我正在使用一个名为Maplacejs(https://maplacejs.com/)的jQuery插件,让我更容易操作Google地图(我是这个主题的新手)。
我首先创建一个变量来设置(初始化)Maplace:
var maplace = new Maplace({
map_div: '#mappanel',
controls_type: 'dropdown',
controls_title: 'Select a point:',
controls_position: google.maps.ControlPosition.TOP_LEFT
});
然后我在下拉菜单中选择某个日期时,使用ajax创建一个在Maplace中加载位置的函数:
function loadMap() {
$.ajax({
url: 'includes/ajax_getmap.php',
type: 'POST',
cache: false,
timeout: 5000,
data: { date: $('#dateselect').val() },
dataType: 'json',
success: function(data) {
maplace.SetLocations(data.locations, true);
},
error: function(XMLHttpRequest, textStatus, errorThrown) {
alert(errorThrown)
}
});
}
以下是使用ajax加载的locations数组的示例:
{"locations":[
{"lat":52.1,"lon":11.3,"title":"Title 1","html":"<h3>Content 1</h3>","zoom":8},
{"lat":51.2,"lon":22.2,"title":"Title 2","html":"<h3>Content 2</h3>","zoom":8},
{"lat":49.4,"lon":35.9,"title":"Title 3","html":"<h3>Content 3</h3>","zoom":8},
{"lat":47.8,"lon":15.6,"title":"Title 4","html":"<h3>Content D2</h3>","zoom":8}
]}
以下是用于“调用”函数的代码(日期列表):
$('#dateselect').selectmenu({
style: 'dropdown',
change: function(event, data) {
loadMap();
}
});
问题是:每次调用此函数时,控件都会在地图中重复出现。这是我调用该函数3次后的示例图像:
我已经尝试在ajax“sucess”事件中创建maplace变量,甚至将变量设置为“null”或“undefined”,但没有成功:(
拜托,你能帮助我吗?