一个反向引用的问题
<script language= "javascript ">
function abc()
{
var sToChange = "1234 5678 ";
var reMatch = /(d{4}) (d{4})/;
var sNew = sToChange.replace(reMatch, "$2 $1 ");
alert(sNew);
}
</script>
<body onload= "abc() ">
</body>
alert输出的结果应该是5678 1234才对,但这个输出的结果是1234 5678怎么回事?
[解决办法]
script language= "javascript ">
function abc()
{
var sToChange = "1234 5678 ";
var reMatch = /(\d{4}) (\d{4})/;
var sNew = sToChange.replace(reMatch, "$2 $1 ");
alert(sNew);
}
</script>
<body onload= "abc() ">
