getPort() 函数返回 URL 中规定的端口号。
getPort()
n = URL.getPort(url)
var a = URL.getPort("https://cankaoshouce.com:443");var b = URL.getPort("https://cankaoshouce.com");
var a = URL.getPort("https://cankaoshouce.com:443");
var b = URL.getPort("https://cankaoshouce.com");
a = "443"b = ""
a = "443"
b = ""