我已经写了一些JavaScript脚本以:
打算向产品价格(字段名称“ productprice”)添加 5,并更新总计(字段名称“总计” ')。
我在检查控制台时看到了正确的值,
link to video : console values returned
但总字段未填充|未更新任何值。
我的代码有什么问题?将不胜感激一些专业知识。谢谢。
表格:
<form id='form' name='form'>
<label class='control-label col-sm-2'>Inscription</label>
<div class='col-sm-10'>
<textarea name='desserttextmessage' id='desserttextmessage' class='form-control' rows='5'></textarea>
<div class='text-danger'></div>
<p class='help-block'></p>
</div>
<label class='control-label col-sm-2'>Décoration petites fleurs</label>
<div class='col-sm-10'>
<select class='form-control' id='dessertdecorflowerID' data-value='undefined' name='dessertdecorflowerID'>
<option value=''>** Veuillez saisir une option Décoration petites fleurs</option>
<option value='1'>Non</option>
<option value='2'>Oui</option>
</select>
<div class='text-danger'></div>
<p class='help-block'></p>
</div>
<label class='control-label col-sm-2'>Décoration Chocolat et fruits</label>
<div class='col-sm-10'>
<select class='form-control' id='dessertdecorchocolateID' data-value='undefined' name='dessertdecorchocolateID'>
<option value=''>** Veuillez saisir une option Décoration Chocolat et fruits</option>
<option value='1'>Non</option>
<option value='2'>Oui</option>
</select>
<div class='text-danger'></div>
<p class='help-block'></p>
</div>
<label class='control-label col-sm-2'>Prix</label>
<div class='col-sm-10'>
<input type='number' step='1' title='Prix' class='form-control' name='productprice' id='productprice' value='56'>
<div class='text-danger'></div>
<p class='help-block'></p>
</div>
<label class='control-label col-sm-2'>Total</label>
<div class='col-sm-10'>
<input type='number' step='1' title='Total' class='form-control' name='total' id='total' value='0'>
<div class='text-danger'></div>
<p class='help-block'></p>
</div>
脚本:
function onchangeDessertTextMessage() {
var textmessage = document.getElementById('desserttextmessage');
if(textmessage.value == '')
{
// alert('false');
return false;
}
else
// alert('true');
return true;
};
function updateTotal() {
var textmessage = onchangeDessertTextMessage();
var selectordecorflower = document.getElementById('dessertdecorflowerID');
var valuedecorflower = selectordecorflower[selectordecorflower.selectedIndex].value;
// console.log(valuedecorflower);
var selectordecorchocolate = document.getElementById('dessertdecorchocolateID');
var valuedecorchocolate = selectordecorchocolate[selectordecorchocolate.selectedIndex].value;
// console.log(valuedecorchocolate);
var productprice = document.getElementById('productprice').value;
var surcharge = 5;
var total = parseInt(productprice);
var totalsurcharge = parseInt(productprice) + parseInt(surcharge);
// console.log(textmessage);
// console.log(textmessage);
// console.log(valuedecorflower);
// console.log(valuedecorchocolate);
if (textmessage === true || valuedecorflower > 1 || valuedecorchocolate > 1)
{
console.log(totalsurcharge);
}
else if (textmessage !== true || valuedecorflower < 2 || valuedecorchocolate < 2)
{
console.log(productprice);
}
};
window.onchange = onchangeDessertTextMessage;
window.onchange = updateTotal;
答案 0 :(得分:1)
您正在尝试使用innerHTML更新输入字段“总计”-在文本输入中不起作用-您需要使用值。
例如document.getElementById('total').value = productprice;