javascript - JQuery dynamic update div content, jump by scroll position -

-

i have problem im not able solve in past days. writing simple chat based on php + jquery. have div chat content:

<div class="conversation-message-list" onclick="hideemoticons()">     <div id="note">new message</div>     <div class="conversation-content">         <div class="row">            message         </div>      </div> </div>

with jquery call function refreshchat. selects new messages mysql , appends conversation-content this:

$(".conversation-content").append(data.chat);

chat window scrolling when there many messages. need is: when chat window scrolled @ bottom (user view last message), new message appends , automatic scrolled last message. if user scrolled , new message append, show message (in code id="note") not scroll last message.

in summary, need same function on fb chat - if scrolled up, warning of new message shown in chat window. if chatting , see bottom of chat, new message shown , scrolled on it.

im in vicious circle, tried play $(".conversation-message-list").innerheight() , $(".conversation-message-list").scrolltop() , $(".conversation-message-list")[0].scrollheight) im not able do, need. thank you.

here example of refreshchat function:

function refreshchat() {     var id = "'.$convers_id.'";     var receiver = "'.$system->getfirstname($second_user->full_name).'";     $.getjson("'.$system->getdomain().'/ajax/refreshchat.php?id="+id, function(data) {         if(data.kod != "" && data.kod != " " && data.isnew == "1") {         // here want implement function             $(".conversation-content").append(data.chat);         }     } }

you can check if user's scroll @ bottom of chat container when new message coming , set $(".conversation-message-list").scrolltop() large value (or .scrolltop() value of new message dom element if have access it) scroll @ bottom:

var $chatcontainer = $('.conversation-message-list');  function isscrollatthebottom () {     var scrolltop = $chatcontainer.scrolltop(),             height = $chatcontainer.outerheight();      return scrolltop + height >= $chatcontainer[0].scrollheight; }  function refreshchat() {     var id = "'.$convers_id.'";     var receiver = "'.$system->getfirstname($second_user->full_name).'";     $.getjson("'.$system->getdomain().'/ajax/refreshchat.php?id="+id, function(data) {         if(data.kod != "" && data.kod != " " && data.isnew == "1") {             // here want implement function             $(".conversation-content").append(data.chat);              if (isscrollatthebottom()) {                 $chatcontainer.scrolltop($chatcontainer[0].scrollheight)             }         }     }) }

Comments

Post a Comment

Popular posts from this blog

Load Balancing in Bluemix using custom domain and DNS SRV records -

-
i'm trying load balancing of application in bluemix using custom domain , srv record in dns manager. created own doamin ccbluemix.dynu.com , added custom domain bluemix. created application in region , created route custom domain myapp.ccbluemix.dynu.com deployed same application in uk region , created route custom domain myapp.ccbluemix.dynu.com there well. now whenever user hits route want load balancing between , uk region alternate requests served , uk regions. for created srv records like _http._tcp.ccbluemix.dynu.com srv eu-gb.mybluemix.net [priority: 0] [weight: 50] 10 _http._tcp.ccbluemix.dynu.com srv mybluemix.net [priority: 0] [weight: 50] 10 but nothing happening , i'm not able access application using custom route @ all. if create 'a' record cc-load-bal-app.ccbluemix.dynu.com 75.126.81.68 i can access app using custom route ends hitting server. how can achieve load balancing using srv records? wrong creating srv records here? i read ne...
Read more

oracle - pls-00402 alias required in select list of cursor to avoid duplicate column names -

-
my cursor : select xzis.msisdn msisdn, xzis.in_account_number in_account_number xxobw_zte_in_sync xzis not exists (select 1 hz_contact_points hcp, hz_cust_accounts hca hcp.owner_table_id = hca.party_id , hcp.owner_table_name = 'hz_parties' , hcp.phone_number = substr (xzis.msisdn, -8) , nvl (hca.attribute12, 'nil') = xzis.in_account_number); i have given alias columns, still facing issue. suggestions? it's cursor. 1 has no such problems. problem is, when you're joining 2 tables, or apply wrong aliases in subselect, cursor may @ end return 2 columns same name/alias. the problem not need alias, no 2 columns can have same alias (the name counting alias, when no alias given). apparently has happened, far can tell, it's ...
Read more

python - Consider setting $PYTHONHOME to <prefix>[:<exec_prefix>] error -

-
Image
i getting same error when python manage.py runserver. there no such error when have ubuntu 15.10. got started when upgraded ubuntu 16.04. question might duplicate have tried solution provided question have applied command dpkg --configure -a, have done apt-get update,upgrade,dist-upgrade, clean, -f install. have reinstalled python2.7 , python3 no success though. here screenshot while trying run django application i got after re-installing python please me? bashrc file # ~/.bashrc: executed bash(1) non-login shells. # see /usr/share/doc/bash/examples/startup-files (in package bash-doc) # examples # if not running interactively, don't case $- in *i*) ;; *) return;; esac export pythonhome="/usr/bin/python" echo $virtualenvwrapper_python echo 'tushant' # don't put duplicate lines or lines starting space in history. # see bash(1) more options histcontrol=ignoreboth # append history file, don't overwrite shopt -s histappend # setting h...
Read more