为什么不直接用递归呢,像这样
<script>
var a=50
abc(10)
alert(a)
abc(-10)
alert(a)
function abc(num){
a+=num;
if (num >0){if(a<100)abc(num)}
else{if(a>0)abc(num)}
}
</script>
用setTimeout是不是实现某种特殊的效果?
<script>
var a=50
abc(10)
alert(a)
abc(-10)
alert(a)
function abc(num){
a+=num;
if (num >0){if(a<100)abc(num)}
else{if(a>0)abc(num)}
}
</script>
用setTimeout是不是实现某种特殊的效果?
var a=50
abc(10,"alert(a);abc(-10,'alert(a)')")function abc(num,func){
a+=num;
if ((num>0&&a<100)||(num<0&&a>0))
setTimeout("abc("+num+",\""+func+"\")",20)
else
eval(func)
}
</script>
var a=50,num=10;
abc();
function abc(){
a+=num;
if (!(a<100&&a>0)){num=-num;alert(a);}
setTimeout(abc,20)
}
</script>