update news after a regular period of time

Question

I am working on new app in javascript. What I need is that whenever latest news is added to the database at the backend then the front end should know about it and update that area asynchrnously. What is the best and efficient way to achieve this in JavaScript and/or jQuery?

score 2 · Accepted Answer · answered Aug 14 '13 at 05:47

2

I would recommend using long polling. With a quick Google search you should be able to get up and running. For example here.

answered Aug 14 '13 at 05:47

Shane Haw

723
9
22

I don't think long polling is needed there if one request per 30 seconds should be enough, and immediate respond to new data is not forced. But long polling also can be an option as well. – Jan.J Aug 14 '13 at 06:05

score 0 · Answer 2 · answered Aug 14 '13 at 05:47

0

use Window.setInterval() to reload the page for specific interval of time so that the news gets updated

answered Aug 14 '13 at 05:47

Ramki

166
1
12

Tushar Gupta - curioustushar · Answer 3 · 2013-08-14T05:52:38.593

0

$.ajax Documentation

make a function get_news which contains ajax request which well get updated content from the server.

setInterval(get_news, 1000) will call the function get_news after every 1000 ms

function get_news() {
    $.ajax({
        type: "POST",
        url: url,
        data: data,
        success: function (data) {
            $('#content').html(data);
        }
        dataType: dataType
    });
}

setInterval(get_news, 1000); //1000 ms

edited Aug 14 '13 at 05:52

answered Aug 14 '13 at 05:47

Tushar Gupta - curioustushar

58,085
24
103
107

Is it efficient to use setInterval() function? – Om3ga Aug 14 '13 at 05:50
@2619 yes setInterval() is efficient – Tushar Gupta - curioustushar Aug 14 '13 at 05:54
@VAGABOND waiting for your answer. – Om3ga Aug 14 '13 at 06:02

update news after a regular period of time

3 Answers3