Tony Thomas » JQuery

Baseline WordPress Theme Version 1.0.2

admin — Mon, 22 Mar 2010 17:34:43 +0000

I’ve uploaded a new version of the Baseline theme for WordPress development. The only change this time around is that I’m using wp_enqueue_script() to include WordPress’ existing copy of JQuery. (Hat tip to Chris Coyier.) This seems like a significant enough change to merit a small version bump.

I used the Baseline theme as a launching pad for this website. At least for me, it serves as a good starting point when you begin developing a brand new theme.

If you find this useful, you might be interested in checking out Jeff Star’s functions.php template.Similar Posts:

No Flash Required

admin — Sat, 20 Mar 2010 17:30:30 +0000

UPDATE II

I just updated the theme of this site so:

It uses even less JavaScript (all animations and transformations are done w/ CSS3 tranforms)
It’s HTML5

More on both those points in a post soon. The upshot is that this post refers to a past theme and may be confusing.

I just added a pretty sweet bit of eye candy to my nav menu using strictly CSS & JQuery. The method is here. The code is here.

You do need to have a either a webKit or Mozilla browser for it to work properly. The point is that there are fewer and fewer things that Flash can do that can’t be done with HTML, JavaScript and CSS. In fact, just about every single bit of animation I’ve had done in Flash over the last couple of years could be recreated with JQuery & CSS3.

UPDATE

Since I couldn’t get the z-index to function properly in Internet Explorer, I used JQuery’s .browser property so the function only runs in supported browsers–namely, Mozilla or WebKit. The function actually degraded fairly well, except for Internet Explorer’s buggy handling of z-index. For reference, I’ve included my version of the plug-in because it has this and other subtle variations.

(function($) {
	if ($.browser.webkit || $.browser.mozilla) {

		$.fn.spasticNav = function(options) {

			options = $.extend({
				overlap : 2,
				speed : 500,
				reset : 1500,
				color : '#BDD2FF',
				easing : 'easeOutExpo'
			}, options);

			return this.each(function() {

			 	var nav = $(this),
			 		currentPageItem = $('.current_page_item', nav),
			 		blob,
			 		reset;

			 	$('').css({
			 		width : currentPageItem.outerWidth(),
			 		height : currentPageItem.outerHeight() + options.overlap,
			 		left : currentPageItem.position().left,
			 		top : currentPageItem.position().top - options.overlap / 2,
			 		backgroundColor : options.color
			 	}).appendTo(this);

				$('.current_page_item a').css('z-index', 1000);

			 	blob = $('#blob', nav);

				$('li:not(#blob)', nav).hover(function() {
					// mouse over
					clearTimeout(reset);
					blob.animate(
						{
							left : $(this).position().left,
							width : $(this).width()
						},
						{
							duration : options.speed,
							easing : options.easing,
							queue : false
						}
					);
				}, function() {
					// mouse out
					reset = setTimeout(function() {
						blob.animate({
							width : currentPageItem.outerWidth(),
							left : currentPageItem.position().left
						}, options.speed)
					}, options.reset);

				});

			}); // end each

		};

	}

})(jQuery);

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Display Form Fields Based on Selection Using JQuery

admin — Mon, 15 Mar 2010 02:59:52 +0000

This is a simple method of showing and hiding form elements based on the user’s selection. It’s based on this article with a couple of very minor changes. (Dare I say, improvements?) I’m going to assume you’ve already included the JQuery library so I won’t cover that here. I want to go straight to the code. (View the example page here.)

First, the form:


	
		Questionnaire
		
			Choose 1 to make the next select list appear.
			
		
		
			
				Select "Yes" to make the next option appear.
				
			
		
		 
			
				This is the last question.

Now make sure your “hide” css class is hidden:

.hide
{

	display:none;

}

Now with the wonderful elegance of JQuery, we’ll tell the browser to display the hidden divs based on the user’s selection:

$(document).ready(function(){
	$("#select1").change(function(){

		if ($(this).val() == "1" ) {

			$("#hide1").slideDown("fast"); //Slide Down Effect

		} else {

			$("#hide1").slideUp("fast");	//Slide Up Effect

		}
	});

	$("#select2").change(function(){

		if ($(this).val() == "1" ) {

			$("#hide2").slideDown("fast"); //Slide Down Effect

		} else {

			$("#hide2").slideUp("fast");	//Slide Up Effect

		}
	});
});

Let’s look at what’s happening here. First, we have a form with select boxes with ids “select1″, “select2″ and “select3″. The last two are hidden by enclosing them in a div with our “hide” class. (Incidentally, Blueprint provides a “hide” class for you if you use that framework.)

Next we tell JQuery that as soon as “select1″ is changed, we need to evaluate the new value. In this case, if the new value is “1″, we want to display the div with the id “hide1″ using JQuery’s slideDown effect. We do this with JQuery’s change event.

$("#select1").change(function(){ // when #select1 changes

		if ($(this).val() == "1" ) { // see if the new value is "1"

			$(".hide1").slideDown("fast"); // if it is "1", display the .hide1 div with the slideDown effect

		} else {

			$(".hide1").slideUp("fast");	//otherwise, hide it with the slideUp effect

		}
	});

Once “select2″ is displayed, we can evaluate it to see if we need to display “select3″ which is in a div with a “hide” class and “hide2″ id.

$("#select2").change(function(){ // once select2 is changed

		if ($(this).val() == "1" ) { // see if the new value is "1"

			$(".hide2").slideDown("fast"); // if it is, display the hide2 div using slideDown

		} else {

			$(".hide2").slideUp("fast");	// otherwise hide it using slideUp

		}
	});

Remarkably simple really. Review the working example and code here.

Update (March 15, 2010)

You also could show/hide a single form element by id rather than enclose them in a div. I enclosed them in a div 1.) so I could hide the label and 2.) because in my application where I use this solution, I’m actually hiding a whole group of fields.

Resources

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