MDL提供了一系列CSS类来应用各种预定义的视觉和行为增强功能，并显示不同类型的文本输入.下表列出了可用的类及其效果.
| Sr.No. | Class Name&描述 |
|---|---|
| 1 | mdl-textfield 将容器标识为MDL组件，并且在"外部"div元素上是必需的. |
| 2 | mdl-js-textfield 将基本MDL行为设置为输入，并且在"外部"div元素上是必需的. |
| 3 | mdl-textfield__input 将元素标识为文本字段输入，并且在input或textarea元素上是必需的. |
| 4 | mdl-textfield__label 将元素标识为文本字段标签，并且对于input或textarea元素的label元素是必需的. |
| 5 | mdl-textfield - floating-label 应用浮动标签效果，是可选的;继续"外部"div元素. |
| 6 | mdl-textfield__error 将范围标识为MDL错误消息，并且是可选的;继续使用带有模式的MDL输入元素的span元素. |
| 7 | mdl-textfield - expandable 将div标识为MDL可扩展文本字段容器;用于可扩展的输入字段，在"外部"div元素上是必需的. |
| 8 | mdl-button 标识标签作为MDL图标按钮;用于可扩展的输入字段，并且在"外部"div的标签元素上是必需的. |
| 9 | mdl-js-button 将基本行为设置为图标容器;用于可扩展的输入字段，并且在"外部"div的标签元素上是必需的. |
| 10 | mdl-button - icon 将标签标识为MDL图标容器;用于可扩展的输入字段，并且在"外部"div的标签元素上是必需的. |
| 11 | mdl-input__expandable-holder 将容器标识为MDL组件;用于可扩展的输入字段，并且在"inner"div元素上是必需的. |
| 12 | 无效 标识textfield在初始加载时无效，在mdl-textfield元素上是可选的. |
以下示例将帮助您了解使用mdl-textfield类来显示不同类型的文本字段.
<html>
<head>
<script
src = "https://storage.googleapis.com/code.getmdl.io/1.0.6/material.min.js">
</script>
<link rel = "stylesheet"
href = "https://storage.googleapis.com/code.getmdl.io/1.0.6/material.indigo-pink.min.css">
<link rel = "stylesheet"
href = "https://fonts.googleapis.com/icon?family=Material+Icons">
<script langauage = "javascript">
function showMessage(value) {
document.getElementById("message").innerHTML = value;
}
</script>
</head>
<body>
<table>
<tr><td>Simple Text Field</td><td>Numeric Text Field</td>
<td>Disabled Text Field</td></tr>
<tr>
<td>
<form action = "#">
<div class = "mdl-textfield mdl-js-textfield">
<input class = "mdl-textfield__input" type = "text" id = "text1">
<label class = "mdl-textfield__label" for = "text1">Text...</label>
</div>
</form>
</td>
<td>
<form action = "#">
<div class = "mdl-textfield mdl-js-textfield">
<input class = "mdl-textfield__input" type = "text"
pattern = "-?[0-9]*(\.[0-9]+)?" id = "text2">
<label class = "mdl-textfield__label" for = "text2">
Number...</label>
<span class = "mdl-textfield__error">Number required!</span>
</div>
</form>
</td>
<td>
<form action = "#">
<div class = "mdl-textfield mdl-js-textfield">
<input class = "mdl-textfield__input" type = "text"
id = "text3" disabled>
<label class = "mdl-textfield__label" for = "text3">
Disabled...</label>
</div>
</form>
</td>
</tr>
<tr><td>Simple Text Field with Floating Label</td>
<td>Numeric Text Field with Floating Label</td>
<td> </td></tr>
<tr>
<td>
<form action = "#">
<div class = "mdl-textfield mdl-js-textfield mdl-textfield--floating-label">
<input class = "mdl-textfield__input" type = "text" id = "text4">
<label class = "mdl-textfield__label" for = "text4">Text...</label>
</div>
</form>
</td>
<td>
<form action = "#">
<div class = "mdl-textfield mdl-js-textfield mdl-textfield--floating-label">
<input class = "mdl-textfield__input" type = "text"
pattern = "-?[0-9]*(\.[0-9]+)?" id = "text5">
<label class = "mdl-textfield__label" for = "text5">
Number...</label>
<span class = "mdl-textfield__error">Number required!</span>
</div>
</form>
</td>
<td> </td>
</tr>
<tr><td>Multiline Text Field</td><td>Expandable Multiline Text Field</td>
<td> </td></tr>
<tr>
<td>
<form action = "#">
<div class = "mdl-textfield mdl-js-textfield">
<textarea class = "mdl-textfield__input" type = "text" rows = "3"
id = "text7" ></textarea>
<label class = "mdl-textfield__label" for = "text7">Lines...</label>
</div>
</form>
</td>
<td>
<form action = "#">
<div class = "mdl-textfield mdl-js-textfield mdl-textfield--expandable">
<label class = "mdl-button mdl-js-button mdl-button--icon"
for = "text8">
<i class = "material-icons">search</i>
</label>
<div class = "mdl-textfield__expandable-holder">
<input class = "mdl-textfield__input" type = "text" id = "text8">
<label class = "mdl-textfield__label" for = "sample-expandable">
Expandable Input</label>
</div>
</div>
</form>
</td>
<td> </td>
</tr>
</table>
</body>
</html>验证结果.
