js实现聊天对话框
本文实例为大家分享了js实现聊天对话框的具体代码,供大家参考,具体内容如下
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title></title> <style type="text/css"> .box{ width:300px; height:400px; border:1px solid blue; margin:0 auto; } .inTer{ width:280px; height:280px; border:1px solid deeppink; margin:0 auto; margin-top:10px; overflow-y:auto; } textarea{ display:block; width: 276px; height:65px; margin:0 auto; margin-top:5px; } #btn{ display:block; float:right; margin-right:10px; margin-top:5px; } p{ display:inline-block; border-radius:5px; background:#dcdcdc; font-size:12px; padding:5px 5px; margin:5px 0; margin-left:5px; max-width:140px; word-wrap: break-word; } </style> </head> <body> <div class="box"> <div class="inTer" id="father"> <p>你好</p ></br> <p>你好</p ></br> <p>你好</p ></br> <p>heiheiheiheiehieheieheieheieheiheiehe</p ></br> </div> <textarea style="resize: none;" id="txt"> </textarea> <input type="button" id="btn" value="发送" /> </div> </body> </html> <script> var btn = document.getElementById("btn"); var txt = document.getElementById("txt"); var father = document.getElementById("father") var p = document.getElementsByTagName("p"); btn.onclick=function(){ if(txt.value==""){ alert("请勿发送空内容"); } else{ var son = document.createElement("p"); son.style.backgroundColor="yellowgreen"; son.style.clear="both"; son.style.float="right"; son.style.marginRight="5px"; son.innerText=txt.value; father.appendChild(son); txt.value=""; son.scrollIntoView(); } } document.onkeydown=function(evt){ var e = evt || event; e.keyCode=e.which=e.charCode; if(e.keyCode==13 || e.keyCode==10){ if(txt.value==""){ alert("请勿发送空内容"); } else{ var son = document.createElement("p"); son.style.backgroundColor="yellowgreen"; son.style.clear="both"; son.style.float="right"; son.style.marginRight="5px"; son.innerText=txt.value; father.appendChild(son); txt.value=""; son.scrollIntoView(); } } } </script>
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持我们。
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