jQuery Forum

Thanks for you reply

Is there a specific reason why it is working in FF and Chrome? 

It is used in an internal LAN, speed is not that much of an issue, however I always plan to optimize, but first I'd like to get my code working before I start with that ;)

Those browsers implement String.prototype.trim, and therefore it works.  If you want a cross-browser solution, use jQuery.trim() as demonstrated above.

Alright, thank you very much, I'll definately look into more optimized selectors when I have all of my code and CSS working. 

Is caching objects really that much of a perfomance savor? I have a page with dynamically added elements, which can be added, deleted, sorted and each time the code changes and the object itself  as well (also id's of elements within 'the' parent element)

Even within a single handler, the impact of caching can be very siginficant.  When you do

    jQuery('#item-info textarea[name=item[description]]').val('');
    jQuery('#item-info select[name=item[responsible]]').val('*');
    jQuery('#item-info input[name=item[due-date]]').val('No due date');
    jQuery('#item-info input[name=item[due-date]]').addClass('placeholder');

 
var inputs = jQuery("#item-info :input");
inputs.filter("[name=item[description]]").val("");
inputs.filter("[name=item[responsible]]").val("*");
inputs.filter("[name=item[due-date]]").val("No due date").addClass("placeholder");

Thanks, I wasn't aware of the :input and .filter methods. I am just starting to learn jQuery for 1.5 weeks now :) 

Here you go.

=============

String.prototype.trim = function(){
    return this.replace(/(^\s+|\s+$)/g, '');
}