方法一：用form 表单的datalist属性，此时会以首字母补充排序。实现效果参考：http://www.w3schools.com/html/tryit.asp?filename=tryhtml_elem_datalist
<!DOCTYPE html>
<html>
<body> <form action="action_page.php">
<input list="browsers" name="browser">
<datalist id="browsers">
<option value="Internet Explorer">
<option value="Internet2 Explorer">
<option value="Firefox">
<option value="Chrome">
<option value="Opera">
<option value="Safari">
</datalist>
<input type="submit">
</form> <p><b>Note:</b> The datalist tag is not supported in Safari or IE9 (and earlier).</p> </body>
</html>
HTML code
方法二：用easycomplete，下载地址http://easyautocomplete.com/。实现效果会匹配包含输入字母的所有选项
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<!-- Using jQuery with a CDN -->
<script src="./jquery-2.1.3.min.js"></script> <!-- JS file -->
<script src="./jquery.easy-autocomplete.min.js"></script> <!-- CSS file -->
<link rel="stylesheet" href="./easy-autocomplete.min.css"> <!-- Additional CSS Themes file - not required-->
<!--<link rel="stylesheet" href="./easy-autocomplete.themes.min.css">--> <script>
$(document).ready(function () {
var options = {
data: ["blue", "green", "pink", "red", "yellow"]
};
$("#basics").easyAutocomplete(options);
})
</script>
</head>
<body>
<input id="basics"/>
</body>
</html>