``To ensure Google Maps fills the entire height of its parent div, set the

Is there a way to display a Google Map at 100% of the parent div's height? I've noticed that setting the height to 100% makes the map not visible, but if I use a pixel value for the height, the map displays correctly. Are there any tricks or solutions to achieve this? The current method isn't working.

<div class="block halfrect">
    <div id="map" style="height:100%;"></div>
</div>

This method doesn't seem to work.

<div class="block halfrect">
    <div id="map" style="height:590px;"></div>
</div>

Any suggestions or ideas?

htmlcssgoogle-mapsgoogle-maps-api-3maps

Answer №1

source: Mike Williams' Google Maps Javascript API v2 tutorial page regarding the use of percentage height for map divs

When using style="width:100%;height:100%" on your map div, you may notice that the map div has zero height. This occurs because the div attempts to be a percentage of the size of the <body>, but the <body> itself does not have a specific height by default. There are methods to calculate the screen height and apply it as the height of the map div, but a simpler alternative is to adjust the <body> so that its height is 100% of the page. This can be achieved by setting style="height:100%" for both the <body> and the <html>. (It is important to do this for both elements to avoid conflicts where the <body> tries to match the document's height, which is undetermined.)

sample code:

var map;

function initialize() {
  var map = new google.maps.Map(
    document.getElementById("map"), {
      center: new google.maps.LatLng(37.4419, -122.1419),
      zoom: 13,
      mapTypeId: google.maps.MapTypeId.ROADMAP
    });

}
google.maps.event.addDomListener(window, "load", initialize);
html,
body {
  height: 100%;
  width: 100%;
  margin: 0px;
  padding: 0px
}
<script src="https://maps.googleapis.com/maps/api/js"></script>
<div class="block halfrect" style="height:100%">
  <div id="map" style="height:100%;"></div>
</div>

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