Javascript / Jquery - 多个更改（函数（）
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Javascript / Jquery - Multiple on Change (function()
提问by Brandrally
I am kinda new to Jquery / JS and after a little help. I realise there hopefully is a much better way to do this, and any help would be greatly appreciated.
我对 Jquery / JS 有点陌生，在得到了一些帮助之后。我意识到希望有更好的方法来做到这一点，任何帮助将不胜感激。
I am building a form that can calculate a total. That is:
我正在构建一个可以计算总数的表单。那是：
'Cost' x '(1 + percent(%))' = 'total cost'
'成本' x '(1 + 百分比(%))' = '总成本'
I have it working nicely, though I want to make it so that if I change either the 'percent' field, or the 'cost' field then the total amountupdates. At the moment only if you update the 'cost' will the total update.
我让它工作得很好，但我想这样做，如果我更改“百分比”字段或“成本”字段，则总金额会更新。目前只有当你更新'成本'时，总更新。
Hope that makes sense. Code is below.
希望这是有道理的。代码如下。
$(document).ready(function(){
$("#cost").change(function() {
var findprofit = parseFloat($("#cost").val());
var profit = (findprofit*.01)
var margin = parseFloat($("#percentage").val());
var total = profit*margin;
$(".profit_1_1").html(total);
var totalprofit = (total + findprofit);
$("#total").val(totalprofit);
});
<input type="text" name="cost" id="cost" />
<input type="text" name="percentage" id="cost" percentage />
<input type="text" name="total" id="total" readonly />
回答by James Donnelly
$("#cost, #percent").change(function() {
...
});
Should do the trick.
应该做的伎俩。
Edit: You'll need to give your percent input an id of "percent". Two elements may not have the same ID.
编辑：你需要给你的百分比输入一个“百分比”的id。两个元素可能不具有相同的 ID。
<input type="text" name="cost" id="cost" />
<input type="text" name="percentage" id="percent" percentage />
<input type="text" name="total" id="total" readonly />
Also I'm not sure what that "percentage" is at the end of the input. Percentage isn't a valid attribute.
另外，我不确定输入末尾的“百分比”是多少。百分比不是有效的属性。
