Click events stop working after replacing attribut

问题:

We are using multiple svg symbols for displaying icons.

<!-- defining them at the start of the page -->
<div id="icon-container">
<svg xmlns="http://www.w3.org/2000/svg">
    <symbol xmlns="http://www.w3.org/2000/svg"
            id="rect" ...>
        <rect... />
    </symbol>

    <symbol xmlns="http://www.w3.org/2000/svg"
            id="circle" ...>
        <circle... />
    </symbol>
</svg>
</div>

<!-- using them in the page somewhere -->
<svg>
    <use xlink:href="#rect"></use>
</svg>

In some cases we need to replace them later on with another icon (like on a collapse control), therefore I created a little helper function to change the xlink:href to the new symbol name.

$.fn.replaceSVGIcon = function(id) {
    $(this).find('svg')
           .andSelf()
           .filter('svg')
           .find('use')
           .attr('xlink:href', '#' + id);
}

This works in every browser except for IE10 + IE11 on Windows 7 (but weirdly enough it works with Windows 8).

When you open the snippet below in IE11 and click on the red box everything is fine, but as soon as you start clicking on the element within, it breaks the whole page after the icon is changed for the first time.

(function($){
    $.fn.replaceSVGIcon = function(id) {
        $(this).find('svg').andSelf().filter('svg').find('use').attr('xlink:href', '#' + id);
    }
})(jQuery);

clickFunction = function() {
    var $elem = $('#icon');
    
    if ($elem.find('use').attr('xlink:href') == '#rect')
    {
        $elem.replaceSVGIcon('circle');
    } else {
        $elem.replaceSVGIcon('rect');
    }
};

#icon-container {
    visibility: collapse;
    display: none;
}

#icon {
    height: 40px;
    width: 40px;
    fill: #454545;
    cursor: pointer;
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>

<div id="icon-container">
    <svg xmlns="http://www.w3.org/2000/svg">
        <symbol xmlns="http://www.w3.org/2000/svg" id="rect" viewBox="0 0 50 50">
            <rect x="15" y="15" width="20" height="20"></rect>
        </symbol>
    
        <symbol xmlns="http://www.w3.org/2000/svg" id="circle" viewBox="0 0 50 50">
            <circle cx="25" cy="25" r="10"></circle>
        </symbol>
    </svg>
</div>

<svg id="icon" onclick="clickFunction()">
    <rect fill="red" height="40" width="40"></rect>
    <use xlink:href="#rect"></use>
</svg>

Why is this happening and is this a known Internet Explorer bug? What are my options to work around this issue?

回答1:

Yes, this is a known IE bug. https://connect.microsoft.com/IE/feedback/details/796745/mouse-events-are-not-delivered-at-all-anymore-when-inside-an-svg-a-use-is-removed-from-the-dom

If you can, you should set pointer-events: none; for the use tag in your CSS. It's crazy, but it should work.