正如你们所看到的,我有两列:名称和门票。
所以约翰有 15 张票,鲍勃有 10 张,依此类推...
目标:我想做某种“彩票”,每个人都有 X 张票。门票越多,赢得奖品的机会就越大。
我试图将两个列按其类分开,然后创建某种“主数组/对象”,如下所示:
lottery = {
John => 15
Bob => 10
Milla => 7
}
然后我会尝试随机挑选一个获胜者......只是不知道该怎么做。
在这里我得到了输入,但我不知道如何“连接”它们。
$('#sort').click(function(){
let names = $('.names');
let tickets = $('tickets');
let size = Object.keys(names).length;
}
HTML 结构:
<section id="content">
<div class="container participant">
<div class="row">
<div class="input-group">
<div class="input-group-prepend">
<span class="input-group-text">Nome & Tickets</span>
</div>
<input type="text" aria-label="name" class="names form-control">
<input type="text" aria-label="tickets" class="tickets form-control">
<div class="input-group-append">
<button class="addUser btn btn-outline-secondary" type="button">
<i class="fas fa-user-plus" data-toggle="tooltip" data-placement="top" title="" data-original-title="Add participante"></i>
</button>
</div>
</div>
</div>
</div>
</section>
最佳答案
考虑到每个用户都有多张票,以便有更多的获胜机会,因此创建一个包含其姓名的多个实例的数组更有意义,然后您可以在其中随机选择。
要构建数组,您可以使用 map()
,然后使用 fill()
在 randomly selecting 之前使用名称填充它。从它,像这样:
var arr = $('#content .container .row').map(function() {
var $row = $(this);
return new Array(parseInt($row.find('.tickets').val(), 10)).fill($row.find('.names').val());
}).get();
var winner = arr[Math.floor(Math.random() * arr.length)];
console.log('Winner: ', winner);
console.log(arr);
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<section id="content">
<div class="container participant">
<div class="row">
<div class="input-group">
<div class="input-group-prepend">
<span class="input-group-text">Nome & Tickets</span>
</div>
<input type="text" aria-label="name" class="names form-control" value="John">
<input type="text" aria-label="tickets" class="tickets form-control" value="15">
<div class="input-group-append">
<button class="addUser btn btn-outline-secondary" type="button">
<i class="fas fa-user-plus" data-toggle="tooltip" data-placement="top" title="" data-original-title="Add participante"></i>
</button>
</div>
</div>
</div>
<div class="row">
<div class="input-group">
<div class="input-group-prepend">
<span class="input-group-text">Nome & Tickets</span>
</div>
<input type="text" aria-label="name" class="names form-control" value="Bob">
<input type="text" aria-label="tickets" class="tickets form-control" value="10">
<div class="input-group-append">
<button class="addUser btn btn-outline-secondary" type="button">
<i class="fas fa-user-plus" data-toggle="tooltip" data-placement="top" title="" data-original-title="Add participante"></i>
</button>
</div>
</div>
</div>
<div class="row">
<div class="input-group">
<div class="input-group-prepend">
<span class="input-group-text">Nome & Tickets</span>
</div>
<input type="text" aria-label="name" class="names form-control" value="Milla">
<input type="text" aria-label="tickets" class="tickets form-control" value="7">
<div class="input-group-append">
<button class="addUser btn btn-outline-secondary" type="button">
<i class="fas fa-user-plus" data-toggle="tooltip" data-placement="top" title="" data-original-title="Add participante"></i>
</button>
</div>
</div>
</div>
<div class="row">
<div class="input-group">
<div class="input-group-prepend">
<span class="input-group-text">Nome & Tickets</span>
</div>
<input type="text" aria-label="name" class="names form-control" value="Kurt">
<input type="text" aria-label="tickets" class="tickets form-control" value="3">
<div class="input-group-append">
<button class="addUser btn btn-outline-secondary" type="button">
<i class="fas fa-user-plus" data-toggle="tooltip" data-placement="top" title="" data-original-title="Add participante"></i>
</button>
</div>
</div>
</div>
</div>
</section>
关于javascript - 如何迭代输入的内容,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/54890591/