打印1-100之间的奇数
<script>
let b = 0;
for (var i = 1; i < 100; i++) {
if (i % 2 !=0) {
document.write(i)
b = b + i;
}
}
console.log(b);
</script>
打印1-100之间不能被三整除的数
<script>
var a = 0;
for (var i = 1; i < 100; i++) {
if (i % 3 != 0) {
document.write(i);
a += i;
}
} console.log(a);
</script>