How to get lat/long using Google address autocompete api using Javascript or jQuery?

To get latitude and longitude using Google maps api and Javascript, use the below code with scripts

<script src="http://maps.googleapis.com/maps/api/js?Key=APIKey&libraries=places" type="text/javascript"></script>

<script type="text/javascript">
    function initialize() {
        var input = document.getElementById('SearchTerm');
        var autocomplete = new google.maps.places.Autocomplete(input);

        google.maps.event.addListener(autocomplete, 'place_changed', function () {
            var place = autocomplete.getPlace();  
            // get lat/long using place.geometry.location      
            document.getElementById('latitude').value = place.geometry.location.lat();
            document.getElementById('longitude').value = place.geometry.location.lng();
         
        });
    }
    google.maps.event.addDomListener(window, 'load', initialize); 
</script>

Considering your HTML as below

<input id="SearchTerm" type="text" placeholder="Enter a location to get lat/long" autocomplete="on" />  <br/>
Lat : <input type="text" id="latitude" name="latitude" /> <br/>
Long : <input type="text" id="longitude" name="longitude" />  <br/>

Do not forget to replace APIKey with your google api key to make it work.