php - Chat box Scroll to Down always to last line -


i new jo jquery php , sql programmer. have created custom chat system in newely created website. now, working good. wish keep scroll last message always. have tried many codes stackoverflow. no 1 working. found 1 code works perfect. want make bit change in it. if can me here code is

window.setinterval(function() {   var elem = document.getelementbyid('chat');   elem.scrolltop = elem.scrollheight; }, 1000);

this working perfect me. puts user bottom scroll , keep automatically scrolling down time interval of 1 second.

but issue facing when want read old messages scroll top manually. not allowing me so. keeps self bottom. please 1 can make changes in if manually scroll up, auto scroll stop.

hope soon


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