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Retrieving Autocomplete Predictions

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Page Summary

This code sample demonstrates how to use the Google Maps Places Autocomplete Service to predict places based on a partial query.
It fetches query predictions for the input "pizza near Syd" and displays them in an HTML list.
The sample utilizes both TypeScript and JavaScript implementations, showcasing how to retrieve and display predictions programmatically.
You can interact with the sample using provided links to JSFiddle.net and Google Cloud Shell, or clone and run it locally following instructions for Git and Node.js.

This example executes a query prediction request for the phrase "pizza near Syd" and displays the results as an HTML list.

Read the documentation.

[フレーム]

TypeScript

// This example retrieves autocomplete predictions programmatically from the
// autocomplete service, and displays them as an HTML list.
// This example requires the Places library. Include the libraries=places
// parameter when you first load the API. For example:
// <script src="https://maps.googleapis.com/maps/api/js?key=YOUR_API_KEY&libraries=places">
functioninitService():void{
constdisplaySuggestions=function(
predictions:google.maps.places.QueryAutocompletePrediction[]|null,
status:google.maps.places.PlacesServiceStatus
){
if(status!=google.maps.places.PlacesServiceStatus.OK||!predictions){
alert(status);
return;
}
predictions.forEach((prediction)=>{
constli=document.createElement("li");
li.appendChild(document.createTextNode(prediction.description));
(document.getElementById("results")asHTMLUListElement).appendChild(li);
});
};
constservice=newgoogle.maps.places.AutocompleteService();
service.getQueryPredictions({input:"pizza near Syd"},displaySuggestions);
}
declareglobal{
interfaceWindow{
initService:()=>void;
}
}
window.initService=initService;index.ts

JavaScript

// This example retrieves autocomplete predictions programmatically from the
// autocomplete service, and displays them as an HTML list.
// This example requires the Places library. Include the libraries=places
// parameter when you first load the API. For example:
// <script src="https://maps.googleapis.com/maps/api/js?key=YOUR_API_KEY&libraries=places">
functioninitService(){
constdisplaySuggestions=function(predictions,status){
if(status!=google.maps.places.PlacesServiceStatus.OK||!predictions){
alert(status);
return;
}
predictions.forEach((prediction)=>{
constli=document.createElement("li");
li.appendChild(document.createTextNode(prediction.description));
document.getElementById("results").appendChild(li);
});
};
constservice=newgoogle.maps.places.AutocompleteService();
service.getQueryPredictions({input:"pizza near Syd"},displaySuggestions);
}
window.initService=initService;index.js

CSS

style.css

HTML

<html>
 <head>
 <title>Retrieving Autocomplete Predictions</title>
 <link rel="stylesheet" type="text/css" href="./style.css" />
 <script type="module" src="./index.js"></script>
 </head>
 <body>
 <p>Query suggestions for 'pizza near Syd':</p>
 <ul id="results"></ul>
 <!-- Replace Powered By Google image src with self hosted image. https://developers.google.com/maps/documentation/places/web-service/policies#other_attribution_requirements -->
 <img
 class="powered-by-google"
 src="https://storage.googleapis.com/geo-devrel-public-buckets/powered_by_google_on_white.png"
 alt="Powered by Google"
 />
 <!-- 
 The `defer` attribute causes the script to execute after the full HTML
 document has been parsed. For non-blocking uses, avoiding race conditions,
 and consistent behavior across browsers, consider loading using Promises. See
 https://developers.google.com/maps/documentation/javascript/load-maps-js-api
 for more information.
 -->
 <script
 src="https://maps.googleapis.com/maps/api/js?key=AIzaSyB41DRUbKWJHPxaFjMAwdrzWzbVKartNGg&callback=initService&libraries=places&v=weekly"
 defer
 ></script>
 </body>
</html>index.html

Clone Sample

Git and Node.js are required to run this sample locally. Follow these instructions to install Node.js and NPM. The following commands clone, install dependencies and start the sample application.

gitclone-bsample-places-querypredictionhttps://github.com/googlemaps/js-samples.git
cdjs-samples
npmi
npmstart

Other samples can be tried by switching to any branch beginning with sample-SAMPLE_NAME.

gitcheckoutsample-SAMPLE_NAME
npmi
npmstart