We Keep Coding

Using google maps JS api, how can I open an infowindow where the user clicks on the map? Is that possible?

Is it possible to open the infowindow right where the user clicks on the map?
Here's what I have right now:
OnClickMap(event) {
const map = this.state.map;
const title = this.props.createNewMarkerTitle;
const marker = {
latLng: {
lat: event.latLng.lat(),
lng: event.latLng.lng()
}
};
const markerOnMap = new google.maps.Marker({
position: marker.latLng,
map: map,
title: title
});
const infowindow = new google.maps.InfoWindow();
const content = document.createElement('div');
ReactDOM.render(this.renderCreateNewMarkerInfoWindow(), content);
infowindow.setContent(content);
markerOnMap.addListener('click', function() {
infowindow.open(map, markerOnMap);
});
}
I'm not sure how I can just click the map, and have the infowindow open on where I clicked. I tried messing around by removing the marker and just having the infowindow open, but that leads to the window opening in the top left since I am not sure how to pass the latLng to it.
Is this possible? Otherwise, how can I set up something where:
click the map ->
creates a marker ->
immediately opens infowindow (instead of having to click the marker to open it)

To open an InfoWindow at the location clicked on the map (without a marker), you need to set the .position property of the InfoWindow (and don't include the optional anchor in the .open call).
map.addListener('click', function(evt) {
var infowindow = new google.maps.InfoWindow();
infowindow.setPosition(evt.latLng);
var content = evt.latLng.toUrlValue(6);
infowindow.setContent(content);
infowindow.open(map);
});
proof of concept fiddle
code snippet:
function initialize() {
var map = new google.maps.Map(
document.getElementById("map_canvas"), {
center: new google.maps.LatLng(37.4419, -122.1419),
zoom: 13,
mapTypeId: google.maps.MapTypeId.ROADMAP
});
map.addListener('click', function(evt) {
var infowindow = new google.maps.InfoWindow();
infowindow.setPosition(evt.latLng);
var content = evt.latLng.toUrlValue(6);
infowindow.setContent(content);
infowindow.open(map);
});
}
google.maps.event.addDomListener(window, "load", initialize);
html,
body,
#map_canvas {
height: 100%;
width: 100%;
margin: 0px;
padding: 0px
}
<script src="https://maps.googleapis.com/maps/api/js"></script>
<div id="map_canvas"></div>

How to change marker postion on Google Map API

I am using google map on my site and here is google map code:
<script src='https://maps.googleapis.com/maps/api/js?v=3.exp'></script>
<div style='overflow:hidden;height:440px;width:700px;'>
<div id='gmap_canvas' style='height:440px;width:700px;'></div>
<style>
#gmap_canvas img {
max-width: none!important;
background: none!important
}
</style>
</div>
<script type='text/javascript'>
function init_map() {
var myOptions = {
zoom: 10,
center: new google.maps.LatLng(51.5073509, -0.12775829999998223),
mapTypeId: google.maps.MapTypeId.ROADMAP
};
map = new google.maps.Map(document.getElementById('gmap_canvas'), myOptions);
marker = new google.maps.Marker({
map: map,
position: new google.maps.LatLng(51.5073509, -0.12775829999998223)
});
infowindow = new google.maps.InfoWindow({
content: '<strong>Title</strong><br>London, United Kingdom<br>'
});
google.maps.event.addListener(marker, 'click', function() {
infowindow.open(map, marker);
});
infowindow.open(map, marker);
}
google.maps.event.addDomListener(window, 'load', init_map);
</script>
and getting this map output:
Currently, I have a div which highlight in Red color and marker is displaying beside Red area so I want to move to the left side.
Now I want to move marker on left side and don't want to use center position because I am showing contents on red area on below example:
Any idea how to move the marker on the top left side?
Thanks.

You can easly shift the map assigning a new center .. (the new coord are for sample)
var newCenter = new google.maps.LatLng(50.5073509, 0.1200)
map.setCenter(newCenter);

You can change the the marker by javascript function
function changeMarkerPosition(marker) {
var latlng = new google.maps.LatLng(-24.397, 140.644);
marker.setPosition(latlng);
}
For more information See this link

Google Maps API v3 - Add marker after initialize

My end-goal: Load only map markers within current map viewport and if map is moved, reload map markers within new viewport.
As far as I know, to do this I need the map corner coordinates which I can only load once the map is idle, that way I can pass these coords to my PHP file to query my database and output the XML for the map markers within the corners (I'm trying to reduce the stress on my DB by restricting the query to only the relevant map area). I'm having trouble adding a dummy marker post-initialize (see code below). It's simply not loading the marker, everything else works fine.
<script src="https://maps.googleapis.com/maps/api/js?v=3.exp"></script>
<script>
function initialize() {
var map = new google.maps.Map(document.getElementById("googleMap"), {
zoom: 12,
center: new google.maps.LatLng(40.779502, -73.967857)
});
google.maps.event.addListener(map, 'idle', function() {
/*bounds = map.getBounds();
ne = bounds.getNorthEast();
sw = bounds.getSouthWest();
window.top.showBounds();*/
TestMarker();
});
}
function addMarker(location) {
marker = new google.maps.Marker({
position: location,
map: map
});
}
// Testing the addMarker function
function TestMarker() {
CentralPark = new google.maps.LatLng(40.779502, -73.967857);
addMarker(CentralPark);
}
google.maps.event.addDomListener(window, 'load', initialize);
</script>

You don't need to wait for the idle event. The map bounds are available the first time the 'bounds_changed' event fires.
Wait for the bounds_changed event; whenever the bounds changes (including the first time), then update your markers on the map.
working fiddle
code snippet:
var map;
var bounds;
function initialize() {
map = new google.maps.Map(document.getElementById("googleMap"), {
zoom: 12,
center: new google.maps.LatLng(40.779502, -73.967857)
});
google.maps.event.addListener(map, 'bounds_changed', function() {
bounds = map.getBounds();
ne = bounds.getNorthEast();
sw = bounds.getSouthWest();
document.getElementById('mapBounds').innerHTML = bounds.toUrlValue(6);
TestMarker();
});
}
function addMarker(location) {
marker = new google.maps.Marker({
position: location,
map: map
});
}
// Testing the addMarker function
function TestMarker() {
CentralPark = new google.maps.LatLng(40.779502, -73.967857);
addMarker(CentralPark);
}
google.maps.event.addDomListener(window, 'load', initialize);
html,
body,
#googleMap {
height: 100%;
width: 100%;
margin: 0px;
padding: 0px
}
<script src="https://maps.googleapis.com/maps/api/js?key=AIzaSyCkUOdZ5y7hMm0yrcCQoCvLwzdM6M8s5qk"></script>
<div id="mapBounds"></div>
<div id="googleMap" style="border: 2px solid #3872ac;"></div>

Why don't you add another listener event inside your initialize function:
google.maps.event.addListener(map, 'dragend', function(){
var latlng = new google.maps.LatLng(35, -90);
var marker = new google.maps.Marker({
position: latlng
});
marker.setMap(map)
});

Google Maps Marker adding is very simple thing.I've created an example, for you.In this page there is some basic examples of google maps markers
http://www.w3docs.com/learn-javascript/google-maps-markers.html

what should i do to create custom menu appear when i click the marker instead of deleting it

here is my code i have done upto this point where when i add marker and hover it infowindow appears, but all of them has the same infowindow i need it to be change for each marker, second instead of clicking on the marker it gets deleted i want to creat a custom menu box on the top of marker where there should be options to add info and delete whe i click the marker.
<html>
<head>
<title>example</title>
<script src="https://maps.googleapis.com/maps/api/js?sensor=false"></script>
<script src="http://code.jquery.com/jquery-1.9.1.js"></script>
<style type="text/css">
#map_canvas {
width: 100%;
height: 500px;
background-color: #CCC;}
#menu_bar{
width: 100%;
height: 150px;
position:absolute;
bottom:0px;
background-color:#008080;
border-top:1px solid red;}
body{
padding:0px;
margin:0px;}
</style>
<!-- google maps Scripting start -->
<script type="text/javascript">
var markers = [];
function initialize() {
var myLatlng = new google.maps.LatLng(44.5403, -78.5463);
var mapOptions = {
zoom: 4,
center: myLatlng
}
var map = new google.maps.Map(document.getElementById('map_canvas'), mapOptions);
google.maps.event.addListener(map, 'click', function(event) {
addMarker(event.latLng);
});
// add marker to positon
function addMarker(location) {
var marker = new google.maps.Marker({
position: location,
map: map
});
// deleting
google.maps.event.addListener(marker, 'click', function(event) {
this.setMap(null);
});
// adding info window to gMaps
var infowindow = new google.maps.InfoWindow({
content: "holdings content area"
});
google.maps.event.addListener(marker, 'mouseover', function() {
infowindow.open(map, this);
});
// assuming you also want to hide the infowindow when user mouses-out
google.maps.event.addListener(marker, 'mouseout', function() {
infowindow.close();
});
markers.push(marker);
}
// Sets the map on all markers in the array.
function setAllMap(map) {
for (var i = 0; i < markers.length; i++) {
markers[i].setMap(map);
}
}
}
google.maps.event.addDomListener(window, 'load', initialize);
</script>
<!-- google maps Scripting ends -->
</head>
<body>
<div id="map_canvas"></div>
<div id="menu_bar">
</div>
</body>
</html>

First create a menu or popup or whatever you want in a html copy this html into javascript variable, next create gMap infoWindow and set content to your custom design, in last step bind event to your marker and in that event open your infowindow.
var map = new google.maps.Map(document.getElementById('yourmap'), mapOptions);
var popup= '<div>Design your whatever styled popup you want</div>';
var infowindow = new google.maps.InfoWindow({
content: popup
});
var marker = new google.maps.Marker({
position: myLatlng,
map: map,
title: 'ABC'
});
google.maps.event.addListener(marker, 'click', function() {
infowindow.open(map,marker);
});

How do I close an infowindow with Google Maps 3 API?

I've seen the other posts, but they dont have the markers being looped through dynamically like mine. How do I create an event that will close the infowindow when another marker is clicked on using the following code?
$(function(){
var latlng = new google.maps.LatLng(45.522015,-122.683811);
var settings = {
zoom: 10,
center: latlng,
disableDefaultUI:false,
mapTypeId: google.maps.MapTypeId.SATELLITE
};
var map = new google.maps.Map(document.getElementById("map_canvas"), settings);
$.getJSON('api',function(json){
for (var property in json) {
if (json.hasOwnProperty(property)) {
var json_data = json[property];
var the_marker = new google.maps.Marker({
title:json_data.item.headline,
map:map,
clickable:true,
position:new google.maps.LatLng(
parseFloat(json_data.item.geoarray[0].latitude),
parseFloat(json_data.item.geoarray[0].longitude)
)
});
function buildHandler(map, marker, content) {
return function() {
var infowindow = new google.maps.InfoWindow({
content: '<div class="marker"><h1>'+content.headline+'</h1><p>'+content.full_content+'</p></div>'
});
infowindow.open(map, marker);
};
}
new google.maps.event.addListener(the_marker, 'click',buildHandler(map, the_marker, {'headline':json_data.item.headline,'full_content':json_data.item.full_content}));
}
}
});
});

I finally figured it out... no thanks to anyone here... It was actually fairly easy:
First, set up some vars to store the infowindow:
var infowindow;
Then add this to wherever your onClick function is that triggers the other infowindow.open(). Put it above the open though:
if(infowindow) {infowindow.close()}
Inside your loop or however else you are adding markers.
E.g. in full action:
At the very top of my script:
var infowindow;
Inside my loop of adding markers:
function buildHandler(map, marker, content) {
return function() {
if(infowindow) {infowindow.close()}
infowindow = new google.maps.InfoWindow({
content: 'My Content here'
});
infowindow.open(map, marker);
};
}