為何就是不通過
<!DOCTYPE?HTML><html><head><meta?http-equiv="Content-Type"?content="text/html;?charset=utf-8"?/><title>if...else</title><script?type="text/JavaScript">var?sum=0;for(var?money=1;money<=10;money++;){????sum=money+sun}????document.write('sum')</script></head><body></body></html>
2019-12-20
<script?type="text/JavaScript">???????? var?sum=0;??????? for(var?money=1;money<=10;money++){??????????????? ????sum=money+sum;???????? }???????? document.write(sum);???? </script>for循環(huán)money++后不加分號
變量名要保持一致 -? sum
輸出變量不加引號