                        課程
                    
                        /前端開發(fā)
                        
                            /JavaScript
                        
                        /JavaScript入門篇

求大神幫我看看哪里錯了

<html>
<head>
<title>
ssssssssssss
</title>
<style?type="text/css">
#con{color:red;
?????width:300px;height:200px;
?????border:1px?solid?pink;
}
</style>

</head>
<body>

<div?id="con">堅實的快速健康的驕傲是肯定江蘇曠達看藍精靈</div>

<script?type="text/javascript">

function?qqq()
{
var?k=document.getElementById("con");
k.style.color="green";
}

function?www()
{
var?k=document.getElementById("con");
k.style.height="500px";
?k.style.width="400px";
}

function?eee()
{
var?k=document.getElementById("con");
k.style.display="none";
}

function?rrr()
{
var?k=document.getElementById("con");
k.style.display="block";
}

function?ttt()
{
var?k=document.getElementById("con");
var?this=confirm("重置內容？");
if(this==true)
{
k.removeAttribute("style");
}
}

</script>

<input?type="button"?onclick="qqq()"?value="改變顏色"?/>
<input?type="button"?onclick="www()"?value="改變長寬"?/>
<input?type="button"?onclick="eee()"?value="隱藏文本"?/>
<input?type="button"?onclick="rrr()"?value="顯示文本"?/>
<input?type="button"?onclick="ttt()"?value="重置文本"?/>

</body>


</html>

我用記事本寫得，檢查好幾遍查不出錯誤啊，哎，用360瀏覽器打開，按鈕一個都不好使，顯示不出效果。謝謝啦