您可以通过一点jQuery来实现这一点：

在文件夹/js/called字段clear中创建此文件。js和替换#formID 使用要重置的表单ID：

//Code runs when an ajax request succeeds
jQuery( document ).ajaxSuccess(function( event, xhr, settings ) {
    //Check ajax action of request that succeeded
    if(settings.action == \'add_tag\') {
        //Reset the form
        jQuery(\'#formID\')[0].reset();

        //Send ajax response to console.
        console.log("Triggered ajaxSuccess handler. The ajax response was: " + xhr.responseText );
    }
});

wp_register_script(\'field-clear-script\', get_stylesheet_directory_uri() . \'/js/field-clear.js\', array(\'jquery\'), null, true);

function field_clear_load_scripts() {
    wp_enqueue_script(\'field-clear-script\');
}
add_action(\'admin_enqueue_scripts\', \'field_clear_load_scripts\');

Jason\'s answer 非常接近，这为我在WP 4.9上提供了此解决方案：

$(document).ajaxSuccess(function(evt, xhr, opts) {
    if (
        xhr.status >= 200
        && xhr.status < 300
        && opts.data
        && /(^|&)action=add-tag($|&)/.test(opts.data)
        && /(^|&)taxonomy=YOUR_TAXONOMY($|&)/.test(opts.data)
        && xhr.responseXML
        && $(\'wp_error\', xhr.responseXML).length == 0
    ) {
        // clear your fields
    }
});