<script type="text/javascript">
var mystr="Hello World!"
document.write(mystr.substring(6)+ "<br />");
document.write(mystr.substring(0,6) );
</script>
举报
0/150
提交
取消
<script type="text/javascript">
var mystr="Hello World!"
document.write(mystr.substring(6)+ "<br />");
document.write(mystr.substring(0,6) );
</script>
2014-08-26
举报
