Tutorial Paste Events

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$.fn.pasteEvents = function( delay ) {
    if (delay == undefined) delay = 20;
    return $(this).each(function() {
        var $el = $(this);
        $el.on("paste", function() {
            $el.trigger("prepaste");
            setTimeout(function() { $el.trigger("postpaste"); }, delay);
        });
    });
};

Call this plugin on an element, then you get callback events for before and after pasting:

$("#some-element").on("postpaste", function() { 
    // do something
}).pasteEvents();

Reference URL

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