How to read line by line of a text area HTML tag

Question

I have a text area where each line contains Integer value like follows

      1234
      4321
     123445

I want to check if the user has re

Answer 1

This would give you all valid numeric values in lines. You can change the loop to validate, strip out invalid characters, etc - whichever you want.

var lines = [];
$('#my_textarea_selector').val().split("\n").each(function ()
{
    if (parseInt($(this) != 'NaN')
        lines[] = parseInt($(this));
}