为什么提交的时候出现两次跳动的结果
<script type="text/javascript">
var mynum=Math.random();
var mynub=mynum*10;
document.write(mynum+"<br>")
document.write(mynub+"<br>")
document.write(Math.round(mynub))
</script>
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<script type="text/javascript">
var mynum=Math.random();
var mynub=mynum*10;
document.write(mynum+"<br>")
document.write(mynub+"<br>")
document.write(Math.round(mynub))
</script>
2017-08-01
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