javascript - Change html text based on node.js server setTimeout() -


how 1 change text of div string of text after period of time using node.js , settimeout function?

the main caveat text should changed users @ same time.

let's h2 title on index page "welcome page."

5 seconds later (after server time, not after time of request), h2 title should change "let's started."

if request came in 6 seconds after server started, should see "let's started." , never see "welcome page." since h2 title should have been universally changed.

any guidance hugely appreciated.

here may try (express + socketio 1.0 example):

server.js:

var app    = require('express')(); var server = require('http').createserver(app); var io     = require('socket.io')(server);  server.listen(80);  var dir = __dirname;  app.get('/', function(req, res) {     res.sendfile(dir + '/index.html'); });  var header = 'welcome page.'; settimeout(function() {     header = 'let\'s started.';     io.emit('change_header', {         header: header     }); }, 5000);  io.on('connection', function(socket) {     socket.emit('change_header', {         header: header     }); });

index.html:

<!doctype html> <html> <head> <script src="/socket.io/socket.io.js"></script> <script> document.addeventlistener('domcontentloaded', function() {     var socket = io();     socket.on('change_header', function(data) {         document.getelementbyid('header').innerhtml = data.header;     }); }); </script> </head> <body>      <h2 id="header"></h2>  </body> </html>

Comments

Post a Comment

Popular posts from this blog

commonjs - How to write a typescript definition file for a node module that exports a function? -

consider, toml node module can use: // toml.d.ts declare module toml { export function parse(value:string):any; } declare module "toml" { export = toml; } then: /// <reference path="../../../../../defs/toml/toml.d.ts"/> import toml = require('toml'); toml.parse(...); however, node module export single function, such 'glob' ( https://github.com/isaacs/node-glob ). the node usage of module be: var glob = require("glob") glob("*.js", {}, callback(err, files) { ... }); you'd naively expect this: // glob.d.ts declare function globs(paths:string, options:any, callback:{(err:any, files:string[]):void; ...but because typescripts 'import' semantics bit strange, seems can use 'import .. = require()' statement alias modules . trying call: /// <reference path="../../../../../defs/glob/glob.d.ts"/> import blog = require('glob'); results in: error ts2072: mod...
Read more

openid - Okta: Failed to get authorization code through API call -

i'm integrating okta own idp server using okta's api. i'm implementing authorization code flow following steps below: in own server, use /api/v1/authn endpoint sessiontoken. use sessiontoken obtain authorization calling endpoint: /oauth2/v1/authorize?client_id=" + clientid + "&sessiontoken=" + sessiontoken + "&response_type=code&response_mode=query&scope=openid&redirect_uri=" + redirecturl + "&state=evanyang&nonce=" it's supposed return response status code 302 , location header containing redirect url code value. however, keep getting response status code 200 , without location header, html body saying "you using unsupported browser." , "javascript disabled on browser." according api documentation: http://developer.okta.com/docs/api/resources/oidc.html#authentication-request , sessiontoken parameter sufficient this: an okta one-time sessiontoken. allows api-based ...
Read more

ios - Change Storyboard View using Seague -

i have following code checks connection server, , depending on want change views if no connection found. nsstring *connect = [nsstring stringwithcontentsofurl:[nsurl urlwithstring:@"http://myserver.com"] encoding:nsutf8stringencoding error:nil]; if (connect == null) { [self performseguewithidentifier:@"network_failure" sender:self]; } else { // other code here } my problem not change views. have added storyboard segue between 2 views identifier of network_failure . not have navigation controller or that, problem? thanks help! no not problem. first of all, in objectivec exists nil object oriented null . must use that. so: if(connect == nil) or better: if(!connect) so due fact nil not same of null , probably code does't enter in if scope . you have been able discover breakpoint. anyway: be sure set trigger segue (line) 2 view controller , , name network_failure (that not best name. should instead view1toview2 ) as, m...
Read more