script/assets/lib/map/gaode.js

var map = new AMap.Map("container", {
    resizeEnable: true
});
var placeSearch = false;
var marker = false;
AMap.service(["AMap.PlaceSearch"], function() {
    placeSearch = new AMap.PlaceSearch({
        pageSize: 5,
        pageIndex: 1,
        map: map,
        panel: "panel"
    });
});

var clickEventListener = map.on('click', function(e) {
    var x = e.lnglat.getLng();
    var y = e.lnglat.getLat();
    var z = map.getZoom();
    parent.setMap(x, y, z);
    setMaker(x, y);
});

function search(txt) {
	if (txt.indexOf(',') != -1) {
		var temp = txt.split(',');
		txt = temp[0];
		var x = temp[1];
		var y = temp[2];
		setMaker(x, y);
	}
	parent.closeMsg();
    placeSearch.search(txt);
}

function setMaker(x, y) {
	if (marker) {
		marker.setPosition([x, y]); 
	} else {
		marker = new AMap.Marker({
            icon: "https://webapi.amap.com/theme/v1.3/markers/n/mark_r.png",
            position: [x, y]
        });
        marker.setMap(map);
	}
}

function showMaker(txt) {
	if (txt.indexOf(',') != -1) {
		var temp = txt.split(',');
		txt = temp[0];
		var x = temp[1];
		var y = temp[2];
		var z = temp[3];
	} else {
		return;
	}
	map.setZoomAndCenter(z, [x, y]);
    new AMap.Marker({
        map: map,
        position: [x, y]
    });
}