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如何使用模态和 Jquery 将文件上传到表？

我有一个动态表，允许人们在单击按钮时在模式中上传图像、他们的名字和姓氏。当我尝试上传图像时，我的表格在图像的位置显示“未定义”。如何让表格显示图像？


我尝试过使用 .val()、.attr('src')。我是 jquery 新手，所以我确信我在这里犯了一个菜鸟错误，但我没有想法，似乎在任何地方都找不到类似的问题。


$(document).ready(function () {

    $("#save_btn").click(function () {

        let image = $("#Image").attr('');

        let name = $("#Name").val();

        let surname = $("#Surname").val();

        $('#myTable').append(

            '<tr>' +

            '<td>' + image + '</td>' +

            '<td>' + name + '</td>' +

            '<td>' + surname + '</td>' +

            '<td> <button id="edit" class="btn btn-sm material-icons" style="color: green"> create </button> </td>' +

            '<td><button id="delete" class="btn btn-sm material-icons" style="color: red">delete</button></td>' +

            '</tr>'

        );

    });

    

    });

我对附加功能进行了更改。我添加了这个...


"<td>" + "<img id='table_image' alt='' src='" + './images/' + image + "' > " + "</td>" +


UYOU
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2回答

慕后森

$(document).ready(function () {&nbsp; &nbsp; &nbsp;$('input[type="file"]').change(function(e){&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;fileName=URL.createObjectURL(e.target.files[0]);&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; });&nbsp; &nbsp; &nbsp; &nbsp; $("#save_btn").click(function () {&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; //let image = $("#Image").attr('src',fileName);&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; let name = $("#Name").val();&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; let surname = $("#Surname").val();&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; $('#myTable').append(&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; '<tr>' +&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; '<td><img src="' + fileName + '" width="150" height="150"></td>' +&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; '<td>' + name + '</td>' +&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; '<td>' + surname + '</td>' +&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; '<td> <button id="edit" class="btn btn-sm material-icons" style="color: green"> create </button> </td>' +&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; '<td><button id="delete" class="btn btn-sm material-icons" style="color: red">delete</button></td>' +&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; '</tr>'&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; );&nbsp; &nbsp; &nbsp; &nbsp; });&nbsp; &nbsp; &nbsp; &nbsp;&nbsp;&nbsp; &nbsp; &nbsp; &nbsp; });&nbsp;<!doctype html>&nbsp; &nbsp; <html>&nbsp; &nbsp; <head>&nbsp; &nbsp; &nbsp; &nbsp; <!-- Required meta tags -->&nbsp; &nbsp; &nbsp; &nbsp; <meta charset="utf-8">&nbsp; &nbsp; &nbsp; &nbsp; <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">&nbsp; &nbsp; &nbsp; &nbsp; <link href="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-Vkoo8x4CGsO3+Hhxv8T/Q5PaXtkKtu6ug5TOeNV6gBiFeWPGFN9MuhOf23Q9Ifjh" crossorigin="anonymous">&nbsp; &nbsp; &nbsp; &nbsp; <link rel="stylesheet" href="https://fonts.googleapis.com/icon?family=Material+Icons">&nbsp; &nbsp; &nbsp; &nbsp; <title>Homework 2</title>&nbsp; &nbsp; </head>&nbsp; &nbsp; <body>&nbsp; &nbsp; <div class="container">&nbsp; &nbsp; &nbsp; &nbsp; <div class="row">&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <div class="col">&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <button type="button" class="btn btn-primary btn-lg btn-block" data-toggle="modal" data-target="#myModal">Add to Table</button>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; </div>&nbsp; &nbsp; &nbsp; &nbsp; </div>&nbsp; &nbsp; &nbsp; &nbsp; <table id="myTable" class="table table-dark">&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <thead>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <tr>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <th scope="col">Image</th>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <th scope="col">Name</th>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <th scope="col">Surname</th>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <th scope="col">Edit</th>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <th scope="col">Delete</th>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; </tr>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; </thead>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <tbody>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; </tbody>&nbsp; &nbsp; &nbsp; &nbsp; </table>&nbsp; &nbsp; </div>&nbsp; &nbsp; <!-- The Modal -->&nbsp; &nbsp; <div class="modal fade" id="myModal" tabindex="-1" role="dialog" aria-labelledby="exampleModalLabel" aria-hidden="true">&nbsp; &nbsp; &nbsp; &nbsp; <div class="modal-dialog" role="document">&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <div class="modal-content">&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <div class="modal-header">&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <h5 class="modal-title" id="exampleModalLabel">Add Data to Table</h5>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <button type="button" class="close" data-dismiss="modal" aria-label="Close">&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span aria-hidden="true">&times;</span>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; </button>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; </div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <div class="modal-body">&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <form>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <div class="form-group">&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <label id="Image_input" for="Image" class="col-form-label">Image:</label>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <input type="file" class="form-control" id="Image">&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; </div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <div class="form-group">&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <label id="name_input" for="Name" class="col-form-label">Name:</label>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <input type="text" class="form-control" id="Name">&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; </div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <div class="form-group">&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <label id="surname_input" for="Surname" class="col-form-label">Surname:</label>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <input type="text" class="form-control" id="Surname">&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; </div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; </form>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; </div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <div class="modal-footer">&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <button type="button" class="btn btn-secondary" data-dismiss="modal">Close</button>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <button id="save_btn" type="button" class="btn btn-primary" data-dismiss="modal">Save</button>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; </div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; </div>&nbsp; &nbsp; &nbsp; &nbsp; </div>&nbsp; &nbsp; </div>&nbsp; &nbsp; <!-- Optional JavaScript -->&nbsp; &nbsp; <!-- jQuery first, then Popper.js, then Bootstrap JS -->&nbsp; &nbsp; <script src="https://code.jquery.com/jquery-3.4.1.slim.min.js" integrity="sha384-J6qa4849blE2+poT4WnyKhv5vZF5SrPo0iEjwBvKU7imGFAV0wwj1yYfoRSJoZ+n" crossorigin="anonymous"></script>&nbsp; &nbsp; <script src="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/js/bootstrap.min.js" integrity="sha384-wfSDF2E50Y2D1uUdj0O3uMBJnjuUD4Ih7YwaYd1iqfktj0Uod8GCExl3Og8ifwB6" crossorigin="anonymous"></script>&nbsp; &nbsp; <script src="js/index.js"></script>&nbsp; &nbsp; </body>&nbsp; &nbsp; </html>
0

白猪掌柜的

您正在分配空白 attr 值。请参阅下面的更新代码。$(document).ready(function() {&nbsp; $("#save_btn").click(function() {&nbsp; &nbsp;&nbsp; &nbsp; var fileNameIndex = $("#Image").val().lastIndexOf("\\") + 1;&nbsp; &nbsp; var image = $("#Image").val().substr(fileNameIndex);&nbsp; &nbsp;&nbsp;&nbsp; &nbsp; let name = $("#Name").val();&nbsp; &nbsp; let surname = $("#Surname").val();&nbsp; &nbsp; $('#myTable').append(&nbsp; &nbsp; &nbsp; '<tr>' +&nbsp; &nbsp; &nbsp; '<td>' + image + '</td>' +&nbsp; &nbsp; &nbsp; '<td>' + name + '</td>' +&nbsp; &nbsp; &nbsp; '<td>' + surname + '</td>' +&nbsp; &nbsp; &nbsp; '<td> <button id="edit" class="btn btn-sm material-icons" style="color: green"> create </button> </td>' +&nbsp; &nbsp; &nbsp; '<td><button id="delete" class="btn btn-sm material-icons" style="color: red">delete</button></td>' +&nbsp; &nbsp; &nbsp; '</tr>'&nbsp; &nbsp; );&nbsp; });});<!doctype html><html><head>&nbsp; <!-- Required meta tags -->&nbsp; <meta charset="utf-8">&nbsp; <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">&nbsp; <link href="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-Vkoo8x4CGsO3+Hhxv8T/Q5PaXtkKtu6ug5TOeNV6gBiFeWPGFN9MuhOf23Q9Ifjh" crossorigin="anonymous">&nbsp; <link rel="stylesheet" href="https://fonts.googleapis.com/icon?family=Material+Icons">&nbsp; <title>Homework 2</title></head><body>&nbsp; <div class="container">&nbsp; &nbsp; <div class="row">&nbsp; &nbsp; &nbsp; <div class="col">&nbsp; &nbsp; &nbsp; &nbsp; <button type="button" class="btn btn-primary btn-lg btn-block" data-toggle="modal" data-target="#myModal">Add to Table</button>&nbsp; &nbsp; &nbsp; </div>&nbsp; &nbsp; </div>&nbsp; &nbsp; <table id="myTable" class="table table-dark">&nbsp; &nbsp; &nbsp; <thead>&nbsp; &nbsp; &nbsp; &nbsp; <tr>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <th scope="col">Image</th>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <th scope="col">Name</th>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <th scope="col">Surname</th>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <th scope="col">Edit</th>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <th scope="col">Delete</th>&nbsp; &nbsp; &nbsp; &nbsp; </tr>&nbsp; &nbsp; &nbsp; </thead>&nbsp; &nbsp; &nbsp; <tbody>&nbsp; &nbsp; &nbsp; </tbody>&nbsp; &nbsp; </table>&nbsp; </div>&nbsp; <!-- The Modal -->&nbsp; <div class="modal fade" id="myModal" tabindex="-1" role="dialog" aria-labelledby="exampleModalLabel" aria-hidden="true">&nbsp; &nbsp; <div class="modal-dialog" role="document">&nbsp; &nbsp; &nbsp; <div class="modal-content">&nbsp; &nbsp; &nbsp; &nbsp; <div class="modal-header">&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <h5 class="modal-title" id="exampleModalLabel">Add Data to Table</h5>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <button type="button" class="close" data-dismiss="modal" aria-label="Close">&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span aria-hidden="true">&times;</span>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; </button>&nbsp; &nbsp; &nbsp; &nbsp; </div>&nbsp; &nbsp; &nbsp; &nbsp; <div class="modal-body">&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <form>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <div class="form-group">&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <label id="Image_input" for="Image" class="col-form-label">Image:</label>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <input type="file" class="form-control" id="Image">&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; </div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <div class="form-group">&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <label id="name_input" for="Name" class="col-form-label">Name:</label>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <input type="text" class="form-control" id="Name">&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; </div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <div class="form-group">&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <label id="surname_input" for="Surname" class="col-form-label">Surname:</label>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <input type="text" class="form-control" id="Surname">&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; </div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; </form>&nbsp; &nbsp; &nbsp; &nbsp; </div>&nbsp; &nbsp; &nbsp; &nbsp; <div class="modal-footer">&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <button type="button" class="btn btn-secondary" data-dismiss="modal">Close</button>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <button id="save_btn" type="button" class="btn btn-primary" data-dismiss="modal">Save</button>&nbsp; &nbsp; &nbsp; &nbsp; </div>&nbsp; &nbsp; &nbsp; </div>&nbsp; &nbsp; </div>&nbsp; </div>&nbsp; <!-- Optional JavaScript -->&nbsp; <!-- jQuery first, then Popper.js, then Bootstrap JS -->&nbsp; <script src="https://code.jquery.com/jquery-3.4.1.slim.min.js" integrity="sha384-J6qa4849blE2+poT4WnyKhv5vZF5SrPo0iEjwBvKU7imGFAV0wwj1yYfoRSJoZ+n" crossorigin="anonymous"></script>&nbsp; <script src="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/js/bootstrap.min.js" integrity="sha384-wfSDF2E50Y2D1uUdj0O3uMBJnjuUD4Ih7YwaYd1iqfktj0Uod8GCExl3Og8ifwB6" crossorigin="anonymous"></script>&nbsp; <script src="js/index.js"></script></body></html>
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