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jQuery y Rails - Take a walk on the wild side
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Christos Zisopoulos
September 26, 2011
Programming
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jQuery y Rails - Take a walk on the wild side
Christos Zisopoulos
September 26, 2011
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Transcript
jQuery y Rails “Take a walk on the wild side”
Christos Zisopoulos jobandtalent.com
¿Quien soy?
¿Quien soy? Soy un desarrollador de Rails (como la mayoría
de vosotros, me imagino)
¿Quien soy? Pero a veces toca hacer Javascript (el síndrome
del “lone developer”)
¿Quien soy? Una confesión: Me gusta Javascript (pero odio a
los navegadores)
¿Que es? Es una librería Javascript para manipulación sofisticada del
DOM independiente del navegador.
La filosofía
Encontrar algo... (casi todo es un objeto jQuery)
Encontrar algo... $('div.info p:first') (casi todo es un objeto jQuery)
...y hacer algo con ello $('div.info p:first') .text('Todo bien!') .css('color',
'green') .fadeIn()
Encontrar algo <div> <p><span>...</span></p> <p><div><strong>Hola</strong></div></p> <p>...</p> <p>...</p> </div>
$('div'); <div> <p><span>...</span></p> <p><div><strong>Hola</strong></div></p> <p>...</p> <p>...</p> </div>
$('div:first'); <div> <p><span>...</span></p> <p><div><strong>Hola</strong></div></p> <p>...</p> <p>...</p> </div>
$('p:last'); <div> <p><span>...</span></p> <p><div><strong>Hola</strong></div></p> <p>...</p> <p>...</p> </div>
$('p:gt(2)'); <div> <p><span>...</span></p> <p><div><strong>Hola</strong></div></p> <p>...</p> <p>...</p> </div>
$('strong:contains(Hola)'); <div> <p><span>...</span></p> <p><div><strong>Hola</strong></div></p> <p>...</p> <p>...</p> </div>
CSS selectors #id, tag, .class, * ancestor descendant parent >
child prev + next prev ~ siblings E[@attr] E[@attr=val] E[@attr^=val] E[@attr$=val] E[@attr*=val] E[@attr=val][@attr=val]
CSS selectors #id, tag, .class, * ancestor descendant parent >
child prev + next prev ~ siblings E[@attr] E[@attr=val] E[@attr^=val] E[@attr$=val] E[@attr*=val] E[@attr=val][@attr=val]
CSS selectors :first :last :not(selector) :even :odd :eq(index) :gt(index) :lt(index)
:contains(text) :empty :has(selector) :parent :nth-child(index) :first-child :last-child :only-child
CSS selectors :first :last :not(selector) :even :odd :eq(index) :gt(index) :lt(index)
:contains(text) :empty :has(selector) :parent :nth-child(index) :first-child :last-child :only-child
CSS selectors :input :text :password :radio :checkbox :submit :image :reset
:button :file :hidden :enabled :disabled :checked :selected :hidden :visible :header :animated
CSS selectors :input :text :password :radio :checkbox :submit :image :reset
:button :file :hidden :enabled :disabled :checked :selected :hidden :visible :header :animated
...y hacer algo. <div> <p><span>...</span></p> <p><div><strong>Hola</strong></div></p> <p>...</p> <p>...</p> </div>
$('div:first').slideDown(); <div> <p><span>...</span></p> <p><div><strong>Hola</strong></div></p> <p>...</p> <p>...</p> </div>
$('p:last').css('color', 'red'); <div> <p><span>...</span></p> <p><div><strong>Hola</strong></div></p> <p>...</p> <p>...</p> </div>
$('strong:contains(Hola)'). wrap('<em></em>'); <div> <p><span>...</span></p> <p><div><em><strong>Hola</strong><em></div></p> <p>...</p> <p>...</p> </div>
<div> <p><span>...</span></p> <p><div><strong>Hola</strong></div></p> <p>...</p> <p>...</p> </div> $('p:even'). css('background-color', 'grey');
¿Que se puede hacer? Atravesar Manipular Eventos Efectos AJAX
Atravesar .hasClass(class) .filter(expr) .is(expr) .map(callback) .not(expr) .slice(start, end) .add(e) .children(e)
.siblings(e) .contents() .find(e) .next(e), .nextAll(e) .prev(e), .prevAll(e) .each(callback) .size(), .length .get(), .get(index) .index(subject) .andSelf() .end()
Atravesar .hasClass(class) .filter(expr) .is(expr) .map(callback) .not(expr) .slice(start, end) .add(e) .children(e)
.siblings(e) .contents() .find(e) .next(e), .nextAll(e) .prev(e), .prevAll(e) .each(callback) .size(), .length .get(), .get(index) .index(subject) .andSelf() .end()
Manipular .append(c) .appendTo(elem) .prepend(c) .prependTo(elem) .wrap(html) .wrap(elem) .wrapAll(html) .wrapAll(elem) .wrapInner(html)
.wrapInner(elem) .after(c), .before(c) .insertAfter(c) .insertBefore(c) .replaceWith(c) .replaceAll(selector) .empty() .remove(expr) .clone(), clone(true)
Manipular .append(c) .appendTo(elem) .prepend(c) .prependTo(elem) .wrap(html) .wrap(elem) .wrapAll(html) .wrapAll(elem) .wrapInner(html)
.wrapInner(elem) .after(c), .before(c) .insertAfter(c) .insertBefore(c) .replaceWith(c) .replaceAll(selector) .empty() .remove(expr) .clone(), clone(true)
Manipular .css(name) .css(name, value) .css(properties) .html() .html(value) .text() .text(value) .val()
.val(value) .attr(name) .attr(name, value) .attr(name, function) .attr(properties) .removeAttr(name) .addClass(class) .removeClass(class) .toggleClass(class) .offset()
Manipular .css(name) .css(name, value) .css(properties) .html() .html(value) .text() .text(value) .val()
.val(value) .attr(name) .attr(name, value) .attr(name, function) .attr(properties) .removeAttr(name) .addClass(class) .removeClass(class) .toggleClass(class) .offset()
Eventos
$('a.remote').bind('click', function(e) {...}); $('p').one('dblclick', function(e) {...}); $('p > a.remote').bind('mouseover', function(e)
{...});
$('div') .bind('mySpecialEvent', function(e) {...}); $('div') .trigger('mySpecialEvent');
$("p").click(function () { $(this).slideUp(); }); $("p").hover(function () { $(this).addClass("hilite"); },
function () { $(this).removeClass("hilite"); });
Eventos .bind(type, data, fn) .one(type, data, fn) .trigger(type, data) .triggerHandler(type,
data) .unbind(type, data) .load(fn), .resize(fn) .scroll(fn) .ready(fn) .error(), .error(fn) .mousedown(fn) .mouseup(fn) .mouseout(fn) .mousover(fn) .mousemove(fn) .keydown() .keydown(fn) .keyup() .keyup(fn) .keypress() .keypress(fn)
Eventos .bind(type, data, fn) .one(type, data, fn) .trigger(type, data) .triggerHandler(type,
data) .unbind(type, data) .load(fn), .resize(fn) .scroll(fn) .ready(fn) .error(), .error(fn) .mousedown(fn) .mouseup(fn) .mouseout(fn) .mousover(fn) .mousemove(fn) .keydown() .keydown(fn) .keyup() .keyup(fn) .keypress() .keypress(fn)
Eventos .hover(fnEnter, fnLeave) .toggle(fnOn, fnOff) .blur() .blur(fn) .unblur() .unblur(fn) .click()
.click(fn) .dblclick() .dblclick(fn) .submit() .submit(fn) .focus() .focus(fn) .select() .select(fn) .unload() .unload(fn)
Eventos .hover(fnEnter, fnLeave) .toggle(fnOn, fnOff) .blur() .blur(fn) .unblur() .unblur(fn) .click()
.click(fn) .dblclick() .dblclick(fn) .submit() .submit(fn) .focus() .focus(fn) .select() .select(fn) .unload() .unload(fn)
Efectos
Efectos .show() .show(speed, callback) .hide() .hide(speed, callback) .toggle() .slideUp() .slideUp(speed,
callback) .slideDown() .slideDown(speed, callback) .fadeIn() .fadeIn(speed, callback) .fadeOut() .fadeOut(speed, callback) .fadeTo(speed, opacity, callback)
Efectos .show() .show(speed, callback) .hide() .hide(speed, callback) .toggle() .slideUp() .slideUp(speed,
callback) .slideDown() .slideDown(speed, callback) .fadeIn() .fadeIn(speed, callback) .fadeOut() .fadeOut(speed, callback) .fadeTo(speed, opacity, callback)
Efectos .animate(params, duration, easing, callback) .animate(params, options) .stop() .queue() .queue(callback)
.queue(queue) .dequeue()
$("#block").animate({ width: "70%", opacity: 0.4, marginLeft: "0.6in", fontSize: "3em", borderWidth:
"10px" }, 1500 );
AJAX
AJAX $.ajax(options) .load(url, data, callback) .loadIfModified (url, data, callback) $.get
(url, data, callback) $.post (url, data, callback) $.getJSON (url, data, callback) $.getScript (url, data, callback)
$.ajax({ url: "/contacts/search", {data: "q=choan"}, success: function(html){ $("#results").append(html); } });
$.get("/contacts/search", {data: "q=choan"}, function(html){ $("#results").append(html); } });
$("#results") .load("/contacts/search", data: "q=choan")
AJAX .ajaxComplete(callback) .ajaxSend(callback) .ajaxStart(callback) .ajaxStop(callback) .ajaxSuccess(callback) .ajaxError(callback)
AJAX .ajaxComplete(callback) .ajaxSend(callback) .ajaxStart(callback) .ajaxStop(callback) .ajaxSuccess(callback) .ajaxError(callback)
jRails - jQuery on Rails
Instalación ./script/plugin install \ http://ennerchi.googlecode.com/svn/trunk/plugins/jrails rake jrails:install:javascripts
Prototype form_remote_for form_remote_tag link_to_remote observe_field observe_form periodically_call_remote remote_form_for submit_to_remote Scriptaculous
draggable_element drop_receiving_element sortable_element visual_effect RJS hide insert_html remove replace replace_html show toggle Funcionalidad “Drop In”
$.ajaxSetup( { data: { authenticity_token : AUTH_TOKEN } }) $.post("/todo",
{_method:"put"}); $.post("/todo", _method:"put"); Caveat Emptor (#1)
jQuery $('#footerNav') Prototype $('footerNav') Caveat Emptor (#2)
Unobtrusive
¿Que es?
Ejemplo formulario <form class='remote' action="http://search.twitter.com/search"> <input type="text" value=""> <input type="submit"
value="Buscar"> </form> <div id='searchResults'> </div>
Ejemplo formulario $(function() { $('form.remote').each(function() { var url = $(this).attr('action');
$(this).find('input[@type=submit]:first').hide(); $(this).find('input[@type=text]:first') .keyup(function() { var query = $(this).val(); $('#searchResults').load( url + query + ' #results'); }); }); });
Plugins
Livequery $('a').livequery('click', function(event) { alert('clicked'); return false; });
Autocomplete var data = "blat mamuso denegro".split(" "); $("input.suggest").autocomplete(data); $("input.suggest").autocomplete("/contactos");
Autocomplete $("#imageSearch").autocomplete("/images", { width: 320, max: 4, highlight: false, scroll:
true, scrollHeight: 300, formatItem: function(data, i, n, value) { return "<img src='images/" + value + "'/> " + value.split(".")[0]; }, formatResult: function(data, value) { return value.split(".")[0]; } });
Tablesorter <table id="myTable"> <thead> <tr><th>Nombre</th><th>Apellido</th><th>Email</th></tr> </thead> <tbody> <tr><td>Smith</td><td>John</td><td>
[email protected]
</td></tr> <tr><td>Doe</td><td>John</td><td>
[email protected]
</td></tr> <tr><td>Jack</td><td>Ripper</td><td>
[email protected]
</td></tr>
<tbody> </table> $("#myTable").tablesorter();
jQuery form $('#myForm').ajaxForm(); $('#commentsForm').ajaxForm({ target: '#comments', url: '/comments', success: function()
{ alert('Hemos recibido tu comentario'); } });
jQuery UI Interaction Draggable Droppable Resizable Selectable Sortable Widgets Accordion
Autocomplete Colorpicker Dialog Slider Tabs Datepicker Magnifier Progressbar Spinner Effects "Blind" "Bounce" "Clip" "Drop" "Explode" "Fold" "Highlight" "Pulsate" "Scale" "Shake" "Slide" "Transfer"
¿El futuro? Sizzle + (V8, SpiderMonkey, SquirelFish)
¿Preguntas?