<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" > |
<html> |
<head> |
<title> if 判断结构</title> |
</head> |
|
<body> |
<script type= "text/javascript" > |
//var b = confirm("确定吗?"); |
var b = prompt( "请输入值" , "" ); |
var day = b; |
|
if ( 1 == day ){ //注意if(day = 1) 建议把常量写在前面 |
alert( "星期一" ); |
} else if ( day == 2 ){ |
alert( "星期二" ); |
} else if ( day == 3 ){ |
alert( "星期三" ); |
} else if ( day == 4 ){ |
alert( "星期四" ); |
} else if ( day == 5 ){ |
alert( "星期五" ); |
} else if ( day == 6 ){ |
alert( "星期六" ); |
} else if ( day == 7 ){ |
alert( "星期日" ); |
} else { |
alert( "错误的天数" ); |
} |
|
</script> |
</body> |
</html> |