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Tag Archives: JavaScript

JavaScript

JavaScript: ValueOf an Object?

October 30, 2016luciaJavaScript

Every object in JavaScript inherits a valueOf() method from Object.prototype. But when we say obj.valueOf(), what exactly do we mean, the value of an object?

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Standard
JavaScript

Difference: arr.join, arr.toString, arr.toLocaleString

October 28, 2016luciaJavaScript

There are multiple ways to churn out a string version of a variable. Take Arrays for example, there are 3: join, toString, toLocaleString.

But what’s the difference?

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Standard
JavaScript

Non-enumerable Properties

October 10, 2014luciaJavaScript

I was trying to figure out a way to enumerate through properties of Math object when I realise that I can’t access any. Whaaat? Why?

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Standard
JavaScript

Object.prototype.toString.call()?

September 19, 2014luciaJavaScript

This seems to be a standardised way to tell the type of a javascript object. Why?

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Standard
JavaScript

jQuery: Difference between bind, live and on

September 3, 2014luciaJavaScript, jQuery

Equivalent:

$('button').bind('click', fn);
$('button').on('click', fn);

Equivalent:

$('button').live('click', fn);
$(document.body).on('click', 'button', fn);
Standard
JavaScript

jQuery: keyup, keydown, keypress?

July 31, 2014luciaJavaScript, jQuery

In normal cases, go for keyup:

$(document).keyup(function(e){
  console.log(e.which);
});

Reasons:

  1. keydown keeps firing when user holds the keys down, while keypress and keyup fire only once.
  2. keypress doesn’t detect special keys (e.g. SHIFT), keydown and keyup do.
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Fun Projects, JavaScript

jquery-youtube: Youtube API Packup

July 25, 2014luciaCoffeeScript, JavaScript, YouTube API


[LINK]

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Standard
Fun Projects

Game 2048

April 16, 2014luciaCoffeeScript, Fun, Games, JavaScript, Playground, Three.js

Link: 2048

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Standard
JavaScript

Render Post Processing with Three.js

April 11, 2014luciaCoffeeScript, JavaScript, Three.js

Five steps:

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Standard
Rails

Requiring JavaScript & Stylesheets with Requirejs & Sprockets

March 30, 2014luciaAMD, JavaScript, Less, Rails, Requirejs, Sprockets Leave a comment

Demo for requiring JavaScript and Stylesheets in Ruby on Rails:

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