What is the reason for the successful addition of a list item, using dynamic methods, in Chrome and Firefox while encountering issues in

I have encountered an issue with my jQuery code that works perfectly fine in Firefox and Chrome but fails to work in Internet Explorer 8 (I haven't tested it on other versions of IE). It is important to note that Internet Explorer is running in standards mode.

The main purpose of the following code is to dynamically create a new list item. The content of this list item is set to be the same as a form located within a hidden section element. However, when using IE, the section element becomes visible, and the list item is added to the list, but it appears empty.

I am wondering what could possibly be wrong with this code specifically in IE?

$('ul.elementlist').on('click', '.add-element-icon', function (event) {
    var plusIcon = $(this);
    plusIcon.hide();

    var parentLi = plusIcon.parent();

    var before = parentLi.attr('id');

    var after = parentLi.next().attr('id');
    if (typeof after === "undefined") {
        after = 'none';
    }

    var li = $('<li class="element">').html($('section.add-element').html());
    $('input[name="elementBefore"]', li).val(before);
    $('input[name="elementAfter"]', li).val(after);
    li.insertAfter(parentLi);
});

Answer №1

If you are utilizing the section element and an HTML5 doctype, such as <!DOCTYPE html>, there are some steps you can take to optimize your markup for compatibility with older versions of Internet Explorer.

To begin, make sure that Internet Explorer is running in IE8 Standards compatibility mode*. You can achieve this by adding the following meta tag to the head section:

<meta http-equiv="x-ua-compatible" content="IE=8"/>

Once you have set the standards compatibility mode, include a reference to html5shiv in order to enable IE to recognize and style HTML5 elements. This script serves as a JavaScript shiv specifically designed for this purpose:

<!--[if IE]>
    <script src="http://html5shiv.googlecode.com/svn/trunk/html5.js"></script>
<![endif]-->

With these adjustments made, your markup should function properly in Internet Explorer. For best results, remember to perform a full resource refresh in IE by pressing CTRL + F5.

* If you are working on a new website, consider using IE=edge instead, as it instructs Internet Explorer to utilize the highest available mode.

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