- it
- JS中关于for循环的例题
计算1-100之间不能被7整除的数的和
<script type
="text/javascript">
var b
=0;
for(var a
=1;a
<=100;a
++){
if(a
%7!=0){
b
+=a
;
}
}
document
.write(b
);
</script
>
计算1-100之间能3整除的数的和
<script type
="text/javascript">
var b
=0;
for(var a
=1;a
<=100;a
++){
if(a
%3==0){
b
+=a
;
}
}
document
.write(b
);
</script
>
求1-100之间所有偶数的和
<script type
="text/javascript">
var b
=0;
for (var a
=1;a
<=100;a
++) {
if(a
%2==0) {
b
+=a
;
}
}
document
.write(b
);
</script
>
求1-100之间所有奇数的和
<script type
="text/javascript">
var b
=0;
for (var a
=1;a
<=100;a
++) {
if(a
%2==1){
b
+=a
;
}
}document
.write(b
);
</script
>
求1-100之间所有数的乘积
<script type
="text/javascript">
var b
=1;
for (var a
=1;a
<=100;a
++) {
b
*=a
;
}
document
.write(b
);
</script
>
求1-100之间所有数的和
<script type
="text/javascript">
var b
=0;
for(var a
=1;a
<=100;a
++) {
b
+=a
;
}
document
.write(b
);
</script
>
求1-100之间所有数的平均值
<script type
="text/javascript">
var b
=0;
var c
=0;
for(var a
=1;a
<=100;a
++) {
b
+=a
;
c
=b
/100;
}
document
.write(c
);
</script
>
同时求1-100之间所有偶数和奇数的和
<script type
="text/javascript">
var a
=0;
var b
=0;
var c
=0;
for (var i
=1;i
<=100;i
++) {
if(i
%2==0){
a
+=i
;
}else if(i
%2==1){
b
+=i
;
}
}c
=a
+b
;
document
.write(c
);
</script
>
