我的问题（已更新）： 如何根据 AJAX 调用在 API URL 搜索查询中更改关键字（此处存在范围问题）？
我将传单地图连接到API以绘制带有地理坐标的维基百科文章。示例 URL 如下所示：http://api.infochimps.com/encyclopedic/wikipedia/dbpedia/wikipedia_articles/search?g.radius=10000&g.latitude=30.3&g.longitude=-97.75&f.q=park&apikey=api_test-W1cipwpcdu9Cbd9pmm8D4Cjc469
到目前为止，一切都很好。但我被困在如何实现允许用户搜索新查询词并重新加载地图的 AJAX 调用上。当我单击搜索框时，关键字会提示该关键字是搜索框中的文本。但是地图不会根据新关键字进行更新。
所以我有一个 JS 脚本：
var map;
var pointsLayer;
var markerMap = {};
var keyword; //instantiating keyword for global scope
$(document).ready(function(){
map = new L.Map('mapContainer');
var url = 'http://{s}.tiles.mapbox.com/v3/mapbox.mapbox-streets/{z}/{x}/{y}.png';
var copyright = 'Map data © 2011 OpenStreetMap contributors, Imagery © 2011 CloudMade';
var tileLayer = new L.TileLayer(url, {attribution:copyright});
//var startPosition = new L.LatLng(42.33143, -83.04575);//detroit
var startPosition = new L.LatLng(41.883333, -87.633333);//chicago
//var startPosition = new L.LatLng(40.7143528, -74.0059731);//new york
map.on('load', function(){
keyword = 'history'; //setting keyword to history on first load
requestUpdatedPoints();
keyword = ''; //clearing keyword after first load
});
map.setView(startPosition, 13).addLayer(tileLayer);
map.on('moveend', function(){
requestUpdatedPoints();
});
//////////////
/// WRONG ADDITION OF ADDING KEYWORD SEARCH?
//////////////
$('a#submitSearch').on('click', function(e, keyword){
e.preventDefault();
//keyword = '';
keyword = $('input#keyword').val(); //setting keyword to whatever is in the search box
alert(keyword); //did it set it?
requestUpdatedPoints(keyword); //send in new AJAX call with new keyword
location.reload();
});
});
function requestUpdatedPoints(keyword){
$.ajax({
type: 'GET',
url: 'http://api.infochimps.com/encyclopedic/wikipedia/dbpedia/wikipedia_articles/search?g.radius=100000&g.latitude=41.883333&g.longitude=-87.633333&f.q='+this.keyword+'&apikey=api_test-W1cipwpcdu9Cbd9pmm8D4Cjc469',
dataType: 'jsonp',
//data: JSON.stringify(data),
contentType: 'application/json; charset=utf-8',
success: function(result){
for( var i=0; i<result.results.length - 1; i++ ){
console.log("adding " + result.results[i].wikipedia_id + " to the map")
var marker = L.marker([result.results[i].coordinates[1], result.results[i].coordinates[0]]).addTo(map);
marker.bindPopup('<a href="'+result.results[i].url+'" target="_blank">'+result.results[i].wikipedia_id+'</a>');
}
},
error: function(){
alert('check your error log.');
}
});
}
HTML是：
<!DOCTYPE html>
<html>
<head>
<link rel="stylesheet" href="./style.css">
<link rel="stylesheet" href="http://cdn.leafletjs.com/leaflet-0.4/leaflet.css">
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js"></script>
<script type="text/javascript" src="http://cdn.leafletjs.com/leaflet-0.4/leaflet.js"></script>
<script type="text/javascript" src="./map.js"></script>
</head>
<body>
<h1>WikiMap</h1>
<div id="mapContainer"></div>
<div id="infoContainer">
<div id="search">
<form id="searchForm">
<label>Keyword:</label>
<input type="text" id="keyword" name="keyword" placeholder="search by keyword"/>
<a id="submitSearch" href="#">search</a>
</form>
</div>
</div>
</body>
</html>
我的问题（已更新）： 如何根据 AJAX 调用在 API URL 搜索查询中更改关键字（此处存在范围问题）？