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<title>一个字符串的各项反转顺序</title>
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<script type="text/javascript">
var str='123456789';
//字符串反转，首先把字符串转成数组，然后reverse进行反转，然后toString转化为字符串
function reverseStr(str){
//首先用分隔符把字符串转成数组
var a=str.split('');
//然后进行反转,最后再转成字符串
var strs=a.reverse().toString();
return strs
}
alert(reverseStr(str))
</script>
</html>
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