if ($(selectionOne) === $(selectionTwo)) {

}

You can compare DOM objects though…

if ($(selectionOne)[0] === $(selectionTwo)[0]) {

} 

But that’s only really useful if you’re comparing a single element, not a collection.

If you need to compare a collection of elements, this StackOverflow thread has the answer:

var divs = $("div");
var divs2 = $("div");

if (divs.length == divs2.length && divs.length == divs.filter(divs2).length) {         
  // They are equal
}

A StackOverflow thread has some pretty good solutions.

Get the attribute, check the value

var attr = $(this).attr('name');

// For some browsers, `attr` is undefined; for others, `attr` is false. Check for both.
if (typeof attr !== typeof undefined && attr !== false) {
  // Element has this attribute
}

Native JavaScript has a way

If you only have a jQuery reference…

$(this)[0].hasAttribute("name");

jQObject[0].hasAttribute("name");

Filter the selection

$(this).is('[name]');

$(this).filter("[name='choice']");

No such event exists in native JavaScript.

You can fake it by setting a timeout to run the code you want to run when resizing stops. Then clear that timeout every time a resize event fires. That way the timeout will only finish if that timeout actually finishes.

var resizeTimer;

$(window).on('resize', function(e) {

  clearTimeout(resizeTimer);
  resizeTimer = setTimeout(function() {

    // Run code here, resizing has "stopped"
            
  }, 250);

});

Similar to debouncing.

jQuery.extend({

  getQueryParameters : function(str) {
	  return (str || document.location.search).replace(/(^\?)/,'').split("&").map(function(n){return n = n.split("="),this[n[0]] = n[1],this}.bind({}))[0];
  }

});

So if the URL is:

You can do:

var queryParams = $.getQueryParameters();

And queryParams will be an object like:

{
   "lunch": "sandwich",
   "dinner": "stirfry"
}

Plugin format

jQuery.fn.putCursorAtEnd = function() {

  return this.each(function() {
    
    // Cache references
    var $el = $(this),
        el = this;

    // Only focus if input isn't already
    if (!$el.is(":focus")) {
     $el.focus();
    }

    // If this function exists... (IE 9+)
    if (el.setSelectionRange) {

      // Double the length because Opera is inconsistent about whether a carriage return is one character or two.
      var len = $el.val().length * 2;
      
      // Timeout seems to be required for Blink
      setTimeout(function() {
        el.setSelectionRange(len, len);
      }, 1);
    
    } else {
      
      // As a fallback, replace the contents with itself
      // Doesn't work in Chrome, but Chrome supports setSelectionRange
      $el.val($el.val());
      
    }

    // Scroll to the bottom, in case we're in a tall textarea
    // (Necessary for Firefox and Chrome)
    this.scrollTop = 999999;

  });

};

Usage

var searchInput = $("#search");

searchInput
  .putCursorAtEnd() // should be chainable
  .on("focus", function() { // could be on any event
    searchInput.putCursorAtEnd()
  });

Demo

See the Pen Move Cursor To End of Textarea or Input by Chris Coyier (@chriscoyier) on CodePen.