课上练习 script

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<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>无标题文档</title>
</head>

<body>
判断是否是闰年<br />
请输入年份:<input type="number" id="text" /><input type="button" value="检查是否是闰年" onclick="check()" /><br />
<br />
<br />
<br />
<br />
判断是否成年
<br />
请输入年龄:<input type="number" id="age" /><input type="button" value="判断是否成年" onclick="check()" /><br />
<br /><br />
你能跑过豹子么?<input type="text" id="jieguo" /><input type="button" value="你能跑过豹子么" onclick="nengfou()" />
<br />
xyz三个整数,从小到大输出<br />
请输入x:<input type="number" id="x1"/>
请输入y:<input type="number" id="y1" />
请输入z:<input type="number" id="z1" />
<input type="button" value="从小到大输出xyz" onclick="bijiao1()" />

<br />


xyz三个整数,从小到大输出<br />
请输入x:<input type="number" id="x"/>
请输入y:<input type="number" id="y" />
请输入z:<input type="number" id="z" />
<input type="button" value="从小到大输出xyz" onclick="bijiao2()" />
<script>
function bijiao2()
{
var x=document.getElementById("x").value
var y=document.getElementById("y").value
var z=document.getElementById("z").value
if(x!=""&&y!=""&&z!="")
{
if(x%1==0&&y%1==0&&z%1==0)
{
var a
if(x>y)
{
a=y
y=x
x=a
}
if(x>z)
{
a=z
z=x
x=a
}
if(y>z)
{
a=z
z=y
y=a
}

{alert(x+" "+y+" "+z)}
}
else
{
alert("请输入整数")
}
}
else
{
alert("请输入内容")
}
}
</script>

<br />
姓名:<input type="text" id="xingming" /><br />
成绩:<input type="number" id="chengji"/><input type="button" value="jieguo" onclick="chaxun()"/><br />
<script>
function chaxun()
{
var chengji=document.getElementById("chengji").value
var xingming=document.getElementById("xingming").value
if(xingming!=""&&chengji!="")
{
if(chengji>=0&&chengji<=100)
{
if(chengji==100)
{
alert("恭喜你"+xingming+","+"满分通过")
}
else if(chengji>=80&&chengji<100)
{
alert(xingming+","+"你很优秀")
}
else if(chengji>=60&&chengji<80)
{
alert(xingming+","+"你的成绩是良好")
}
else if(chengji>=50&&chengji<60)
{
alert(xingming+","+"再接再厉")
}
else
{
alert(xingming+","+"你是笨蛋么")
}
}
else
{
alert("输入有误")
}
}
else
{
alert("请输入内容")
}
}
</script>
</body>
</html>
<script>
function check()
{
var year=document.getElementById("text").value;
if(year!="")
{
if(year>0&&year<10000)
{
if(year%1==0)
{
if(year%4==0&&year%100!==0 || year%400==0)
{
alert("闰年")
}
else
{
alert("平年")
}
}
else
{
alert("请输入整数")
}
}
else
{
alert("您输入值不在年份范围内")
}
}
else
{
alert("此处不能空白")
}
}
function check()
{
var age=document.getElementById("age").value
if(age!="")
{
if(age>0&&age<150)
{
if(age%1==0)
{
if(age<18)
{
alert("未成年")
}
else
{
alert("成年")
}
}
else
{
alert("整数")
}
}
else
{
alert("超出范围")
}
}
else
{
alert("不能空白")
}

}


function nengfou()
{
var jieguo=document.getElementById("jieguo").value
if(jieguo!="")
{
if(jieguo=="能")
{
alert("你比禽兽还禽兽")
}
else if(jieguo=="不能")
{
alert("你禽兽不如")
}
else
{
alert("输入有误")
}
}
else
{
alert("请输入有效内容")
}
}




function bijiao1()
{
var x1=document.getElementById("x1").value
var y1=document.getElementById("y1").value
var z1=document.getElementById("z1").value
if(x1!=""&&y1!=""&&z1!="")
{
if(x1%1==0&&y1%1==0&&z1%1==0)
{
if(x1>y1&&x1>z1)
{
if(y1>z1)
{
alert(z1+" "+y1+" "+x1)
}
else
{
alert(y1+" "+z1+" "+x1)
}
}
else if(y1>x1&&y1>z1)
{
if(x1>z1)
{
alert(z1+" "+x1+" "+y1)
}
else
{
alert(x1+" "+z1+" "+y1)
}
}
else if(z1>x1&&z1>y1)
{
if(x1>y1)
{
alert(y1+" "+x1+" "+z1)
}
else
{
alert(x1+" "+y1+" "+z1)
}
}
}
else
{
alert("请输入整数")
}
}
else
{
alert("请输入数字")
}
}



</script>

原文地址:https://www.cnblogs.com/20gg-com/p/5803627.html