javascript - 添加同一类 javascript 中的所有值

Question

如何获得具有名为 Total 的类的所有值的总值(value)

<script>
function gettotal()
{

var total = 12;

}
</script>

<input type=text class=total value=5>
<input type=text class=total value=7>
<input type=submit  name=submit value="Add" onclick=gettotal();>

Answer 1

你可以这样做:

var total = 0;
var totalElems = document.getElementsByClassName("total");
for (var i = 0; i < totalElems.length; i++) {
    total += parseInt(totalElems[i].value, 10);
}