WordPress 搜索下拉关键词提示

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get_header();

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if(isset($_SERVER['HTTP_X_REQUESTED_WITH']) && strtolower($_SERVER['HTTP_X_REQUESTED_WITH']) == 'xmlhttprequest'){
		$array_posts = array ();
		if (have_posts()) :
			 while (have_posts()) : the_post();
				 array_push($array_posts, array("title"=>get_the_title(),"url"=>get_permalink()));
			 endwhile;
		endif;
		echo json_encode($array_posts);
	} else {
get_header();

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get_footer();

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get_footer();}

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<div id="search-container" class="ajax_search">
	<form method="get" id="searchform" action="<?php echo esc_url(home_url('/')); ?>">
		<div class="filter_container"><input type="text" value="" autocomplete="off" placeholder="输入内容并回车" name="s" id="search-input"/><ul id="search_filtered" class="search_filtered"></ul> </div>
		<input type="submit" name="submit" id="searchsubmit" class="searchsubmit" value=""/>
	</form>
</div>

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<?php wp_footer(); ?>

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<script>var home_url="<?php echo esc_url(home_url('/')); ?>";</script>

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//search
var input_search = $("#search-input");
function makeAjaxSearch(result) {
	if (result.length == 0) {
		$("#search_filtered").empty().show().append('<li><a href="javascript:vold(0)"><strong>这能搜到嘛？</strong></a></li>');
	} else {
		$("#search_filtered").empty().show();
		for (var i = 0; i < result.length; i++) $("#search_filtered").append('<li><a href="'%20+ result[i]["url"] + '">'%20+ result[i]["title"] + '</a></li>');
	}
}
var delaySearch;
 
function startSearch() {
	$.ajax({
		type: "GET",
		url: home_url, 
		data: "s=" + input_search.val(),
		dataType: 'json',
		success: function (result) {
			makeAjaxSearch(result);
			console.log(result);
		}
	});
}
var event_ajax_search = {
	bind_event: function () {
		input_search.bind('keyup', function (e) {
			if (input_search.val() != "" && e.keyCode != 40) {
				if (delaySearch) {
					clearTimeout(delaySearch)
				}
				delaySearch = setTimeout(startSearch, 200);
			}
			if (e.keyCode == 40) {
				search_filtered.moveable();
			}
		})
	},
	unbind_event: function () {
		input_search.unbind('keyup');
	}
};
var search_filtered = {
	moveable: function () {
		var current = 0;
		$('#search_filtered').find('a').eq(current).focus();
		$(document).bind("keydown.search_result", function (e) {
			if (e.keyCode == 40) {
 
				if (current >= $('#search_filtered').find('a').size()) {
					current = 0;
				}
 
				$('#search_filtered').find('a').eq(++current).focus();
				e.preventDefault();
 
			}
			if (e.keyCode == 38) {
				if (current < 0) {
					current = $('#search_filtered').find('a').size() - 1;
				}
 
				$('#search_filtered').find('a').eq(--current).focus();
				e.preventDefault();
			}
		});
	},
	hide: function () {
		$(document).unbind("keyup.search_result");
		$('#search_filtered').fadeOut();
	}
};
input_search.focus(function () {
	event_ajax_search.bind_event();
}).blur(function () {
	event_ajax_search.unbind_event();
});

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.filter_container {display: inline-block;position: relative;}
.ajax_search .search_filtered a {display: block;font-size: 12px;overflow: hidden;padding: 7px 12px 7px 10px;text-overflow: ellipsis;white-space: nowrap;width: 153px;color: #D14836;}
.ajax_search .search_filtered {background-color: rgba(255, 255, 255, 0.95);left: 0;position: absolute;text-align: left;top: 102%;z-index: 200;}
#search-input{float: left;border:none;height:22px;width:150px;padding-right:25px;line-height: 22px;text-indent: 10px;font-size:12px;background-color: transparent;background-image:url(img/search.png);background-repeat:no-repeat;background-position:right center}
#search-input:focus{background-color: #fff;}
#searchsubmit{display: none;}
.ajax_search .search_filtered a:hover, .ajax_search .search_filtered a:focus {background-color: rgba(0, 0, 0, 0.03);text-decoration: none;outline:thin