占位符与数据占位符，在 HTML 中
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placeholder vs. data-placeholder, in HTML
提问by daCoda
What's the differencebetween the two?
两者有什么区别？
placeholder vs. data-placeholder?
占位符与数据占位符？
They both seem to produce the same results.
他们似乎都产生了相同的结果。
<select data-placeholder="Enter name">
<select placeholder="Enter name">
What's the difference?
有什么不同？
(Which one's stronger?)
（谁更强？）
回答by Claudio Redi
Attribute placeholderis a standard HTML5 attribute and data-placeholderis just data-HTML5 attribute used by some javascript plugin.
属性placeholder是一个标准的 HTML5 属性，data-placeholder只是data-一些 javascript 插件使用的 HTML5 属性。
Without the external js plugin, data-placeholderdoes nothing while placeholderworks with the only requirement of having HTML5 support on client browser.
如果没有外部 js 插件，则只需要在客户端浏览器上支持 HTML5data-placeholder就什么都不做placeholder。
回答by Joseph Silber
They can't possibly produce the same results. placeholderis part of the HTML5 spec to show placeholder text in the field before anything is typed, while data-*is just generic data attached to the element.
他们不可能产生相同的结果。placeholder是 HTML5 规范的一部分，用于在输入任何内容之前在字段中显示占位符文本，而data-*只是附加到元素的通用数据。
You might have some JavaScript polyfill or something on the page that uses data-placeholder.
您可能在页面上有一些 JavaScript polyfill 或使用data-placeholder.
