这个问题是一个典型的
我正在Wordpress4.0网站上工作，想在主页上添加一个自定义计算器。帮助客户计算他们的储蓄。主页的URL为https://northerncrushing.co.uk。我在一个普通的HTML页面中测试了相同的代码，它运行得很好。但当我在wordpress页面中使用时，它就停止工作了。我正在使用AlternaTheme与WooCommerce和CodeCanyon的BookingSystemPro之前的主题。这个区块在我主页的右下角页脚上方。HTML是
<div><form>
<table>
<tbody>
<tr>
<td>Crusher Hire Rate :</td>
<td>£ <input id="hireRate" disabled="disabled" name="hireRate" type="number" value="160" /></td>
</tr>
<tr>
<td>Tons Crushed per Job :</td>
<td> <input id="tonesCrushed" name="tonesCrushed" type="number" value="16" /></td>
</tr>
<tr>
<td>No. of skips SAVED :</td>
<td> <input id="skipsSaved" disabled="disabled" name="skipsSaved" type="number" value="2" /></td>
</tr>
<tr>
<td>Skip Rate :</td>
<td>£ <input id="skipRate" name="skipRate" type="number" value="145" /></td>
</tr>
<tr>
<td>Skip Saving :</td>
<td>£ <input id="skipSaving" disabled="disabled" name="skipSaving" type="number" value="290" /></td>
</tr>
<tr>
<td>Aggregate cost per tonne :</td>
<td>£ <input id="aggregateCost" name="aggregateCost" type="number" value="10" /></td>
</tr>
<tr>
<td>Aggregate SAVED :</td>
<td>£ <input id="aggregateSaving" disabled="disabled" name="aggregateSaving" type="number" value="160" /></td>
</tr>
<tr>
<td></td>
</tr>
</tbody>
</table>
</form></div>
<hr />
<strong>Total SAVING : </strong>£ <input id="totalSaving" disabled="disabled" name="totalSaving" type="number" value="290" />
<a href="javascript:calculateSavings4000();">Calculate</a>
现在脚本是：
<script>
function calculateSavings4000(){
var hr = document.getElementById("hireRate4000").value;
var ton = document.getElementById("tonesCrushed4000").value;
var skiprate = document.getElementById("skipRate4000").value;
var act = document.getElementById("aggregateCost4000").value;
var noskips = Math.ceil(ton/8);
var skipsaving = noskips * skiprate;
var agrsaved = act * ton;
var saving = ((agrsaved + skipsaving) - hr);
var noskip_val = document.getElementById("skipsSaved4000");
noskip_val.value = noskips;
var skipsaving_val = document.getElementById("skipSaving4000");
skipsaving_val.value = skipsaving;
var agrsaved_val = document.getElementById("aggregateSaving4000");
agrsaved_val.value = agrsaved;
var total = document.getElementById("totalSaving4000");
total.value = saving;
}
</script>
已经花了很多小时没有任何运气。我们非常感谢所有的帮助。
问题是您的ID选择器设置不正确，例如：
var hr = document.getElementById("hireRate4000").value;
具有该ID的元素不存在，我想你想要的是：
var hr = document.getElementById("hireRate").value;
与其他选择器相同：
var ton = document.getElementById("tonesCrushed").value;
var skiprate = document.getElementById("skipRate").value;
var act = document.getElementById("aggregateCost").value;
var noskip_val = document.getElementById("skipsSaved");
var skipsaving_val = document.getElementById("skipSaving");
var agrsaved_val = document.getElementById("aggregateSaving");
var total = document.getElementById("totalSaving");