Custom jQuery - add data-filter to <select><option>

Question

I need make a modification to a custom jQuery script.

I've got a custom jQuery script which does the following:

• it converts a standard HTML un-ordered list into a <select> dropdown
• it converts the list-items to clickable <options>
• the <select> is hidden on desktop and only shown on mobile
• all of this works great and here's a screenshot:

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All is working well, however I need an additional attribute to be added to each <option>

• Notice how each HTML list item has (data-filter=".term-x")
• I need this to also be added to each <option> in the <select> dropdown

---

Here's what the final HTML output looks like on the page after script has run and done it's thing:

<div id="horizontal_nav">
<ul class="sub-menu">
    <li><a href="http://localhost.local/site/horizontal-nav/" data-filter=".term-3"><span><strong>Horizontal Nav</strong></span></a></li>
    <li><a href="http://localhost.local/site/full-width/" data-filter=".term-4"><span><strong>Full Width</strong></span></a></li>
    <li><a href="http://localhost.local/site/blog/" data-filter=".term-3"><span><strong>Blog</strong></span></a></li>
    <li><a href="http://localhost.local/site/cart/" data-filter=".term-4"><span><strong>Cart</strong></span></a></li>
    <li><a href="http://localhost.local/site/checkout/" data-filter=".term-5"><span><strong>Checkout</strong></span></a></li>
    <li><a href="http://localhost.local/site/features/" data-filter=".term-5"><span><strong>Features</strong></span></a></li>
</ul>
<select>
    <option selected="selected" value="">More in this section...</option>
    <option value="http://localhost.local/site/horizontal-nav/">Horizontal Nav</option>
    <option value="http://localhost.local/site/full-width/">Full Width</option>
    <option value="http://localhost.local/site/blog/">Blog</option>
    <option value="http://localhost.local/site/cart/">Cart</option>
    <option value="http://localhost.local/site/checkout/">Checkout</option>
    <option value="http://localhost.local/site/features/">Features</option>
</select>
</div>

Here's the jQuery that creates the <select> and needs the modification mentioned above

    jQuery(document).ready(function () {

    jQuery("<select />").appendTo("#horizontal_nav");
    jQuery("<option />", {
        "selected": "selected",
        "value": "",
        "text": php_data.mobile_sub_menu_text
    }).appendTo("#horizontal_nav select");
    jQuery("#horizontal_nav a").each(function() {
        var el = jQuery(this);
        jQuery("<option />", {
            "value": el.attr("href"),
            "text": el.text()
        }).appendTo("#horizontal_nav select")
    });
    jQuery("#horizontal_nav select").change(function() {
        window.location = jQuery(this).find("option:selected").val()
    })
};

});

Answer 1

 jQuery(document).ready(function() { jQuery("<select />").appendTo("#horizontal_nav"); jQuery("<option />", { "selected": "selected", "value": "" }).appendTo("#horizontal_nav select"); jQuery("#horizontal_nav a").each(function() { var el = jQuery(this); jQuery("<option />", { "value": el.attr("href"), "text": el.text(), "data-filter": el.attr('data-filter')//add it here }).appendTo("#horizontal_nav select") }); jQuery("#horizontal_nav select").change(function() { window.location = jQuery(this).find("option:selected").val() }) }); 

 <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> <div id="horizontal_nav"> <ul class="sub-menu"> <li><a href="http://localhost.local/site/horizontal-nav/" data-filter=".term-3"><span><strong>Horizontal Nav</strong></span></a> </li> <li><a href="http://localhost.local/site/full-width/" data-filter=".term-4"><span><strong>Full Width</strong></span></a> </li> <li><a href="http://localhost.local/site/blog/" data-filter=".term-3"><span><strong>Blog</strong></span></a> </li> <li><a href="http://localhost.local/site/cart/" data-filter=".term-4"><span><strong>Cart</strong></span></a> </li> <li><a href="http://localhost.local/site/checkout/" data-filter=".term-5"><span><strong>Checkout</strong></span></a> </li> <li><a href="http://localhost.local/site/features/" data-filter=".term-5"><span><strong>Features</strong></span></a> </li> </ul> </div> 

add an .attr() name it data-filter then append the data-filter from the ul