while(mynum) 為什么這么寫就對了?mynum=mynum-1; 為什么這樣寫呢?
<script?type="text/javascript"> ????var?mynum?=6;//mynum初值化數(shù)值為6 do { document.write("數(shù)字:"+mynum+"<br/>"); mynum=mynum-1; } while(mynum) </script>
?
<script?type="text/javascript"> ????var?mynum?=6;//mynum初值化數(shù)值為6 do { document.write("數(shù)字:"+mynum+"<br/>"); mynum=mynum-1; } while(mynum) </script>
?
2015-01-08
舉報
2015-01-08
少俠 mynum遞減 當mynum為0的時候 就相當于是false了 跳出循環(huán)
2015-01-15
?當mynum為0的時候 就相當于是false了
不解