markerdown-为memos增加快捷输入md语法的注入项
只需要简单的js注入即可实现输入框快捷输入md语法
一 预览
效果预览如下，兼容多种主题风格，方便在输入文字的过程中直接使用md语法：
二 实现方式
将以下代码粘贴进memos中的自定义脚本中即可
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(function() {
// 1. 工具配置
const tools = [
{ label: "标题 1", prefix: "# ", suffix: "", icon: "H1" },
{ label: "标题 2", prefix: "## ", suffix: "", icon: "H2" },
{ label: "标题 3", prefix: "### ", suffix: "", icon: "H3" },
{ label: "加粗", prefix: "**", suffix: "**", icon: "<b>B</b>" },
{ label: "斜体", prefix: "*", suffix: "*", icon: "<i>I</i>" },
{ label: "删除线", prefix: "~~", suffix: "~~", icon: "<s>S</s>" },
{ label: "高亮", prefix: "==", suffix: "==", icon: "M" },
{ label: "代码块", prefix: "```\n", suffix: "\n```", icon: "{}" },
{ label: "引用", prefix: "> ", suffix: "", icon: "“" },
{ label: "任务", prefix: "- [ ] ", suffix: "", icon: "☑" },
{ label: "列表", prefix: "- ", suffix: "", icon: "•" },
{ label: "表格", prefix: "| 标题 | 标题 |\n| --- | --- |\n| 内容 | 内容 |", suffix: "", icon: "田" },
{ label: "链接", prefix: "[", suffix: "](url)", icon: "🔗" },
{ label: "图片", prefix: "![alt](", suffix: ")", icon: "🖼" },
{ label: "公式", prefix: "$", suffix: "$", icon: "∑" },
{ label: "分割线", prefix: "\n---\n", suffix: "", icon: "—" },
];
// 2. 注入兼容 Memos 主题的 CSS
const styleId = 'memos-markdown-toolbar-style';
if (!document.getElementById(styleId)) {
const style = document.createElement('style');
style.id = styleId;
style.innerHTML = `
.memos-md-toolbar {
display: flex;
flex-wrap: wrap;
gap: 2px;
padding: 4px;
/* 直接使用 Memos 内部变量 */
background-color: var(--zinc-100);
border: 1px solid var(--zinc-200);
border-bottom: none;
border-radius: 0.5rem 0.5rem 0 0;
width: 100%;
box-sizing: border-box;
}
/* 暗色模式适配 */
.dark .memos-md-toolbar {
background-color: var(--zinc-800);
border-color: var(--zinc-700);
}
.md-toolbar-btn {
display: flex;
align-items: center;
justify-content: center;
min-width: 30px;
height: 28px;
font-size: 13px;
border-radius: 4px;
border: none;
background: transparent;
cursor: pointer;
/* 继承 Memos 的文字颜色 */
color: var(--text-zinc-500);
transition: all 0.2s;
}
.md-toolbar-btn:hover {
background-color: var(--zinc-200);
color: var(--text-zinc-700);
}
.dark .md-toolbar-btn:hover {
background-color: var(--zinc-700);
color: var(--text-zinc-300);
}
/* 修正输入框样式以衔接 */
.memos-editor-textarea {
border-top-left-radius: 0 !important;
border-top-right-radius: 0 !important;
}
`;
document.head.appendChild(style);
}
// 3. 插入逻辑
function insertText(textarea, prefix, suffix) {
if (!textarea) return;
const start = textarea.selectionStart;
const end = textarea.selectionEnd;
const text = textarea.value;
const selection = text.substring(start, end);
const newVal = text.substring(0, start) + prefix + selection + suffix + text.substring(end);
textarea.value = newVal;
textarea.dispatchEvent(new Event('input', { bubbles: true }));
textarea.focus();
const cursorPos = start + prefix.length + selection.length;
textarea.setSelectionRange(cursorPos, cursorPos);
}
function createToolbar(textarea) {
if (textarea.getAttribute('data-has-md-toolbar')) return;
const parent = textarea.parentElement;
if (!parent) return;
textarea.setAttribute('data-has-md-toolbar', 'true');
textarea.classList.add('memos-editor-textarea');
const toolbar = document.createElement('div');
toolbar.className = 'memos-md-toolbar';
tools.forEach(tool => {
const btn = document.createElement('button');
btn.className = 'md-toolbar-btn';
btn.innerHTML = tool.icon;
btn.title = tool.label;
btn.type = 'button';
btn.onclick = (e) => {
e.preventDefault();
e.stopPropagation();
insertText(textarea, tool.prefix, tool.suffix);
};
toolbar.appendChild(btn);
});
parent.style.flexDirection = 'column';
parent.insertBefore(toolbar, textarea);
}
function scan() {
// 兼容首页、弹窗以及不同语言下的 textarea
const textareas = document.querySelectorAll('textarea');
textareas.forEach(el => {
if (el.placeholder.includes('记') ||
el.placeholder.includes('What') ||
el.classList.contains('resize-none')) {
createToolbar(el);
}
});
}
// 监听 DOM 变化
const observer = new MutationObserver(scan);
observer.observe(document.body, { childList: true, subtree: true });
// 初始化和周期性扫描
setTimeout(scan, 500);
setInterval(scan, 2000);
console.log("Memos v0.25+ Theme-Adaptive Toolbar Loaded.");
})();