JavaScript

Guides and tutorials relating to JavaScript and jQuery.

JavaScript: Add text to a canvas element.

This is a beginners tutorial on how to add text to a canvas element using JavaScript.

JQuery: Add a new row to a table.

This is a tutorial on how to add a new row to a table using the JQuery library.

JavaScript: Detect when checkbox is ticked / unticked.

This is a JavaScript tutorial on how to detect whenever a checkbox has been ticked or unticked.

Calculating the execution time of an AJAX request.

This is a short JavaScript tutorial on how to calculate the execution time of an AJAX request.

Comparing two dates in JavaScript.

This is a short and simple guide on how to compare two dates in JavaScript.

Detect HTTPS with JavaScript.

This is a short tutorial on how to detect HTTPS / SSL using JavaScript.

How to refresh a page using JavaScript.

This is a short guide on how to reload / refresh a page using JavaScript.

Populate SELECT options with Ajax.

This is a JavaScript tutorial on how to populate a SELECT element’s options with an Ajax request.

jQuery: Simple $.each example.

This is a short jQuery tutorial on how to use the $.each function.

Check if HTML element exists using JavaScript.

In this guide, I will show you how to check if a given HTML element exists using JavaScript.

Microsoft Edge CORS bug.

The other day, I stumbled across a CORS-related bug in Microsoft Edge.

Get file input size using JQuery.

In this guide, I will be showing you how to get the size of a selected input file using JQuery.

Getting a random value from a JavaScript array.

This is a short tutorial on how to get a random value from a JavaScript array. To do this, we will have to generate a random index number that represents an element in the array.

Fix: Tainted canvases may not be exported.

The other day, I came across a frustrating CORS-related error while developing a Facebook Instant Game. This is a short post on how I fixed it.

JavaScript: Add image to canvas.

This is a short guide on how to add an image to a canvas element using JavaScript.

JavaScript: Get textual day of week.

This is a short JavaScript guide on how to get the full textual representation of the day of the week.

JavaScript: Check if object property exists.

This is a short JavaScript tutorial on how to check if a given object property exists.

Check if a variable is a JavaScript object.

This is a short guide on how to check if a variable or value if an object using JavaScript.

Tutorial: Change a DIV’s text using JQuery.

This is a short tutorial on how to change the text of a DIV element using the JavaScript JQuery library.

Printing out JSON with PHP.

In this beginner’s tutorial, I will show you how to print out JSON using PHP and specify the correct Content-Type header.