Question

我是JS的新手。在这种情况下，我想在单击+按钮后在新行中添加输入书和价格。所以当我单击-按钮时，输入将被删除。对不起，我的英语不好。

<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.5.0/css/bootstrap.min.css" integrity="sha384-9aIt2nRpC12Uk9gS9baDl411NQApFmC26EwAOH8WgZl5MYYxFfc+NcPb1dKGj7Sk" crossorigin="anonymous">
    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css" />
    <script src="https://kit.fontawesome.com/a81368914c.js"></script>
    
    <div class="container">
        <div class="row">
            <div class="col-md-4">
                <div class="form-group">
                    <label>Book</label>
                    <input type="text" class="form-control">
                </div>
            </div>
            <div class="col-md-4">
                <div class="form-group">
                    <label>Price</label>
                    <input type="text" class="form-control">
                </div>
            </div>
            <div class="col-md-4" style="align-items: center; display: flex">
                <button style="margin-right: 10px;"><i class="fas fa-plus"></i></button>
                <button><i class="fas fa-minus"></i></button>
            </div>
        </div>
    </div>
    
    <script src="https://code.jquery.com/jquery-3.5.1.slim.min.js" integrity="sha384-DfXdz2htPH0lsSSs5nCTpuj/zy4C+OGpamoFVy38MVBnE+IbbVYUew+OrCXaRkfj" crossorigin="anonymous"></script>

Answer 1

 <div class="container" id="main-element">
        <div class="row row-to-clone"">
            <div class="col-md-4">
                <div class="form-group">
                    <label>Book</label>
                    <input type="text" class="form-control">
                </div>
            </div>
            <div class="col-md-4">
                <div class="form-group">
                    <label>Price</label>
                    <input type="text" class="form-control">
                </div>
            </div>
            <div class="col-md-4" style="align-items: center; display: flex">
                <button style="margin-right: 10px;"><i class="fas fa-plus"></i></button>
                <button><i class="fas fa-minus"></i></button>
            </div>
        </div>
    </div>
    <buttons id="addRow">Add</button>

jQuery代码

<script>    
    $(document).ready(function(){
        $('#addRow').click(function(){
          // clone the row  
           const clonedRow = $('.row-to-clone').html()  
          // append to the container
           $('#main-element').append(`<div class="row">${ clonedRow }</div>`);                  
        })
    })
</script>

单击按钮时添加或删除元素

1 个答案: