急问

[sakura169]

curdiscount = document.frm.total.value / document.frm.total1.value;
//document.frm.discount.value = curdiscount * 100;
formatnum = document.frm.item("productprice[]")[i].value * document.frm.item("productquantity[]")[i].value * curdiscount;
formatnum = (formatnum.toFixed(2)*1);
//alert(formatnum);
document.frm.item("subtotal[]")[i].value = formatnum;

为什么传回值是nan

[chinaillboy]

post the full program

[sakura169]

function totaldorecompute()
{
if(!valid_data()) return false;
var item_len = document.all.itemtable.rows.length;
var formatnum = 0;
for (var i=1;i<item_len;i++)
{
if (document.frm.total.value&&document.frm.item("subtotal[]")[i].value){
curdiscount = document.frm.total.value / document.frm.total1.value;
//document.frm.discount.value = curdiscount * 100;
formatnum = document.frm.item("productprice[]")[i].value * document.frm.item("productquantity[]")[i].value * curdiscount;
formatnum = (formatnum.toFixed(2)*1);
//alert(formatnum);
document.frm.item("subtotal[]")[i].value = formatnum;
}
}
}

[sakura169]

传回值是Infinity

[孟子E章]

做之前进行转换：
curdiscount = parseFloat(document.frm.total.value) / parseFloat(document.frm.total1.value);

其余类似

[qiushuiwuhen]

curdiscount = eval(document.frm.total.value+"/ "+document.frm.total1.value);

[qiushuiwuhen]

curdiscount = eval(document.frm.total.value+"/ "+document.frm.total1.value);