前端开发问题

How does StackOverflow#39;s #39;tags#39; textbox autocomplete work?(StackOverflow 的“标签文本框自动完成是如何工作的?)
HTML/CSS Making a textbox with text that is grayed out, and disappears when I click to enter info, how?(HTML/CSS 用灰色的文本制作一个文本框,当我点击输入信息时消失,如何?)
Allow only numbers into a input text box(只允许在输入文本框中输入数字)
How to validate html textbox not to allow special characters and space?(如何验证 html 文本框不允许特殊字符和空格?)
Access Rich-Text: Which subset of HTML is supported?(访问富文本:支持 HTML 的哪个子集?)
Attach event to clear icon in IE10 textbox(附加事件以清除 IE10 文本框中的图标)
Keep text selection when focus changes(焦点改变时保持文本选择)
How do I add textboxes dynamically in Javascript?(如何在 Javascript 中动态添加文本框?)
dynamically increase input type text textbox width according to the characters entering into it(根据输入的字符动态增加输入类型文本文本框的宽度)
When a user clicks Show link, display the password, hide it when clicked again(当用户点击显示链接时,显示密码,再次点击时隐藏)
Google Chrome gt; Textboxes gt; Yellow border when active..?(谷歌浏览器 gt;文本框 gt;活动时黄色边框..?)
How to capture Enter key press?(如何捕获 Enter 按键?)