08/06/30 21:52:45
>>627
これは？
var a=[,'A',,'B','C',,'D','E'];
var res;
for (var i in a) {
if (a[i] == a[3]) {
res = i;
break;
}
}
alert(res);
08/06/30 21:52:45
>>627
これは？
var a=[,'A',,'B','C',,'D','E'];
var res;
for (var i in a) {
if (a[i] == a[3]) {
res = i;
break;
}
}
alert(res);