聊天框，自动滚动到底部
[英] Chat box, auto scroll to bottom
本文介绍了聊天框，自动滚动到底部的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
如何自动滚动聊天框
HTML:
<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta name="robots" content="noindex"><title>大学咨询聊天</title><meta name="viewport" content="width=device-width, initial-scale=1"><link href="assets/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css"><script src="assets/js/jquery-1.10.2.min.js"></script><script src="assets/js/bootstrap.min.js"></script><script type="text/javascript">window.alert = function(){};var defaultCSS = document.getElementById('bootstrap-css');功能改变CSS(CSS){if(css) $('head > link').filter(':first').replaceWith('<link rel="stylesheet" href="'+ css +'" type="text/css"/>');else $('head > link').filter(':first').replaceWith(defaultCSS);}<身体><div class="panel panel-primary" style="border:0px"><div class="panel-heading top-bar"><div class="col-md-8 col-xs-8"><h3 class="panel-title"><span class="glyphicon glyphicon-comment" style="margin-right:6px;"></span>大学咨询聊天</h3>
<div class="panel-body msg_container_base"><div class="row msg_container base_sent"><div class="col-md-10 col-xs-10"><div class="messages msg_sent"><p>mongodb 的东西看起来不错，是吧?微小的主数据库和巨大的文档存储</p>
<div class="row msg_container base_receive"><div class="col-md-10 col-xs-10"><div class="messages msg_receive"><p>mongodb 的东西看起来不错，是吧?微小的主数据库和巨大的文档存储</p>
<聊天记录>.</chat_log>
<!--聊天用户框--><div class="panel-footer"><div class="input-group" id="myForm"><input id="btn-input" type="text" class="form-control input-sm chat_input" placeholder="在此处写下您的消息..."><span class="input-group-btn"><button class="btn btn-primary btn-sm" id="submit" type="submit">发送</button></span></表单>
Javascript:
<脚本>$("#submit").click(function() {var data = $("#btn-input").val();//console.log(数据);$('chat_log').append('<div class="row msg_container base_sent"><div class="col-md-10 col-xs-10"><div class="messages msg_receive"><p>'+data+'</p></div></div></div><div class="row msg_container base_receive"><div class="col-md-10 col-xs-10"><div class="messages msg_receive"><p>'+data+'</p></div></div></div>');清除输入()；});函数清除输入(){$("#myForm :input").each(function() {$(this).val('');//隐藏表单值});}$("#myForm").submit(function() {返回假；//防止重定向到save.php});
CSS:
.msg_container_base{背景:#e5e5e5；边距:0；填充:0 10px 10px；最大高度:80vh；溢出-x:隐藏；}.顶栏{背景:#666；白颜色;填充:10px；位置:相对；溢出:隐藏；}.msg_receive{填充左:0;左边距:0;}.msg_sent{填充底部:20px！重要；边距右:0;}.messages {背景:白色；填充:10px；边界半径:2px；box-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);最大宽度:100%；}.messages >p{字体大小:13px；边距:0 0 0.2rem 0；}.messages >时间 {字体大小:11px；颜色:#ccc;}.msg_容器{填充:10px；溢出:隐藏；显示:弹性；}图像{显示:块；宽度:100%；}.头像{位置:相对；}.base_receive >.头像:在{之后内容: "";位置:绝对；顶部:0；右:0；宽度:0；高度:0；边框:5px 实心 #FFF；边框左颜色:rgba(0, 0, 0, 0);边框底部颜色:rgba(0, 0, 0, 0);}.base_sent {justify-content: flex-end;align-items: flex-end;}.base_sent >.头像:在{之后内容: "";位置:绝对；底部:0；左:0；宽度:0；高度:0；边框:5px纯白色；边框右色:透明；边框顶部颜色:透明；box-shadow: 1px 1px 2px rgba(black, 0.2);//不是很完美但很接近}.msg_sent >时间{浮动:对；}.msg_container_base::-webkit-scrollbar-track{-webkit-box-shadow: 插入 0 0 6px rgba(0,0,0,0.3);背景色:#F5F5F5；}.msg_container_base::-webkit-scrollbar{宽度:12px；背景色:#F5F5F5；}.msg_container_base::-webkit-scrollbar-thumb{-webkit-box-shadow: 插入 0 0 6px rgba(0,0,0,.3);背景色:#555；}.btn-group.dropup{位置:固定；左:0px;底部:0;}
以下代码功能显示，用户输入什么，点击发送时，用户会看到，他发送的消息有两种方式..一种在发送和;收到表格.
有没有办法自动滚动到底部
解决方案
将此添加到您的代码中:
$(".msg_container_base").stop().animate({ scrollTop: $(".msg_container_base")[0].scrollHeight}, 1000);
所以提交点击函数看起来像这样:
$("#submit").click(function() {var data = $("#btn-input").val();//console.log(数据);$('chat_log').append('<div class="row msg_container base_sent"><div class="col-md-10 col-xs-10"><div class="messages msg_receive"><p>'+data+'</p></div></div></div><div class="row msg_container base_receive"><div class="col-md-10 col-xs-10"><div class="messages msg_receive"><p>'+data+'</p></div></div></div>');清除输入()；$(".msg_container_base").stop().animate({ scrollTop: $(".msg_container_base")[0].scrollHeight}, 1000);});
JSFiddle 演示
How to auto scroll chat box
HTML:
<!DOCTYPE html>
<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<meta name="robots" content="noindex">
<title>College Enquiry Chat</title>
<meta name="viewport" content="width=device-width, initial-scale=1">
<link href="assets/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css">
<script src="assets/js/jquery-1.10.2.min.js"></script>
<script src="assets/js/bootstrap.min.js"></script>
<script type="text/javascript">
window.alert = function(){};
var defaultCSS = document.getElementById('bootstrap-css');
function changeCSS(css){
if(css) $('head > link').filter(':first').replaceWith('<link rel="stylesheet" href="'+ css +'" type="text/css" />');
else $('head > link').filter(':first').replaceWith(defaultCSS);
}
</script>
</head>
<body>
<div class="panel panel-primary" style="border:0px">
<div class="panel-heading top-bar">
<div class="col-md-8 col-xs-8">
<h3 class="panel-title"><span class="glyphicon glyphicon-comment" style="margin-right:6px;"></span>College Enquiry Chat</h3>
</div>
</div>
<div class="panel-body msg_container_base">
<div class="row msg_container base_sent">
<div class="col-md-10 col-xs-10">
<div class="messages msg_sent">
<p>that mongodb thing looks good, huh?
tiny master db, and huge document store</p>
</div>
</div>
</div>
<div class="row msg_container base_receive">
<div class="col-md-10 col-xs-10">
<div class="messages msg_receive">
<p>that mongodb thing looks good, huh?
tiny master db, and huge document store</p>
</div>
</div>
</div>
<chat_log> . </chat_log>
</div>
<!--CHAT USER BOX-->
<div class="panel-footer">
<div class="input-group" id="myForm">
<input id="btn-input" type="text" class="form-control input-sm chat_input" placeholder="Write your message here...">
<span class="input-group-btn">
<button class="btn btn-primary btn-sm" id="submit" type="submit">Send</button>
</span>
</form>
</div>
</div>
</div>
</div>
</div>
</div>
Javascript:
<script>
$("#submit").click(function() {
var data = $("#btn-input").val();
//console.log(data);
$('chat_log').append('<div class="row msg_container base_sent"><div class="col-md-10 col-xs-10"><div class="messages msg_receive"><p>'+data+'</p></div></div></div><div class="row msg_container base_receive"><div class="col-md-10 col-xs-10"><div class="messages msg_receive"><p>'+data+'</p></div></div></div>');
clearInput();
});
function clearInput() {
$("#myForm :input").each(function() {
$(this).val(''); //hide form values
});
}
$("#myForm").submit(function() {
return false; //to prevent redirection to save.php
});
</script>
CSS :
.msg_container_base{
background: #e5e5e5;
margin: 0;
padding: 0 10px 10px;
max-height:80vh;
overflow-x:hidden;
}
.top-bar {
background: #666;
color: white;
padding: 10px;
position: relative;
overflow: hidden;
}
.msg_receive{
padding-left:0;
margin-left:0;
}
.msg_sent{
padding-bottom:20px !important;
margin-right:0;
}
.messages {
background: white;
padding: 10px;
border-radius: 2px;
box-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
max-width:100%;
}
.messages > p {
font-size: 13px;
margin: 0 0 0.2rem 0;
}
.messages > time {
font-size: 11px;
color: #ccc;
}
.msg_container {
padding: 10px;
overflow: hidden;
display: flex;
}
img {
display: block;
width: 100%;
}
.avatar {
position: relative;
}
.base_receive > .avatar:after {
content: "";
position: absolute;
top: 0;
right: 0;
width: 0;
height: 0;
border: 5px solid #FFF;
border-left-color: rgba(0, 0, 0, 0);
border-bottom-color: rgba(0, 0, 0, 0);
}
.base_sent {
justify-content: flex-end;
align-items: flex-end;
}
.base_sent > .avatar:after {
content: "";
position: absolute;
bottom: 0;
left: 0;
width: 0;
height: 0;
border: 5px solid white;
border-right-color: transparent;
border-top-color: transparent;
box-shadow: 1px 1px 2px rgba(black, 0.2); // not quite perfect but close
}
.msg_sent > time{
float: right;
}
.msg_container_base::-webkit-scrollbar-track
{
-webkit-box-shadow: inset 0 0 6px rgba(0,0,0,0.3);
background-color: #F5F5F5;
}
.msg_container_base::-webkit-scrollbar
{
width: 12px;
background-color: #F5F5F5;
}
.msg_container_base::-webkit-scrollbar-thumb
{
-webkit-box-shadow: inset 0 0 6px rgba(0,0,0,.3);
background-color: #555;
}
.btn-group.dropup{
position:fixed;
left:0px;
bottom:0;
}
Following code functions shows, what user input and when click on send, user will see, his sended messaged in two way.. one in sended & received form.
Is there a way to auto-scroll to bottom
解决方案
Add this to your code:
$(".msg_container_base").stop().animate({ scrollTop: $(".msg_container_base")[0].scrollHeight}, 1000);
So the submit click function looks like this:
$("#submit").click(function() {
var data = $("#btn-input").val();
//console.log(data);
$('chat_log').append('<div class="row msg_container base_sent"><div class="col-md-10 col-xs-10"><div class="messages msg_receive"><p>'+data+'</p></div></div></div><div class="row msg_container base_receive"><div class="col-md-10 col-xs-10"><div class="messages msg_receive"><p>'+data+'</p></div></div></div>');
clearInput();
$(".msg_container_base").stop().animate({ scrollTop: $(".msg_container_base")[0].scrollHeight}, 1000);
});
JSFiddle DEMO
这篇关于聊天框，自动滚动到底部的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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