My solutions to Learning jQuery 3rd Edition Chapter 6 exercises:
1. When the page loads, pull the body content of exercises-content.html into the content area of the page.
jQuery(document).ready(function ($) {
$('#dictionary').load('exercises-content.html');
});
2. Rather than displaying that whole document at once, create "tooltips" for the letters in the left column by loading just the appropriate letter's content from exercises-content.html when the user's mouse is over the letter.
jQuery(document).ready(function ($) {
$('div[id^="letter-"] a').hover(function () {
var id = $(this).closest('div').attr('id');
//alert(id);
$('#dictionary').load('exercises-content.html #' + id);
}, function () {
$('#dictionary').html('');
});
});
3. Add error handling for this page load, displaying the error message in the content area. Test this error handling code by changing the script to request does-not-exist.html rather than exercises-content.html.
jQuery(document).ready(function ($) {
$.get('does-not-exist.html', function (data) {
$('#dictionary').append(data);
}).error(function (jqxhr) {
$('#dictionary').html('<h2>an error occured: ' + jqxhr.status + '</h2>').append(jqxhr.responsetext);
});
});
4. Challenge: When the page loads, send a JSONP request to Twitter and retrieve a user's last five messages. Insert the messages into the content area of the page. The URL to retrieve the last five messages of user kswedberg is: http://twitter.com/statuses/user_timeline/kswedberg.json?count=5.
jQuery(document).ready(function ($) {
// with help from http://wpcanyon.com/tipsandtricks/2-different-ways-for-getting-twitter-status-php-and-jquery/
var url = 'http://twitter.com/statuses/user_timeline/jeremiahflaga.json';
$.getJSON(url + '?count=5&callback=?', function (data) {
var html = '';
$.each(data, function (entryIndex, entry) {
html += '<h3 class="entry">' + entry.text + '</h3>';
});
$('#dictionary').html(html);
});
});
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ReplyDeleteRE: Question #2
ReplyDeleteHey Jeremiah, it took me a while before I gave up and came here to check your solution. Very lean, cool implementation!
At first, I was attempting to actually change the title attribute of each 'a' tag to match its corresponding 'div' in the other HTML file; that was my interpretation of the directions. After studying and testing your solution, I wondered how I might go about doing what I originally wanted to do, and I came around to the solution below:
$(document).ready(function(){
// Question 2
var myData = '';
$.ajax({
url: 'exercises-content.html',
success: function(data){
myData = data;
}
});
$('div[id^="letter-"] a').each(function(){
var id = $(this).closest('div').attr('id');
var myTitle = $(myData).filter('div#'+id).text();
$(this).attr('title',myTitle.trim());
});
});