JS gets the value in the Radio box

RT, if you want to get the value inside the radio box, how to get it.

<script>window.onload = function () {//gets  Getelementsbyname//var obj = Document.getelementsbyname by name (" Fruit ");//Get  Getelementsbytagnamevar obj = document.getelementsbytagname (" Input ") via the tag;    for (var i=0; i<obj.length; i + +) {        if (obj[i].checked) {            alert (obj[i].value);}}    } </script><form><input type= "Radio"  name = "Fruit" value= "apple" checked> Apple <input type= " Radio "  name =" Fruit "value=" banana "> Banana <input type=" Radio "  name =" Fruit "value=" pear "> Pear </form >

Knowledge Points:

1, get the element list by the name of the element

var obj = document.getelementsbyname ("fruit");

2, get the list of elements by the name of the tag

var obj = document.getelementsbytagname ("input");

3, whether to select

obj[i].checked;

4, the value in the Radio box

Obj[i].value;

JS gets the value in the Radio box