為什么無法輸出
<!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">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>break</title>
<script type="text/JavaScript">
var mynum =new Array(70,80,66,90,50,100,89);//定義數(shù)組mynum并賦值
var i=0;
while(i<mynum.lenght)
{
? ? if(mynum[i]<60){
? ? ? ? document.write("成績"+mynum[i]+"不及格，不用循環(huán)了"+"<br>");
? ? ? ? break;
? ? }
? ? document.write("成績:"+mynum[i]+"及格，繼續(xù)循環(huán)"+"<br>");
? ? i=i+1;
}
</script>
</head>
<body>
</body>
</html>
2016-11-06
while(i<mynum.lenght)，length拼錯(cuò)了