📄 s04_15.htm
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<HTML><HEAD><TITLE>适于do while循环的例子</TITLE>
<script language=javascript>
var go_on,x,y,result,answer
do
{
x = Math.floor(Math.random() *90)+10;
y = Math.floor(Math.random() *90)+10;
result = x+y;
answer = parseFloat(prompt(x + "+" + y + "=","0"));
go_on = confirm(((answer==result)?"答对":"答错") +"！\t继续测试吗?")
} while(go_on)
</script>
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