stackoverflow AMP autosuggest Answer

gistfile1.txt

To implement autosuggest, AMP examples use endpoints which are developed in node.js. 

1. Declare necessary node.js modules:

var express = require('express');

var app = express();

2. Declare JSON object data as:

const autosuggestData = ["Denver, Colorado","Hartford, Connecticut","Dover, Delaware","Tallahassee, Florida"];

3.

app.use('/advanced/autosuggest/search_list', function(req, res) {

    assertCors(req, res, ['GET']);
    const MAX_RESULTS = 4;
    const query = req.query.q;

    if (!query) {

        res.json({
            items: [{
                query: "",
                results: 
                
                Data.slice(0, MAX_RESULTS)
            }]
        });

    } else {

        const lowerCaseQuery = query.toLowerCase();
        const filtered = autosuggestData.filter(l => l.toLowerCase().includes(lowerCaseQuery));

        res.json({
            query: query,
            items: [{results: filtered.slice(0, MAX_RESULTS)}
            ]});
    }});

app.listen(app.get('port'), function() {

    console.log('Express Started on http://localhost:' + app.get('port') + '');
});