attribute « performance « jQuery Q&A

1. jQuery element[attribute=something] vs element.class performance    stackoverflow.com

I am wondering which way would end up being faster, selecting elements by:

$('element[href=#my_link]');

$('element.my_class');

2. What are the javascript performance tradeoffs in adding id's to dom elements?    stackoverflow.com

For example, I have a website which has a dynamically-generated segment of its dom which looks roughly like this:

<div id="master">
  <div class="child"> ... </div>
  <div class="child"> ... </div>
  ...

3. accessing element attributes with jquery vs. plain javascript, which is faster?    stackoverflow.com

Which is faster: $("#element")[0].value or $("#element").val()? If the former is faster, what is the purpose of the latter?

4. Is it better to use class selectors or custom attribute selectors with jquery?    stackoverflow.com

I have read that it is better to select using "id" than "class" with jquery. However, say i have several divs on a page that i need to select with jquery ...

5. What gives better performance, attributes via html or jquery?    stackoverflow.com

so sometimes my html needs some special classes/div's/attributes/.. for the jquery scripts to work (the "no-javaSript" version of the site doesn't need these elements to work properly). I'm sure you know ...

6. Performance issue when I try to attribute title to DropDownlist using jQuery    stackoverflow.com

I am using below code to select all dropdowns using jQuery and attributing title value to it.

jq("select option").each(function () {
   jq(this).attr({ 'title': jq(this).html() });
});

7. jQuery select by class VS select by attribute    stackoverflow.com

I want just to ask for an opinion of perfomance: Is more faster selecting elements by class name or by attribute name with jquery? Example I have 100 DIVs element in this form:

<div ...

8. Will there be a performance increase if using custom attribute selectors instead of long mixed class/tag selectors with jQuery?    stackoverflow.com

I noticed that some of developers in our team are creating long jQuery selectors like:

'div.someclass > span.someotherclass ...'

9. Performance of custom attribute selectors    forum.jquery.com

Hi all,Can anyone explain the performance impact of using custom attribute selectors?e.g., For the markup: , I'm using selectors like: $('input[itemCode="item1"]');There are a number of dynamically added controls, which store few id's in their custom attributes. I have to loop through and select controls based on these custom attributes. However, when I am using these selectors, I'm ...