How to modify table content with jquery

In front-end development, tables are a commonly used way to display data. However, when we need to modify the table content, we often need to manually modify it one by one, which is very troublesome and inefficient. Therefore, using jQuery to modify the table content is a very good solution.

What is jQuery?

Before talking about jQuery modifying table content, let’s first understand jQuery. jQuery is an excellent JavaScript library that encapsulates many methods to simplify the manipulation of documents, handle events, create animations, handle AJAX and other powerful functions. Using jQuery allows us to operate documents more conveniently and improve development efficiency.

Operation to modify table content

Now, let’s take a look at how to use jQuery to modify table content.

First, we need to create a table in the HTML page and add some content to it, such as:

<table id="myTable">
   <tr>
     <th>姓名</th>
     <th>年龄</th>
     <th>性别</th>
   </tr>
   <tr>
     <td>小明</td>
     <td>20</td>
     <td>男</td>
   </tr>
   <tr>
     <td>小红</td>
     <td>18</td>
     <td>女</td>
   </tr>
</table>

Next, we need to write jQuery code to modify the table content. The following code is an example we can use:

$(document).ready(function() {
    //获取表格中的单元格
    var $table = $('#myTable');
    var $tdList = $table.find('td');
    
    $tdList.each(function(){
        //获取单元格中的值
        var oldValue = $(this).text();
        //创建input
        var $input = $('<input type="text" class="form-control">');
        $input.val(oldValue);
        //替换
        $(this).html($input);
    });
    
    //监听input的keyup事件，即键盘按键事件
    $('input').live('keyup', function(event){
        //判断按键是否为enter键
        if(event.keyCode == 13) {
            //获取输入框的值
            var newValue = $(this).val();
            //替换单元格中的值
            $(this).parent().text(newValue);
        }
    });
});

Code analysis:

1. $table = $('#myTable');: Get table elements .
2. $tdList = $table.find('td');: Get all cell elements in the table.
3. $tdList.each(): Traverse all cells and create an input box for each cell.
4. $(this).html($input);: Insert the input box into the cell and replace the original content in the cell.
5. $('input').live('keyup', function(event){}): Monitor keyboard key events of all input boxes.
6. if(event.keyCode == 13): Determine whether the Enter key is pressed.
7. $(this).parent().text(newValue): Replace the content in the input box with the original content in the cell.

Summary

The above example code dynamically creates an input box for each cell by traversing all cells, enters new data in the input box, and presses the Enter key. , replace the original data with the new data. This method is suitable for modifying table data one by one.

As a powerful JavaScript library, jQuery also has considerable advantages in modifying table content. We can use jQuery to achieve more efficient and convenient table content modification with its rich functions.

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