<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <head> <title>下拉滚动条滚到底部了吗?</title> <script language="javascript" src="js/jquery-1.8.0.min.js"></script> <style type="text/css" media="screen"> #dom_id{ overflow-y:auto; overflow-x:hidden; height:150px; border:1px solid red; width:350px; } html,body{margin:0px;padding:0px;font-family: "微软雅黑";} </style> <body> <div id="dom_id"> <div > <ul id="result"> <li>123123</li> <li>123123</li> <li>123123</li> <li>123123</li> <li>123123</li> <li>123123</li> <li>123123</li> <li>123123</li> </ul> </div> </div> <div class="idDom" id="idDom"> <form action="" method="post" id="de"> <textarea id='sKeys' name='sKeys' rows="2" placeholder="快跟ta互动吧" class="msg-input"></textarea> <input type="button" class="sendmsg-btn enable" id='btnSubmit'value="发送" onclick="" type="reset"> </form> </div> </body> </html> <script> //获取高度 $("#dom_id").scrollTop($("#dom_id")[0].scrollHeight); </script> <script> $(document).ready(function(){ $("#btnSubmit").click(function(){ var txtVal=$("#sKeys").val(); // alert(txtVal); if(txtVal==''){ return false; } // dp1.pushDanmaku(txtVal,"#fff", "right","border:1px solid red",); $.ajax({ //提交数据的类型 POST GET type:"POST", //提交的网址 url:"say.php", //提交的数据 data:{txtVal:txtVal}, //返回数据的格式 datatype: "json",//"xml", "html", "script", "json", "jsonp", "text". //成功返回之后调用的函数 success:function(data){ data =JSON.parse(data); // alert(data.txt); if(data.status=='ok'){ $('#result').append('<li><p>'+data.txt+'</p></li>'); $("#dom_id").scrollTop($("#dom_id")[0].scrollHeight); } }, //调用出错执行的函数 error: function(){ alert('网络忙请重试'); } }); }); }); </script> <!-- 回车键 发言 --> <script> $("#de").keydown(function(e){ var e = e || event, keycode = e.which || e.keyCode; if (keycode==13) { $("#btnSubmit").trigger("click"); } }); // 清空文本 $(document).ready(function(){ $(function(){ $('#btnSubmit:input').click(function(){ $("textarea[name='sKeys']").val("").focus(); }); }); }); </script> say.php <?php header("Content-type:text/html;charset=utf-8"); $txtVal=trim($_POST["txtVal"]); if(!empty($txtVal)){ echo json_encode(array( 'status'=>'ok', 'txt'=>$txtVal, )); }; ?>
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转载自blog.csdn.net/qq_36591333/article/details/79958424
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