如何在下一个表格单元格中使用Tab键设置对输入的焦点

问题描述 投票:0回答:1

以下是我正在HTML中使用JQuery实现的方案

  • [当用户双击表格单元格时,应在其中输入新的双击单元格[完成]
  • 当用户按键[Tab]时,它应移至下一个单元格[完成]

[在2种情况下,我需要在下一个单元格中触发dblclick()事件,该事件将在其中创建输入元素,但它无法在输入元素内部进行聚焦。

我已经尝试调试这种情况,无法理解为什么发生这种情况。

我创建了一个按钮并编写了触发dblclick()的点击功能,然后在输入元素内设置了焦点。

我无法理解用户何时使用鼠标单击/ click(),然后为什么将焦点设置在创建的输入元素上,但是当我从使用dblclick()的代码中触发双击时为什么没有发生同样的事情?>

以下是相同的代码:


//Global Variables
var TabEdit_sourceInput = null;
var TabEdit_currentTd = null;
var TabEdit_DOMtocheck = null;
var TabEdit_previousHour = null;
var gridRefreshFlag = false;

//Init Double Click Event on the Table TD
$('.custom-table-td').dblclick(function(event){
    var tableId = $(this).attr('id');
    var inputId = 'input-'+tableId;
    $(this).html('<input id="input-'+tableId+'" placeholder="Type Message" class="form-control" onkeydown="return initCheckKeypress();" tabindex="1"/>');
    
    //Focusing on Generated Event
    $('#'+inputId).focus();

    //Binding the Focus Out Event to
    $('#'+inputId).focusout(function(){
        debugger;
        $('.header').html($(this).val());
     });
     
});

//Click Event to trigger dblclick on td with id = 'tableData1'
$('.btn-trigger-dbclick').click(function(){
    $('#tableData1').dblclick();
});

//Function to check Tab is Press or not
function initCheckKeypress(evt) {
    "use strict";
    var e = event || evt; // for trans-browser compatibility
    var charCode = e.which || e.keyCode;
    if (charCode === 9) {
        gridRefreshFlag = true;
        TabEdit_sourceInput = $(e.target);
        TabEdit_currentTd = TabEdit_sourceInput.parent();
        TabEdit_DOMtocheck = TabEdit_currentTd.next('td');
        movetoNextTD();
    }
}


//Code to Click on Next Cell
function movetoNextTD() {
    if (gridRefreshFlag && TabEdit_DOMtocheck !== null) {
        TabEdit_currentTd.html("");
        TabEdit_DOMtocheck.dblclick();
        resetmovetoNextVariable();
    }
}

//Reset Global Variable
function resetmovetoNextVariable(){
    TabEdit_sourceInput = null;
    TabEdit_currentTd = null;
    TabEdit_DOMtocheck = null;
    TabEdit_previousHour = null;
    gridRefreshFlag = false;
}
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Focus Issue</title>
    <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/css/bootstrap.min.css" >
</head>
<body>
    <div class="container">
        <div class="row">
            <div class="col-lg-6">
                <div class="header"></div>
                <table class="table table-bordered">
                    <tbody>
                        <tr id="tableRow1">
                            <th id="tableHeader1" class="custom-table-th">TH 1</th>
                            <th id="tableHeader2" class="custom-table-th">TH 2</th>
                            <th id="tableHeader3" class="custom-table-th">TH 3</th>
                        </tr>
                        <tr id="tableRow2">
                            <td id="tableData1" class="custom-table-td"></td>
                            <td id="tableData2" class="custom-table-td"></td>
                            <td id="tableData3" class="custom-table-td"></td>
                        </tr>
                    </tbody>
                </table>
                <button class="btn btn-primary btn-trigger-dbclick">Trigger</button>
            </div>
        </div>
    </div>
    <script src="https://code.jquery.com/jquery-3.4.1.slim.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/umd/popper.min.js"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/js/bootstrap.min.js"></script>
</body>
</html>

以下是我在HTML中使用JQuery实现的方案,当用户双击表单元格时,它应该在双击单元格内进行新输入[完成],当用户使用KeyPress [Tab]并对其进行......]

javascript jquery focus event-bubbling event-capturing
1个回答
0
投票
仅当您的JavaScript完成后,才在浏览器中更新DOM(在浏览器中呈现)。这样,当您调用$("#"+inputId).focus()尚不存在(在浏览器中,它在DOM中存在),因此需要等待其呈现。最简单的方法是:

setTimeout(function() { $('#'+inputId).focus(); }, 10);

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