jQuery点击按钮，生成input输入框

王小婷

发布于 2019-04-17 06:21:56

6.9K00

代码可运行

文章被收录于专栏：编程微刊编程微刊

运行总次数：0

代码可运行

需求，点击添加按钮，生成input输入框，如果上一个输入框为空，则弹出提示框提示，若不为空，则生成一行input框。

<!DOCTYPE html>
<html>

    <head>
        <meta charset="utf-8">
        <title></title>
        <link rel="stylesheet" href="https://cdn.staticfile.org/twitter-bootstrap/3.3.7/css/bootstrap.min.css">
        <script src="https://cdn.staticfile.org/jquery/2.1.1/jquery.min.js"></script>
        <script src="https://cdn.staticfile.org/twitter-bootstrap/3.3.7/js/bootstrap.min.js"></script>
    </head>

    <body>
        <div class="row">
            
                <div class="form-group">
                    <label class="col-md-1 col-sm-1  col-xs-1 control-label">设备编号:</label>
                    <div class="col-md-4 col-sm-4 col-xs-4">
                        <input type="text" class="form-control number" placeholder="请输入编号" id="">
                    </div>
                </div>
            
        </div>
        <div id="opts"></div>
        <div class="row">
            <div class="col-md-12 col-sm-12  col-xs-12">
                <div class="form-group">
                    
                    <button id="fat-btn" class="btn btn-primary" 
    type="button">添加
</button>

                </div>
            </div>
        </div>
    </body>
    <script>
        $(function() {
            
            $("#fat-btn").click(function() {
                if($(".number:last").val() == "") {
                    alert(1)
                } else {
                    var htm = "";
                    htm += "    <div class='row'>";             
                    htm += "    <div class='form-group'>";
                    htm += "    <label class='col-md-1 col-sm-1  col-xs-1 control-label'>设备编号:</label>";
                    htm += "    <div class='col-md-4 col-sm-4  col-xs-4'>";
                    htm += "    <input type='text' class='form-control number' placeholder='请输入编号' id=''>";
                    htm += "    </div></div>";
                    htm += "</div>";

                    $('#opts').append(htm);
                }
            });

        });
    </script>