Force all links to open in the same tab (_self), including static and dynamically created ones
// ==UserScript==
// @name Force _self for links
// @namespace http://tampermonkey.net/
// @version 2025-05-26
// @description Force all links to open in the same tab (_self), including static and dynamically created ones
// @author https://github.com/Hojondo
// @match *://*.douban.com/*
// @match *://*.zhihu.com/*
// @match *://*.sspai.com/*
// @run-at document-start
// @grant none
// @license MIT
// ==/UserScript==
(function () {
'use strict';
// --- 1. 强制设置现有的 <a target="_blank"> 改为 "_self"
function fixAllLinks() {
const links = document.querySelectorAll('a[target="_blank"]');
for (const link of links) {
link.setAttribute('target', '_self');
}
}
// --- 2. 使用 MutationObserver 动态监听新增 <a> 标签
const observer = new MutationObserver((mutations) => {
for (const mutation of mutations) {
for (const node of mutation.addedNodes) {
if (node.nodeType !== 1) continue;
if (node.tagName === 'A') {
if (node.getAttribute('target') === '_blank') {
node.setAttribute('target', '_self');
}
}
// 遍历其子节点
const links = node.querySelectorAll?.('a[target="_blank"]') || [];
for (const link of links) {
link.setAttribute('target', '_self');
}
}
}
});
// 页面加载后开始观察 DOM 变化
window.addEventListener('DOMContentLoaded', () => {
fixAllLinks();
observer.observe(document.body, {
childList: true,
subtree: true
});
});
// --- 3. hook DOM API：拦截 setAttribute 操作
const originalSetAttribute = Element.prototype.setAttribute;
Element.prototype.setAttribute = function (name, value) {
if (
this.tagName === 'A' &&
name === 'target' &&
value === '_blank'
) {
value = '_self';
}
return originalSetAttribute.call(this, name, value);
};
// --- 4. hook DOM property：拦截 .target = '_blank'
Object.defineProperty(HTMLAnchorElement.prototype, 'target', {
set(value) {
if (value === '_blank') {
value = '_self';
}
this.setAttribute('target', value);
},
get() {
return this.getAttribute('target');
},
configurable: true
});
// --- 5. 拦截 window.open 强制使用 _self
const originalOpen = window.open;
window.open = function (url, target, features) {
if (target === '_blank' || !target) {
console.log('🔒 拦截 window.open，强制 _self:', url);
return location.assign(url); // 强制当前页跳转
}
return originalOpen.call(window, url, target, features);
};
})();