The questions in this third quiz on jQuery are on the topics covered in the jQuery Advanced section of the site. The table below lists the
lessons, a description of the lesson content and the the quiz question number range.
Lesson Summary
Click on a lesson in the table to go to that lesson for a refresher on the topics for that lesson.
jQuery Quiz
The quiz below tests your knowledge of the material learnt in the jQuery Advanced section of the site.
Question 1 : What is the only document loading method that has not been deprecated?
- The <code>.ready()</code> document loading method has not been deprecated. The <code>.resize()</code> and <code>.scroll()</code> methods are not deprecated but are browser methods.
Question 2 : What is the following code example a shorthand version of?
$(function(){});
- This code is a shorthand version of the <code>.ready()</code> function.
Question 3 : What is a major advantage of using the .ready() function instead of window.onload?
- The <code>.ready()</code> document loading method is fired after the document is fully parsed and converted into the DOM tree and can be used multiple times within the same HTML document.
Question 4 : How many event handlers are bound to the .dblclick() method?
- There is 1 event handler bound to the <code>.dblclick()</code> method.
Question 5 : Which jQuery event method was removed in 1.9?
-The <code>.toggle()</code> jQuery event method was removed in 1.9.
Question 6 : How many event handlers are bound to the .hover() method?
- There are 2 event handlers bound to the <code>.hover()</code> method.
Question 7 : The .select() form event method can only be used with text?
- Yes, the <code>.select()</code> form event method can only be used with <code>input type=text</code> and <code>textarea</code> elements.
Question 8 : The submit event can be triggered by clicking an <input type=image> element?
- Yes, the submit event can be triggered by clicking an <code>input type=image </code> element.
Question 9 : What method can we use instead of .focus() when we want to run an element's focus event handlers without setting focus on the element?
- We can use <code>.triggerhandler()</code> instead of <code>.focus()</code> when we want to run an element's focus event handlers without setting focus on the element.
Question 10 : Starting with jQuery version 1.7 more flexible event binding can be achieved using which method?
- Starting with jQuery version 1.7 more flexible event binding can be achieved using the <code>.on()</code> method.
Question 11 : Which jQuery method is used to preserve a reference to the calling object when the value of the this special operator is changed?
- The <code>jQuery.proxy()</code> method is used to preserve a reference to the calling object when the value of the <code>this</code> special operator is changed.
Question 12 : What is the preferred method of event delegation?
- The preferred method of event delegation is using the <code>.on()</code> method and <code>.off()</code> methods.
Question 13 : When an event reaches an element, all handlers bound to that event type for the element are fired, but in what order are mulitple handlers fired?
- If multiple handlers are registered for the element, they will always execute in the order in which they were bound.
Question 14 : What property do we use to find out the DOM element, or descendant thereof, that initiated the event.
- We use the <code>event.target</code> property to find out the DOM element, or descendant thereof, that initiated the event.
Question 15 : What property do we use to find out the key or button that was pressed for keyboard and mouse events?
- We use the <code>event.which</code> property to find out the key or button that was pressed for keyboard and mouse events.
Question 16 : A callbacks list can only be fired once?
- The default behaviour of a <code>callbacks</code> list is the same as an <code>event callback</code> list and so the list can be 'fired' multiple times. .
Question 17 : We have a choice of 4 flags to tailor the jQuery.Callbacks() method all of which are mutually exclusive?
- The 4 flags we can use with the <code>jQuery.Callbacks()</code> can be used in tandem to create a cumulative effect.
Question 18 : We can use the callbacks.empty() method to check whether a callbacks list is empty?
- The <code>callbacks.empty()</code> method will actually empty a <code>callbacks</code> list rather than check if it is empty.
Question 19 : A Deferred object can have one of three states, resolved, rejected and?
- The third state a <code>Deferred</code> object can have is <code>pending</code>.
Question 20 : We can protect our Deferred objects from state changes by other code by creating which object for the Deferred?
- We can protect our <code>Deferred</code> objects from state changes by other code by creating a <code>Promise</code> object for the <code>Deferred</code>.
Question 21 : Which method can we use for combining Deferred objects?
- We can use the <code>.when()</code> jQuery method for combining <code>Deferred</code> objects.
Question 22 : What does the term Ajax stands for?
- The term Ajax stands for Asynchronous JavaScript and XML.
Question 23 : What object do jQuery Ajax methods return?
- jQuery Ajax methods return a <code>jqXHR</code> object.
Question 24 : There are 3 Ajax Low-Level Interface Methods jQuery.ajax(), jQuery.ajaxSetup() and?
- The third Ajax Low-Level Interface Method is <code>jQuery.ajaxPrefilter()</code>
Question 25 : Which method do all the Ajax shorthand methods call under the bonnet?
- All the Ajax shorthand methods call the <code>jQuery.ajax()</code> method under the bonnet.
Question 26 : Which Ajax shorthand method is used to populate the matched element from the returned HTML on successful completion?
- We use the <code>.load()</code> Ajax shorthand method to populate the matched element from the returned HTML on successful completion.
Question 27 : Which Ajax shorthand method can we use instead of the following code?
$.ajax({
url: url,
dataType: 'html',
data: data,
success: callback
});
- We can use the <code>.load()</code> Ajax shorthand method for this code.
Question 28 : Which jQuery.param() Ajax method is used to create a serialized representation of an array or object, suitable for what?
- We use the <code>jQuery.param()</code> Ajax method to create a serialized representation of an array or object, suitable for use in a URL query string or Ajax request.
Question 29 : Which jQuery Ajax method is used for form element string encryption?
- We use the <code>.serialize()</code> jQuery Ajax method for form element string encryption.
Question 30 : Which jQuery Ajax method is used in conjunction with the JSON.stringify() JavaScript method?
- We use the <code>.serializeArray()</code> jQuery Ajax method in conjunction with the <code>JSON.stringify()</code> JavaScript method.
Question 31 : How many Ajax global event handler methods are there?
- There are 6 Ajax global event handler methods.
Question 32 : The global event handler methods can be used as 'catch all' handlers for all Ajax requests that are made during the duration of a pages lifecycle?
- Yes, the global event handler methods can be used as 'catch all' handlers for all Ajax requests that are made during the duration of a pages lifecycle.
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