Javascript 如何得到input type="radio" 的值？
时间：2008-07-02 来源：wataxi
<script language="JavaScript">
<!--
function chk(){
var obj = document.getElementsByName('imgposition');
for (i=0;i<obj.length;i++){
if (obj[i].checked){ alert(obj[i].value);
return;
}
}
alert('你没选');
}
//-->
</script>
<form name=form1>
<input type="radio" name="imgposition" value="1">
<input type="radio" name="imgposition" value="2">
<input type="radio" name="imgposition" value="3">
</form>
<input type="button" onclick="chk()">
for example:
<INPUT type=radio name="radio" CHECKED>1-10 years old
<INPUT type=radio name="radio">11 years old
<INPUT type=radio name="radio">12-120 years old
This example uses script to detect which radio button the user selects.
<SCRIPT>
function detect()
{
if (radio[0].checked)
alert("You're between 1 and 10 years old.")
else if (radio[1].checked)
alert("You're 11 years old.")
else
alert("You're between 12 and 120 years old.")
}
</SCRIPT>
<!-- function chk(){
var obj = document.getElementsByName('imgposition');
for (i=0;i<obj.length;i++){
if (obj[i].checked){ alert(obj[i].value);
return;
}
}
alert('你没选');
}
//--> </script> <form name=form1> <input type="radio" name="imgposition" value="1"> <input type="radio" name="imgposition" value="2"> <input type="radio" name="imgposition" value="3"> </form> <input type="button" onclick="chk()"> for example:<INPUT type=radio name="radio" CHECKED>1-10 years old<INPUT type=radio name="radio">11 years old<INPUT type=radio name="radio">12-120 years oldThis example uses script to detect which radio button the user selects.<SCRIPT>function detect(){
if (radio[0].checked)
alert("You're between 1 and 10 years old.")
else if (radio[1].checked)
alert("You're 11 years old.")
else
alert("You're between 12 and 120 years old.")
}
</SCRIPT>
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