我正在尝试编写这个资金管理系统,但它无法正常工作。钱印在右上角,但是当我单击按钮更改值时,它不起作用。
HTML:
<div id="content">
<div id="money_count">$$MONEY$$</div>
<br>
<div id="items">
<table>
<tr>
<td><a href="#">$12.19</a>
</td>
<td><a href="#">$15.00</a>
</td>
</tr>
<tr>
<td><a href="#">$24.99</a>
</td>
<td><a href="#">$35.50</a>
</td>
</tr>
</table>
</div>
</div>
CSS:
#content {
font-family:Helvetica;
width:500px;
box-shadow:0px 0px 10px 0px #AAA;
top:30px;
margin:0px auto;
margin-top:40px;
padding:10px 20px;
border:dashed 2px #888;
}
#money_count {
color:#0F0;
padding:5px;
text-shadow:0px 0px 1px #333;
margin-right:0;
margin-left:auto;
margin-top:6px;
width:100px;
text-align:center;
}
table, th td {
border:ridge 3px #AAA;
box-shadow:0px 0px 6px 0px #AAA;
}
table {
width:400px;
margin-left:50px;
margin-top:20px;
margin-bottom:50px;
}
td {
padding:4px;
background-color:#CCC;
text-align:center;
}
a, td {
color:black;
text-decoration:none;
width:auto;
height:100px;
}
Javascript:
var money = 500.27 - 0.27;
var moneyElement = document.getElementById("money_count");
moneyElement.innerHTML = money;
function updateMoney() {
moneyElement.innerHTML = money;
}
function subtractMoney(amount) {
money -= amount;
updateMoney();
}
关于为什么这不会更新右上角的货币价值的任何想法?