset').index($('fieldset', $(this).parent()))
});
I'd like qIndex to be the index of fieldset relative to the form. For example, in this case I should have it equal to 0 and 1 (although there would be 6 values because it's looping through the list elements).
I have played around for a while and have been unable to get the correct index. I keep getting not found (-1).
If it helps, here is the code I'm using to get the list item's index relative to it's containing ul element.
index = $('li', $(this).parent()).index(this);
298
The :eq() selector selects an element with a specific index number. The index numbers start at 0, so the first element will have the index number 0 (not 1). This is mostly used together with another selector to select a specifically indexed element in a group (like in the example above).
JavaScript Array findIndex() The findIndex() method executes a function for each array element. The findIndex() method returns the index (position) of the first element that passes a test. The findIndex() method returns -1 if no match is found.
The indexOf() method returns the position of the first occurrence of a value in a string. The indexOf() method returns -1 if the value is not found. The indexOf() method is case sensitive.
In the first formulation listed above, jQuery() — which can also be written as $() — searches through the DOM for any elements that match the provided selector and creates a new jQuery object that references these elements: 1. $( "div. foo" );
The LI's parent is UL, not the fieldset.
I think this will set qIndex for you:
qIndex = $('fieldset').index($(this).parents('fieldset'));
You can also get the index using:
$("form fieldset").each(function(I) {
console.log("fieldset index"+ I);
});
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