<body>
<label>Select your preferred code editor:</label>
<input type="text" id="txt_ide" list="ide" />
<datalist id="ide">
<option value="Brackets" />
<option value="Coda" />
<option value="Dreamweaver" />
<option value="Espresso" />
<option value="jEdit" />
<option value="Komodo Edit" />
<option value="Notepad++" />
<option value="Sublime Text 2" />
<option value="Taco HTML Edit" />
<option value="Textmate" />
<option value="Text Pad" />
<option value="TextWrangler" />
<option value="Visual Studio" />
<option value="VIM" />
<option value="XCode" />
</datalist>
</body>
效果图：