// ==UserScript==
// @name         当页开搜
// @namespace    
// @version      3.5
// @description  增强表单处理与回车搜索功能
// @author       YourName
// @match        *://*/*
// @grant        none
// @run-at       document-end
// @downloadURL none
// ==/UserScript==

(function() {
    'use strict';
            document.querySelectorAll('form').forEach(form => {
                form.setAttribute('target', '_self');
            });
     
            new MutationObserver(mutations => {
                mutations.forEach(({ addedNodes }) => {
                    addedNodes.forEach(node => {
                        if (node.nodeName === 'FORM') {
                            node.setAttribute('target', '_self');
                        }
                        if (node.querySelectorAll) {
                            node.querySelectorAll('form').forEach(newForm => {
                                newForm.setAttribute('target', '_self');
                            });
                        }
                    });
                });
            }).observe(document.body, {
                childList: true,
                subtree: true
            });

})();