<script>
var csdn = "abcdedf,aefefaedddfwafaefdfadfefefef,aefaewwwdeeeeeeeeeeeeeee"
var tmp=""
s = Math.floor(csdn.length/5)
for(i=0;i<s;i++)
{
tmp += csdn.substr(i*5,5) + "<br>"
}
tmp += csdn.substr(s*5,csdn.length - s*5)
alert(tmp)
</script>
var csdn = "abcdedf,aefefaedddfwafaefdfadfefefef,aefaewwwdeeeeeeeeeeeeeee"
var tmp=""
s = Math.floor(csdn.length/5)
for(i=0;i<s;i++)
{
tmp += csdn.substr(i*5,5) + "<br>"
}
tmp += csdn.substr(s*5,csdn.length - s*5)
alert(tmp)
</script>
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