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How to copy all the attributes of one element and apply them to another?

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灰色年华
灰色年华 2020-11-28 06:50

How do I copy the attributes of one element to another element?

HTML
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  • 忘掉有多难
    2020-11-28 06:59 
    $("div").addClass($('#foo').attr('class'));
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  • 小蘑菇
    2020-11-28 07:00

    Pretty Simple

    function cloneAttributes(element, sourceNode) {
  let attr;
  let attributes = Array.prototype.slice.call(sourceNode.attributes);
  while(attr = attributes.pop()) {
    element.setAttribute(attr.nodeName, attr.nodeValue);
  }
}
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  • 情深已故
    2020-11-28 07:01

    We could also try extending the jQuery prototype ($.fn) object to provide a new method that can be chained to the jQuery() function.

    Here's an extension of @pimvdb's solution to provide a function that copies all attributes

    The usage would be like so:

     $(destinationElement).copyAllAttributes(sourceElement);

    The extension function can be defined like so:

    (function ($) {

    // Define the function here
    $.fn.copyAllAttributes = function(sourceElement) {

        // 'that' contains a pointer to the destination element
        var that = this;

        // Place holder for all attributes
        var allAttributes = ($(sourceElement) && $(sourceElement).length > 0) ?
            $(sourceElement).prop("attributes") : null;

        // Iterate through attributes and add    
        if (allAttributes && $(that) && $(that).length == 1) {
            $.each(allAttributes, function() {
                // Ensure that class names are not copied but rather added
                if (this.name == "class") {
                    $(that).addClass(this.value);
                } else {
                    that.attr(this.name, this.value);
                }

            });
        }

        return that;
    }; 

})(jQuery);

    An Example is available at http://jsfiddle.net/roeburg/Z8x8x/

    Hope this helps.

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  • 迷失自我
    2020-11-28 07:02

    Javascript solution

    Copy the attributes of old element to the new element

    const $oldElem = document.querySelector('.old')
const $newElem = document.createElement('div')

Array.from($oldElem.attributes).map(a => {
  $newElem.setAttribute(a.name, a.value)
})

    Replace the old element with the new element, if required

    $oldElem.parentNode.replaceChild($newElem, $oldElem)
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  • 情深已故
    2020-11-28 07:03

    You can try this:

    function copyAttributes(from, to)
{
  $($(from)[0].attributes).
    each(function(){$(to).attr(this.nodeName, this.nodeValue);});

  return $(to);
};

    The return statement lets you write things like:

    copyAttributes(some_element, $('<div></div>')).append(...) ...

    Hope this helps.

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