更新#2:更新了脚本。
a)用户选择一个按钮。点击最后一个按钮的值+ .current__amount
= new__amount
b)没有总计。再次点击同一按钮应该取消选中它,然后从.new__amount
中减去该值,然后使用.html()
更改占位符文字
是的,现在无论出于何种原因,点按按钮都不会在.new__amount
中添加或删除其值。
我console.log(buttons[i].value)
和console.log(buttons[i].class)
并且可以看到for循环正在打印类和这六个按钮的值,这些按钮表示无声拍卖中的出价{{1}并且已经存储在名为$10, 25, 50
的数组中,就像我想要的那样。
几乎就在那里。只需要做到这一点,一次只能选择一个按钮。
var buttons = []
答案 0 :(得分:1)
这不是特定于您的问题结构,但它应该让您了解它是如何工作的。
$(document).ready(function() {
var totalAmount = 0;
$('.button__form').on('click', function() {
var value = $(this).val();
if($(this).hasClass('selected')) {
$(this).removeClass('selected');
totalAmount = parseInt(totalAmount) - parseInt(value);
}
else {
$(this).addClass('selected');
totalAmount = parseInt(totalAmount) + parseInt(value);
}
$('.total').html(totalAmount);
});
});
.selected {
color: red;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<button class="button__form" value=10>10</button>
<button class="button__form" value=25>25</button>
<button class="button__form" value=50>50</button>
<button class="button__form" value=100>100</button>
<button class="button__form" value=250>250</button>
<button class="button__form" value=500>500</button>
<br/><br/>
<div class="total"><div>
编辑,一次只能选择一个按钮:
$(document).ready(function() {
var baseAmount = 0;
var totalAmount = baseAmount;
$('.button__form').on('click', function() {
var value = $(this).val();
if($(this).hasClass('selected')) {
$(this).removeClass('selected');
totalAmount = parseInt(totalAmount) - parseInt(value);
}
else {
$('.button__form').removeClass('selected'); // remove selected css from all the other buttons
$(this).addClass('selected');
totalAmount = baseAmount; // reset the totalAmount to the original base amount
totalAmount = parseInt(totalAmount) + parseInt(value);
}
$('.total').html(totalAmount);
});
});
.selected {
color: red;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<button class="button__form" value=10>10</button>
<button class="button__form" value=25>25</button>
<button class="button__form" value=50>50</button>
<button class="button__form" value=100>100</button>
<button class="button__form" value=250>250</button>
<button class="button__form" value=500>500</button>
<br/><br/>
<div class="total"><div>