亚马逊提供了一个API来获取输入字母的建议：
http://completion.amazon.com/search/complete?search-alias=aps&client=amazon-search-ui&mkt=1&q=facebook
将给出响应：
["facebook",["facebook","facebook login","facebook.com","facebook credits","facebook gift card","facebook app","facebook messenger","facebook for dummies","facebook en español","facebook phone"],[{"nodes":[{"alias":"mobile-apps","name":"Apps for Android"},{"alias":"stripbooks","name":"Books"},{"alias":"textbooks-tradein","name":"Books Trade-in"},{"alias":"digital-text","name":"Kindle Store"}]},{},{},{},{},{},{},{},{},{}],[]]
如何使用jQuery或PHP从JSON响应创建自动建议？
如果您可以使用jqueryui-autocomplete插件，那么您可以将其源选项设置为一个函数，该函数介于jqueryui-autocomplete所需的格式和亚马逊提供的API之间。以下内容应该能够处理基于您作为示例给出的JSON的JSONP响应。您可以看到，您提供的API端点通过向示例URI添加callback GET参数来支持JSONP。例如http://completion.amazon.com/search/complete?search-别名=aps&client=亚马逊搜索ui&mkt=1&q=facebook&callback＝_返回在对_()的调用中封装的数据。jQuery用它的dataType: 'jsonp'选项掩盖了这一点。这对于支持跨站点请求是必要的，因为您不太可能为您的站点提供与完成API相同的来源。
/*
* Connect all <input class="autocomplete"/> to Amazon completion.
*/
jQuery('input.autocomplete').autocomplete({
source: function(request, response) {
jQuery.ajax('http://completion.amazon.com/search/complete', {
/* Disable cache breaker; potentially improves performance. */
cache: true,
data: {
client: 'amazon-search-ui',
mkt: 1,
'search-alias': 'aps',
q: request.term
},
error: function() {
/*
* jquery-autocomplete’s documentation states that response()
* must be called once per autocomplete attempt, regardless
* of whether or not the background request completed
* successfully or not.
*/
response([]);
},
success: function(data) {
/*
* Amazon returns an array of different types of
* autocomplete metadata. The second member is a
* list of terms the user might be trying to type.
* This list is compatible with jqueryui-autocomplete.
*/
response(data[1]);
},
dataType: 'jsonp'
});
}
});
请记住在DOM准备好之后运行此代码，例如从jQuery(document).ready(function() { statements_here(); });内部运行。