Get the value of radio with a selector in jquery

using jquery to get the value of radio, the most important thing is to master the use of jquery selectors, in a form we usually want to get the value of the selected radio item, so add checked to filter, for example, there are some of the following radio items:

1.<input type= "Radio" name= "Testradio" value= "jquery Get Radio Value"/>jquery Get Radio value
2.<input type= "Radio" name= "Testradio" value= "jquery Gets the value of the checkbox"/>jquery get the value of the checkbox
3.<input type= "Radio" name= "Testradio" value= "jquery Gets the value of select"/>jquery get the value of select

To get the value of a radio, there are several ways to give the code directly:
1.$ (' input[name= ' Testradio "]:checked '). Val ();
2.$ (' input:radio:checked '). Val ();
3.$ (' input[@name = ' testradio '][checked] ');
4.$ (' input[name= ' Testradio "]). Filter (': Checked ');

If we are going to iterate through all the radio name Testradio, the code is as follows
1.$ (' input[name= ' Testradio "] '). each (function () {
alert (this.value);
});
If you want to take the value of a specific radio, such as the value of a second radio, write
2.$ (' input[name= ' Testradio "]:eq (1) '). Val ()

Get the value of radio with a selector in jquery