实例
<!doctype html>
<html>
<head>
<meta charset=UTF-8>
<meta name=Generator content=baidu.com>
<meta name=Author content=作者>
<meta name=Keywords content=关键词>
<meta name=Description content=文档描述信息>
<!-- <link rel="stylesheet" type="text/css" href="css/">
<link rel="icon" type="image/x-icon" href="img/标题logo">
<script type="text/javascript" src=""></script> -->
<style type="text/css">
*{margin:0;padding:0;}
</style>
<title>弹窗</title>
</head>
<body>
<script>
var x=58;
if(x==100){
alert("甲！学霸级，满分")
}else if(x>=90){
alert("乙！距离满分只差一点点")
}else if(x>=80){
alert("丙！加油，进步很快")
}else if(x>=70){
alert("丁！没事多看看书吧，")
}else if(x>=60){
alert("及格")
}else{alert("不及格，需要加油！")}
</script>
</body>
</html>运行实例 »
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