analyzer.html

<!DOCTYPE html>
<html>
    <head>
        <!-- <script src="./build.js"></script> -->
        <script src="https://apis.google.com/js/api.js"></script>
        <script>
            function start() {
            // 2. Initialize the JavaScript client library.
            gapi.client.init({
                'apiKey': 'AIzaSyCwgHoouSj6djXwYAsu7FKUra8140oqDNA',
                // Your API key will be automatically added to the Discovery Document URLs.
                'discoveryDocs': ['https://language.googleapis.com/$discovery/rest?version=v1']
            }).then(function() {
                // 3. Initialize and make the API request.
                return gapi.client.language.documents.analyzeSentiment({
                    'document': {
                            'type': 'PLAIN_TEXT',
                            'content': 'I am so happy'
                        }});
            }).then(function(response) {
                console.log(response.result);
            }, function(reason) {
                console.log('Error: ' + reason.result.error.message);
            });
            };
            // 1. Load the JavaScript client library.
            gapi.load('client', start);
        </script>
    </head>
    <body>

    </body>
</html>