1

我有这个 HTML 代码

<html>
<head>
<script type="text/javascript">
    window.onload = function(){
    document.getElementById("shipping-method").onchange = function(){
        window.scrollTo(0, 0);
    };
};
</script>
<script>
function calc() {
var subtotal = parseFloat(document.getElementById("subtotal").innerHTML.substring(1));
var shipping = parseInt(document.getElementById("shipping-method").value);
if(shipping == 1) {
    var total = subtotal+6.95;
    document.getElementById("shipping").innerHTML = "$"+6.95;
} else {
    var total = subtotal+17.95;
    document.getElementById("shipping").innerHTML = "$"+17.95;
}
document.getElementById("total").innerHTML = "$"+total;
}
</script>
</head>
<body>
<select  onchange="calc()" class="shipping-method" id="shipping-method">
<option value="">-Choose a shipping method-</option>
<option selected="selected" value="1">normal shipping - $6.95</option>
<option value="2">Priority Shipping - $17.95</option>

</select>
<div class="calculations">
<table>

<tbody><tr>
    <td>Subtotal:</td>
    <td id="subtotal">$97.00</td>
</tr>


<tr>
    <td>Shipping:</td>
    <td id="shipping">$6.95</td>
</tr>



<tr class="total">
    <td>Total:</td>
    <td id="total">$103.95</td>
</tr>
</tbody></table>
</div>
</body>
</html>

下拉菜单位于网页的底部,所以我使用第一个脚本在选择一个选项并获得总数后让用户到达页面顶部,但是两个脚本不能一起工作,我有删除其中一个以使另一个工作,如何使两个脚本一起工作而没有任何冲突,谢谢。

4

2 回答 2

1

试着坚持这个:

function calc() {
var subtotal = parseFloat(document.getElementById("subtotal").innerHTML.substring(1));
var shipping = parseInt(document.getElementById("shipping-method").value);
if(shipping == 1) {
    var total = subtotal+6.95;
    document.getElementById("shipping").innerHTML = "$"+6.95;
} else {
    var total = subtotal+17.95;
    document.getElementById("shipping").innerHTML = "$"+17.95;
}
document.getElementById("total").innerHTML = "$"+total;
}

就在顶部的函数之前:

window.onload = function(){
document.getElementById("shipping-method").onchange = function(){
    window.scrollTo(0, 0);
};
于 2013-04-08T23:00:21.257 回答
1

您正在覆盖 onchange 函数。如果你想做两件事,那就把它们都放在onchange函数中,不要分配两次。

这是一些示例代码(为简洁起见)。

<html>
<head><title>Example</title></head>
<body>
<select id="shipping-method"></select>
<table></table>
<script type="text/javascript">
    function calc() {
        // do calculations here
    }
    document.getElementById("shipping-method").onchange = function(){
        window.scrollTo(0, 0); // scroll to top
        calc(); // call function
    };
</script>
</body>
</html>

请注意,我将 javascript 放在底部以避免访问不存在的元素。

于 2013-04-08T23:01:11.630 回答