我正在寻找一种方法来汇总已通过引用全局数组的下拉菜单动态添加到表中的列值。下面是我编写的代码,这里是运行示例的链接:jsFiddle。我是 JavaScript 新手,我所知道的一切都是我自学的,所以请耐心等待,并提前感谢您的帮助。
<!DOCTYPE html>
<html>
<head>
<title> </title>
<script>
var x= ["",1,2,3,4,5,6,7,8,9,10];
var y= ["",4,6,3,4,5,6,7,8,9,10];
var z= ["",1,2,3,4,5,6,7,8,9,10];
</script>
<script>
function fill(){
var si= document.getElementById('ddone').selectedIndex;
if (si!==0){
var a= x[si];
var b= y[si];
document.getElementById('one').innerHTML=a;
document.getElementById('two').innerHTML=b;
}};
</script>
<script>
function fill2(){
var si2= document.getElementById('ddtwo').selectedIndex;
if(si2!==0){
var c=z[si2];
var d=z[si2];
document.getElementById('three').innerHTML=c;
document.getElementById('four').innerHTML=d;
}};
</script>
<script>
function total(){
var w= parseInt(document.getElementById('one').value,10);
var x= parseInt(document.getElementById('two').value,10);
var y=parseInt(document.getElementById('three').value,10);
var z= parseInt(document.getElementById('four').value,10);
document.getElementById('five').innerHTML=w+y;
document.getElementById('six').innerHTML=x+z;
};
</script>
</head>
<body>
<select id='ddone' onchange= 'fill()'>
<option></option>
<option>1</option>
<option>2</option>
<option>3</option>
<option>4</option>
</select>
<select id='ddtwo' onchange='fill2()'>
<option></option>
<option>1</option>
<option>2</option>
<option>3</option>
<option>4</option>
</select>
<table border=1px width=25%>
<tr>
<td id='one'></td>
<td id='two'></td>
</tr>
<tr>
<td id='three'></td>
<td id='four'></td>
</tr>
<tr>
<td id='five'></td>
<td id='six'></td>
</tr>
</table>
<button id='button' onclick='total()'>total</button>
</body>
</html>