text对象的size属性用于设定或读取文本框中可显示字符的长度。 1、 新建一个名为 text_size 的 HTML 文件。 2、 创建一个文本输入框，类型为text，指定其ID为my_text_id_size，并将输入框的显示长度设为50个字符。 3、 添加一个按钮，为其点击事件绑定自定义函数my_text ...

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用户从飞书复制内容粘贴到编辑器里，浏览器通过剪贴板接口（Clipboard API）拿到的其实是一段 HTML 代码（就是网页的源代码格式）。我们要把这段 HTML 转成 Markdown（一种简洁的写作格式），再由工具渲染成公众号能用的排版。

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