if(document.form1.radio.value.indexOf("/")==0)
{
alert('除’);
return false;
}
表单名字是form1
单选按钮:<input type="radio" name="radio" id="radio" value="*">
<input type="radio" name="radio" id="radio" value="/">
如何判断我选择了是“/”
{
alert('除’);
return false;
}
表单名字是form1
单选按钮:<input type="radio" name="radio" id="radio" value="*">
<input type="radio" name="radio" id="radio" value="/">
如何判断我选择了是“/”
这样可以么
{
alert('除’);
return false;}
<input type="radio" name="radio" id="radio" value="1">乘
<input type="radio" name="radio" id="radio" value="0">除
<html>
<head>
<script> function sub(){
var radioArr=document.getElementsByName("radio_name");
var val;
for(var i=0;i<radioArr.length;i++){
if(radioArr[i].checked){
val=radioArr[i].value;
break;
}
}
if(val=="*"){
alert("乘");
}else if(val=="/"){
alert("除");
}
}
</script>
</head>
<body>
<input type="radio" name="radio_name" value="*"/>乘
<input type="radio" name="radio_name" value="/"/>除
<input type="button" value="提交" onclick="sub();"/>
</body>
</html>
<input type="radio" name="radio" id="radio" value="/">
<input type="button" value="234" onclick="test()"/>
<script>function test(){
var s = document.getElementsByName('radio');
for(var i = 0; i < s.length; i++) {
if(s[i].checked == true && s[i].value == '/') {
alert('除');
return false;
}
}
}
</script>