金额找零 :用输入框输入一个1-100的整数,例如:78=50+20+5+3
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
</head>
<body>
<script type="text/javascript">
function change(){
money = Number(document.form1.txt1.value);
if(money !=parseInt(money/1)|| money<1||money>100)
{
alert("请输入一个1-100的整数");
}
else{
var a=Math.floor(money/50);
var b=Math.floor((money-50*a)/20) ;
var c=Math.floor((money-50*a-20*b)/5);
var d=(money-50*a-20*b-5*c);
alert("找零:"+"50元"+a+"张;20元"+b+"张;5元"+c+"张;1元"+d+"张。");
}
}
</script>
输入要找的零钱:
<form name="form1">
<input name="txt1" type="text"><br>
<input type="button" onclick="change()" value="找零"><br>
</form>
</script>
</body>
</html>
结果展示:
2.五本书的价格:
<html>
<head>
<meta charset="UTF-8">
<title></title>
</head>
<body>
<script type="text/javascript">
function add(){
var n1 =Number(document.form1.txt1.value);
var n2 =Number(document.form1.txt2.value);
var n3 =Number(document.form1.txt3.value);
var n4=Number(document.form1.txt4.value);
var n5 =Number(document.form1.txt5.value);
document.form1.txt6.value = n1+n2+n3+n4+n5;
}
</script>
请分别输入5本书的价格:
<form name="form1">
<input name="txt1" type="text"/><br/>
<input name="txt2" type="text"/><br/>
<input name="txt3" type="text"/><br/>
<input name="txt4" type="text"/><br/>
<input name="txt5" type="text"/><br/>
<input type="button" οnclick="add()" value="总计" /><br/>
<input name="txt6" type="text"/><br/>
</form>
</body>
</html>
结果展示:
3.欢迎
<html>
<head>
<meta charset="UTF-8">
<title></title>
</head>
<body>
<script type="text/javascript">
for(i = 0;i<100;i++){
document.writeln("welcome!")
}
</script>
</body>
</html>
######4.10本书
<html>
<head>
<meta charset="UTF-8">
<title></title>
</head>
<body>
<script type="text/javascript">
function sort(){
var b = new Array(),l=9,account = 0;
for(var i = 0;i<=l;i++){
b[i] = document.getElementById("book" + i).value;
account = account+Number(b[i]);
}
b = b.sort(function(a,b) {return a-b;});
document.st.min.value = b[0];
document.st.max.value = b[9];
document.st.avg.value = account/10;
}
</script>
请分别输入10本书的价格:
<form name="st">
<input id="book0" type="text"><br>
<input id="book1" type="text"><br>
<input id="book2" type="text"><br>
<input id="book3" type="text"><br>
<input id="book4" type="text"><br>
<input id="book5" type="text"><br>
<input id="book6" type="text"><br>
<input id="book7" type="text"><br>
<input id="book8" type="text"><br>
<input id="book9" type="text"><br>
<input type="button" οnclick="sort()" value="确认"><br>
结果为:<br>
最高价格为<input name="max" type="text"><br>
最低价格为<input name="min" type="text"><br>
平均价格为<input name="avg" type="text"><br>
</form>
</body>
</html>