js_apicalling.js

function httpGetAsync(theUrl, callback) {
	    var xmlHttp = new XMLHttpRequest();
	    xmlHttp.onreadystatechange = function() {
	        if (xmlHttp.readyState == 4 && xmlHttp.status == 200)
	            callback(xmlHttp.responseText);
	    }
	    xmlHttp.open("GET", theUrl, true); // true for asynchronous
	    xmlHttp.send(null); 
	}

	httpGetAsync('http://127.0.0.1:5000/store', function(response) {
		alert(response);
	})