<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="//code.jquery.com/jquery-2.1.1.min.js"></script>
<script src="//canjs.com/release/2.2.6/can.jquery.js"></script>
<script src="//canjs.com/release/2.2.6/can.map.define.js"></script>
<script src="//canjs.com/release/2.2.6/can.stache.js"></script>
<script src="//canjs.com/release/2.2.6/can.fixture.js"></script>
<script src="http://code.jquery.com/qunit/qunit-1.18.0.js"></script>
<script>
var Person = function(name){
this.name = name;
}
Person.prototype.species = 'Homo Sapien';
Person.prototype.speak =function(toWhom) {
return 'Hello ' + toWhom + '. My name is ' + this.name + '.';
}
module('new, dot, and dotcall');
test('NEW', function(){
var person = NEW(Person, ['Alexis']);
equal(person.name, 'Alexis', 'new function called');
var greet = 'Hello Justin. My name is Alexis.';
equal(person.speak('Justin'), greet, 'method on prototype called');
});
test('INSTANCEOF', function() {
var person = new Person('Alexis');
ok(INSTANCEOF(person, Person), 'person is an instanceof Person');
ok(INSTANCEOF(person, Object), 'person is an instanceof Object');
equal(INSTANCEOF(person, Array), false, 'person is not an instanceof Array');
});
</script>
</body>
</html>
/*
Write the new operator as if it was implemented in JS.
var Person = function(name) {
this.name = name;
}
Person.prototype.speak = function(){ console.log(‘Hello!’) }
var person = NEW( Person, ['name'] );
// var person = new Person(‘name’)
person.speak();
Example:
var justin = new Person('Justin');
var alexis = NEW(Person, ['Alexis']);
justin.speak(); //Justin
alexis.speak(); //Alexis
Hints:
NEW takes the constructor function and an array of arguments
*/
NEW = function(constructor, args) {
//create a new object: {}
//set proto of our object, to the prototype of the constructor
//call constructor with our object as the context
//return our new object
};
/*
Write the instanceof operator as if it was implemented in JS.
var Person = function(name) {
this.name = name;
}
person = new Person( 'Alexis' );
INSTANCEOF( person, Person );
Hints:
Check the proto chain for the constructor’s prototype.
var Person = function(name) {
this.name = name;
};
var person = new Person('Justin');
person instanceof Person; //true
INSTANCEOF(person, Person); //true
person instanceof Object; //true
INSTANCEOF(person, Object); //true
person instanceof Array; //false
INSTANCEOF(person, Array); //false
*/
INSTANCEOF = function(obj, constructor) {
//walk up obj's proto chain until
//the prototype of our constructor is found
};
Output
You can jump to the latest bin by adding /latest
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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. |