<script>
window.onload=function(){
var div1=document.getElementById("div1");
var span1=document.getElementById("span1");
var text1=document.getElementById("text1");
var btn1=document.getElementById("btn1");
btn1.onclick=function(){//匿名函数
div1.innerHTML+=span1.innerHTML+text1.value+"<br/>"; //不想换行去掉<br/> 不想内容追加去掉+号
text1.value="";//清除输入框内容
}
}
</script>
</head>
<body>
<div id="div1"></div>
<span id="span1">苍老师:</span>
<input id="text1" type="text"/>
<input id="btn1" type="button" value="提交"/>
</body>
</html>