<script type="text/javascript">
var a=1
for (var i=1;i<99;i++)
{
a++
document.write(a+"< br>")
}</script>
與下列代碼的區(qū)別
<script type="text/javascript">
var a=1
for (var i=1;i< 99;i++)
{
document.write(a+"<br>")
a++
}</script>
1
0
0
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