遍历span id的传递id作为函数的值

Question

Supposing I have a table that has been dynamically generated with one of the columns having a unique span id:

<tr><td><span id="123"></span></td></tr>
<tr><td><span id="124"></span></td></tr>
<tr><td><span id="125"></span></td></tr>
<tr><td><span id="126"></span></td></tr>

What is the best way to iterate through the spans with a javascript function so that the span id can be passed as a value that the function can then use?

Answer 1

Assign a same class to each of the span items and then make use of getElementsByClassName and iterate through the array.

var targetElements = document.getElementsByClassName('target');

Update (with jQuery)

You may be able to use iterate through this using the following code as well.

jQuery('table td > span').each(function() {
    var id = jQuery(this).attr('id');
    // Your logic
});

Answer 2

Use the jQuery each function to iterate over your span s and do something with their id property:

 $('#table-id span').each(handleElement) function handleElement () { var id = this.id // Do something with `id` console.log(id) } 

 <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> <table id="table-id"> <tr><td><span id="123"></span></td></tr> <tr><td><span id="124"></span></td></tr> <tr><td><span id="125"></span></td></tr> <tr><td><span id="126"></span></td></tr> </table> 

Answer 3

1. Use the jquery loop construct to loop through the table data.

   $("tr td").each(function() { var foo = $(this).find("span").attr('id'); });