javascript - 如何从 URL 中只获取数字？

Question

我在空白页上有这个 javascript：

Please show this number to your supplier:
<script>
document.write(document.URL);
</script>

所以它显示

"Please show this number to your supplier: http://www.exaple.com/invoices/123456789"

如何仅从 url 中提取数字以便我得到这个？

"Please show this number to your supplier: 123456789"

Answer 1

if (location.search != "")
{
var x = location.search.substr(1).replace(/%2520/g,' ').split(";")
for (var i=0; i<x.length; i++)
{
    var y = x[i].split("=");
    document.write(y[0])
}
}   

Answer 2

document.URL.substring(document.URL.lastIndexOf('/'), document.URL.length);

Answer 3

v = 'http://www.exaple.com/invoices/123456789';
number = v.replace(/[^0-9]/g,"");

console.log( number); //123456789

Answer 4

var patt=/(\d+)$/;
var url=document.URL;
var num=0;
if (url.match(patt)) {
  var num_str=url.match(patt)[1];
  num=parseInt(num_str, 10);
}

$= 字符串结束。

正则表达式。