Best syntax to test event target in jQuery

I have a keypress handler bound to all input elements on a form, and I need to perform different operations depending on which element received the keypress. All 3 variations below work, but I'd like to know if one (or something else) is preferred and why.

$(':input').keypress(function(e) {
  if($(this).attr('id') === 'foo')  // option 1
    console.log('foo'); 
  if($(this)[0] === $('#bar')[0])   // option 2
    console.log('bar开发者_运维百科');
  if(e.target === $('#baz')[0])     // option 3
    console.log('baz'); 
});

There are few elements on the page, so performance isn't really a concern. It's more of a stylistic/standards/readability issue.

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Option #4:

$(':input').keypress(function(e) {
  if(this.id == 'foo') console.log('foo'); 
});

this will be a DOM element in the handler, no need for the jQuery object checks, just do a string comparison against the native .id DOM property, it's clear, concise and the fastest - win, win here.

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The nicest way is none of these. Use this.id rather than $(this).attr('id') for performance:

if (this.id == 'foo') {

Even nicer would be to use the ID in the selector, if what you are actually looking for is the input element with the ID foo.

$('#foo').keypress(function(e) {

This will be substantially quicker than :input.