<html>
<head>
<title>JS Bin</title>
<link href="http://code.jquery.com/qunit/qunit-1.18.0.css" rel="stylesheet"/>
</head>
<body>
<div id="qunit"></div>
<div id="qunit-fixture"></div>
<script src="http://code.jquery.com/qunit/qunit-1.18.0.js"></script>
<script>
module('$ find elements');
test('$.fn.find', function(){
var $ul = $('#qunit-fixture')
.html('<ul><li/><li/></ul><ul><li/><li/></ul>')
.find('ul');
equal($ul.length, 2, 'got 2 uls');
equal($ul.find('li').length, 4, 'got four lis');
});
test('$.fn.children', function(){
var $ul = $('#qunit-fixture')
.html('<ul><li/><li/></ul><ul><li/><li/></ul>')
.children();
equal($ul.length, 2, 'got 2 uls');
equal($ul.children().length, 4, 'got four lis');
});
test('$.fn.parent', function(){
var $lis = $('#qunit-fixture')
.html('<ul><li/><li/></ul><ul><li/><li/></ul>')
.find('li:first-child');
equal($lis.length, 2, 'got 2 uls');
equal($lis.parent().length, 2, 'got 2 lis');
});
test('$.fn.next', function(){
var $lis = $('#qunit-fixture')
.html('<ul> <li></li> <li></li> </ul> <ul> <li></li> <li></li> </ul>')
.find('li:first-child');
equal($lis.length, 2, 'got 2 lis');
equal($lis.next().length, 2, 'got 2 lis');
equal($lis.next().next().length, 0, 'got 0 lis');
});
test('$.fn.prev', function(){
var $lis = $('#qunit-fixture')
.html('<ul><li/><li/></ul><ul><li/><li/></ul>')
.find('li:last-child');
equal($lis.length, 2, 'got 2 uls');
equal($lis.prev().length, 2, 'got 2 lis');
equal($lis.prev().prev().length, 0, 'got 2 lis');
});
</script>
</body>
</html>
//This week we'll be filling in the following methods: $, $.prototype.html, $.prototype.val, $.prototype.text and $.prototype.find. The code from last week's session has also been added in lines 5-54.
$ = function(selector) {
if(!(this instanceof $)) {
return new $(selector);
}
var elements;
if(isArrayLike(selector)) {
elements = selector;
}
else {
elements = document.querySelectorAll(selector);
}
[].push.apply(this, elements);
};
$.extend = function(target, object) {
for (var prop in object) {
if (object.hasOwnProperty(prop)) {
target[prop] = object[prop];
}
}
return target;
};
var isArrayLike = function(obj) {
return obj && typeof obj === "object" && (obj.length === 0 || typeof obj.length === "number" && obj.length > 0 && obj.length - 1 in obj);
};
$.extend($, {
isArray: function(obj) {
return Object.prototype.toString.call(obj) === "[object Array]";
},
each: function(collection, cb) {
if (isArrayLike(collection)) {
for (var i = 0; i < collection.length; i++) {
cb.call(collection[i], i, collection[i]);
}
} else {
for (var prop in collection) {
cb.call(collection[prop], prop, collection[prop]);
}
}
return collection;
},
makeArray: function(arr) {
if ($.isArray(arr)) {
return arr;
}
var array = [];
$.each(arr, function(i, item) {
array[i] = item;
});
return array;
},
proxy: function(fn, context) {
return function() {
return fn.apply(context, arguments);
};
},
fn: $.prototype
});
$.extend($.prototype, {
html: function(newHtml) {
if(arguments.length > 0) {
return $.each(this, function() {
this.innerHTML = newHtml;
});
}
else {
return this[0].innerHTML;
}
},
val: function(newVal) {
if(arguments.length > 0) {
return $.each(this, function() {
this.value = newVal;
});
}
else {
return this[0].value;
}
},
text: function(newText) {
if(arguments.length > 0) {
return $.each(this, function() {
this.innerText = newText;
});
}
else {
return this[0].innerText;
}
},
find: function(selector) {
var elements = []
$.each(this, function() {
var els = this.querySelectorAll(selector);
if(els) {
[].push.apply(elements, els);
}
});
return $(elements);
},
next: function() {},
prev: function() {},
parent: function() {},
children: function() {}
});
Output
You can jump to the latest bin by adding /latest
to your URL
Keyboard Shortcuts
Shortcut | Action |
---|---|
ctrl + [num] | Toggle nth panel |
ctrl + 0 | Close focused panel |
ctrl + enter | Re-render output. If console visible: run JS in console |
Ctrl + l | Clear the console |
ctrl + / | Toggle comment on selected lines |
ctrl + ] | Indents selected lines |
ctrl + [ | Unindents selected lines |
tab | Code complete & Emmet expand |
ctrl + shift + L | Beautify code in active panel |
ctrl + s | Save & lock current Bin from further changes |
ctrl + shift + s | Open the share options |
ctrl + y | Archive Bin |
Complete list of JS Bin shortcuts |
JS Bin URLs
URL | Action |
---|---|
/ | Show the full rendered output. This content will update in real time as it's updated from the /edit url. |
/edit | Edit the current bin |
/watch | Follow a Code Casting session |
/embed | Create an embeddable version of the bin |
/latest | Load the very latest bin (/latest goes in place of the revision) |
/[username]/last | View the last edited bin for this user |
/[username]/last/edit | Edit the last edited bin for this user |
/[username]/last/watch | Follow the Code Casting session for the latest bin for this user |
/quiet | Remove analytics and edit button from rendered output |
.js | Load only the JavaScript for a bin |
.css | Load only the CSS for a bin |
Except for username prefixed urls, the url may start with http://jsbin.com/abc and the url fragments can be added to the url to view it differently. |