Node.js
클라이언트 - 서버 통신
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/ w Express, jQuery 및 Jade
//'client.jade'
//a button is placed down; similar in HTML
button(type='button', id='send_by_button') Modify data
#modify Lorem ipsum Sender
//loading jQuery; it can be done from an online source as well
script(src='./js/jquery-2.2.0.min.js')
//AJAX request using jQuery
script
$(function () {
$('#send_by_button').click(function (e) {
e.preventDefault();
//test: the text within brackets should appear when clicking on said button
//window.alert('You clicked on me. - jQuery');
//a variable and a JSON initialized in the code
var predeclared = "Katamori";
var data = {
Title: "Name_SenderTest",
Nick: predeclared,
FirstName: "Zoltan",
Surname: "Schmidt"
};
//an AJAX request with given parameters
$.ajax({
type: 'POST',
data: JSON.stringify(data),
contentType: 'application/json',
url: 'http://localhost:7776/domaintest',
//on success, received data is used as 'data' function input
success: function (data) {
window.alert('Request sent; data received.');
var jsonstr = JSON.stringify(data);
var jsonobj = JSON.parse(jsonstr);
//if the 'nick' member of the JSON does not equal to the predeclared string (as it was initialized), then the backend script was executed, meaning that communication has been established
if(data.Nick != predeclared){
document.getElementById("modify").innerHTML = "JSON changed!\n" + jsonstr;
};
}
});
});
});
//'domaintest_route.js'
var express = require('express');
var router = express.Router();
//an Express router listening to GET requests - in this case, it's empty, meaning that nothing is displayed when you reach 'localhost/domaintest'
router.get('/', function(req, res, next) {
});
//same for POST requests - notice, how the AJAX request above was defined as POST
router.post('/', function(req, res) {
res.setHeader('Content-Type', 'application/json');
//content generated here
var some_json = {
Title: "Test",
Item: "Crate"
};
var result = JSON.stringify(some_json);
//content got 'client.jade'
var sent_data = req.body;
sent_data.Nick = "ttony33";
res.send(sent_data);
});
module.exports = router;
// 개인적으로 사용되는 요지에 기초 : https://gist.github.com/Katamori/5c9850f02e4baf6e9896
Modified text is an extract of the original Stack Overflow Documentation
아래 라이선스 CC BY-SA 3.0
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