Question

onchange选项值计算价格$price是当前值和当前选项值0; 如果更改选项值则计算值选项值是产品的数量而不更改其 0 如果我们更改值是更改

<?php 
    print_r ($_POST);
    $name=$_POST['name'];
    $price=$_POST['price'];
?>

<div class="myaccount1_2">
    <div class="deal_text"><?php echo $name;  ?>.</div>
    <div class="mypurchase_1">
        <select class="select_new" name="val">
            <option value="0">0</option>
            <option value="1">1</option>
            <option value="2">2</option>
            <option value="3">3</option>
        </select>
    </div>
    <div class="mypurchase_1">£<?php echo $price; ?></div>
    <div class="price"><b>£00.00 </b></div>
</div>

我希望在选择显示00.00之后选择计算值显示

Answer 1

使用以下jQUery代码：

$(document).ready(function(){
  $("select[name=val]").change(function(){
     var qnt = $(this).val();
     var price = "<?php echo $price;?>";
     var total = qnt*price;
     $(".price").val('<b>£'+total+'</b>');
     alert(qnt*price);
  });
});

Answer 2

使用此功能..

<script>
function calculate(value,price)
{
var div = document.getElementById('div_id');
div.innerHTML=value*price;
}
</script>
<select class="select_new" name="val" **onchange="calculate(this.value,'$price')"**)>
            <option value="0">0</option>
            <option value="1">1</option>
            <option value="2">2</option>
            <option value="3">3</option>
        </select>

onchange增加值使用javascript

2 个答案: