There are for example divas:

<div name="klass[1][2]"></div>

How can I check the value inside the second square brackets (in this case "2") and replace it with the value I need?

  • I solved the question already, but thank you all. =) - Shevtsov Eugene

2 answers 2

The replace method allows you to use your function to calculate the replacement.

 function change2ndInd(str, i1, i2, offset) { if(i2==2) return "["+i1+"]["+i2*3+"]"; else return str; } var result = "klass[1][2]".replace(/\[(\d+)\]\[(\d+)\]/gi, change2ndInd); alert(result); // klass[1][6]

    Many ways, like so

     $(function() { value = 'замена'; var data = $('div').attr('name').replace(/(.+)(\[.+?\])\[(.+?)\]/gi, '$1$2[' + value + ']'); $('div').attr('name', data); $('div').after(data); }); 
     <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script> <div name="klass[1][2]"></div>