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jQuery Keynote - Spring 2011
 

jQuery Keynote - Spring 2011

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Keynote talk given at the 2011 jQuery Conference in the SF Valley.

Keynote talk given at the 2011 jQuery Conference in the SF Valley.

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    jQuery Keynote - Spring 2011 jQuery Keynote - Spring 2011 Presentation Transcript

    • State of jQuery Spring 2011 John Resig
    • State of the Project
    • Project
    • Spending Money• All expenditures are handled via public voting• What have we spent money on? • Team Meetings • Conferences • Developer time
    • Sponsored Projects• jQuery UI • Scott G• jQuery Mobile • Filament Group• jQuery UI Grid • Richard, Joern, and Scott
    • Spending Money• What will we be spending money on? • Getting more developer time to train and mentor new developers • Design work and jQuery Mobile • More team meetings and conferences
    • New Team and Eboard• Recently Joined: • Adam Sontag • Working with the UI and Bug Triage teams • Dan Heberden • Working with Infrastructure and Bug Triage team
    • jQuery Core and Bug Triage Teams• We’ve added a number of new committers • Dave Methvin (dmethvin) • Julian Aubourg (jaubourg) • Anton Matzneller (jitter) • Timmy Willison (timwillison)• We also got a ton of help from Colin Snover in organizing the team.
    • New CoreDevelopment Process• Weekly, public, team meetings• Defined release dates and schedule• Frequent discussion in #jquery-dev (IRC) • Active participation of the committers and the bug triage team
    • Weekly Meeting Notes
    • Bug Triage Team• Responsible for processing all the bugs in the bug tracker • Make sure test cases are filed• Work through pulls in the Github pull request queue• Make sure the test suite is passing
    • Bugs
    • Roadmap Decisions• Put up a public form for people to submit possible feature suggestions• The team works through all the feature suggestions and creates a list • All of this is done in a publicly and discussed in a public meeting
    • Roadmap
    • New Releases• jQuery 1.4.4, 1.5, 1.5.1, 1.5.2, and 1.6!• Official Plugins Status• jQuery Mobile Alphas 2, 3, and 4
    • jQuery 1.6b1• Whole bunch of improvements • Rewrite of .attr()
    • .attr() Rewrite• Provide a full series of .attr() hooks• jQuery.attrHooks.selected = { set: function( elem, value ) { if ( value === false ) { jQuery.removeAttr(elem, “selected”); return value; } } };
    • .prop()• Split apart attr/prop: • .attr(“selected”) -> “selected” • .prop(“selectedIndex”) -> 1 • .prop(“selected”) -> true
    • .attr() Performance• This rewrite also yields performance increases of around 85%!
    • valHooks• Similar to cssHooks and valHooks but handles .val() as well • Inputs tend to have different support depending upon the platform• Getting value is over 147% faster!
    • Better Support Tests• Interesting technique: • document.createElement(“body”) • Do it before the DOM is ready! • You can do visual DOM tests before they’re displayed • Prevents flash of unstyled content
    • :focus Selector• Make sure :focus works on all platforms: $(“input:focus”) -> Find the focused input
    • Faster Triggering and Data• Triggering performance has been improved dramatically • Which increases the performance of .data() as a result!• .data() is around 115% faster!
    • Convenient Methodsfor Checking Elements• .is( Element ) • Simpler way to check equality• .filter( Element ) • Check if a set has an element• .find( Element ) • Equivalent to .contains()
    • Synced Animations• Make it possible to ensure that animations run at the same time • Yielding animations that are less “glitchy”• Animations are all run at the same timer cluster (timers tend to run every 15ms or so, depending upon the browser)
    • requestAnimationFrame• New feature provided by the browser• Makes it easier to create high performance, smoother, animations
    • $.map( Object )• $.map( Array ) worked before• Now $.map( Object ) can map properties to other values• $.map({ test: 1 }, function( name, value ) { return value + 1; });
    • Use Function.prototype.bind• Use the method for jQuery.proxy()• Utilize the browsers native binding mechanism • Force the `this` of a function to be a particular object
    • Relative .css()• Bringing the functionality back from .animate(): • .css( “height”, “+=10” ) • Updates the height relative to the current height
    • Official Plugins• We’ve made a change in policy regarding official plugins• Official plugins will be maintained by the jQuery team (UI, Core)• Only plugins that fit into those teams will be supported
    • Existing Plugins• Into the jQuery Core team: • Color, Mousewheel, Easing, CSS Hooks• Into the jQuery UI team: • jQuery Templates
    • jQuery Mobile
    • Response• Response has been overwhelmingly positive• We’re getting support from major mobile browsers • RIM, Nokia, IE Mobile• And major companies: • Microsoft, Adobe, Brightcove, BBC
    • Better Browser Support• Firefox Mobile• Opera Mobile and Mini• Windows Phone 7 • (and Internet Explorer itself!)
    • What’s Landed?• Tons of bug fixes and enhancements• Ajax form handling• Unit Tests (!)• Excellent keyboard and accessibility support• Touch optimized datepicker• Working great in PhoneGap
    • Rewrites• Faster performance across the board• All widgets using jQuery UI widget factory
    • Navigation Refactored• Rewrite of core navigation model • Including using the new pushState!• history.pushState(stateObj, "page 2", "bar.html");• URL now becomes: /bar.html• (but an actual page load isn’t done!)
    • Media Query Helpers• New classes: .portrait, .landscape• label.ui-input-text { display: block; } .min-width-480px label.ui-input-text { display: inline-block; }
    • Namespaced data-• jQuery Mobile is predominantly configured through data- attributes• <div data-role=”page”></div>• You can now namespace the attributes, if you wish.• <div data-jqm-role=”page”></div>
    • “Fast Click”• It’s surprisingly hard to make click, and other mouse events, work as fast as possible• There are a number of assumptions in place regarding touch events that make this hard.• We now fix this straight in jQuery Mobile.
    • Mobile Beta• jQuery Mobile Beta 1 is the next upcoming release!• Even though it’s an alpha many people are already deploying applications that work great.
    • Enjoy the Conference!• More information: • http://blog.jquery.com/ (jQuery 1.6b1) • http://jquerymobile.com/