Jquery 克隆只重复一次。 需要重复多次

Question

I'm working on some existing code which is in html tables. I need to copy the text from the 'th' header rows and duplicate them inside the corresponding td cells for every subsequent row. I have managed to get the header row to copy but it will only repeat on the first row. How can I get it to repeat on every row that follows? Thanks!

 $(document).ready(function() { $('.head').each(function(i) { var $content = $('.new').eq(i); $(this).clone().prependTo($content); }); });

 table, tbody, tr, th, td { border: 1px solid #000; }

 <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script> <div> <table id="table-container"> <tbody> <tr class="header"> <th class="head">Header 1</th> <th class="head">Header 2</th> <th class="head">Header 3</th> <th class="head">Header 4</th> </tr> <tr class="row>"> <td class="new">Row 1</td> <td class="new">Row 2</td> <td class="new">Row 3</td> <td class="new">Row 4</td> </tr > <tr class="alt>"> <td class="new">Row 1</td> <td class="new">Row 2</td> <td class="new">Row 3</td> <td class="new">Row 4</td> </tr> </tbody> </table> </div>

Answer 1

Loop over the table rows except the .header one, and then inside loop over the cells of the current row, and prepend the clone of the corresponding .head cell.

 $(document).ready(function() { $('tr:not(.header)').each(function() { $(this).find('.new').each(function(i) { $(this).prepend($('.head').eq(i).clone()); }); }); });

 table, tbody, tr, th, td { border: 1px solid #000; }

 <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script> <div> <table id="table-container"> <tbody> <tr class="header"> <th class="head">Header 1</th> <th class="head">Header 2</th> <th class="head">Header 3</th> <th class="head">Header 4</th> </tr> <tr class="row>"> <td class="new">Row 1</td> <td class="new">Row 2</td> <td class="new">Row 3</td> <td class="new">Row 4</td> </tr > <tr class="alt>"> <td class="new">Row 1</td> <td class="new">Row 2</td> <td class="new">Row 3</td> <td class="new">Row 4</td> </tr> </tbody> </table> </div>