JavaScript Archives - Ian Carnaghan
Javascript: Creating a basic popup window
Javascript gives you the ability to open new windows in you’re browser. You’ll also have the ability to run...
How to redirect to a page using Javascript
window.location.href = 'redirect.html';
How to check if a value is a number or not a number using JavaScript
By using the isNaN() JavaScript function. isNaN = Is Not A Number Examples: document.write(isNaN(“Hello World!”)); //Will print true since Hello World! is not a number document.write(isNaN(123456)); //Will...
How to encode a URL in JavaScript
There are two JavaScript function that you can use to accomplish this encodeURIComponent() Encodes a URI component Encodes special...
How to refresh an IFrame using Javascript
var iframe = document.getElementById('iframe_id'); iframe.src = iframe.src; iframe_id is the ID of the IFrame
How to change the src (url) of a IFrame using JavaScript
document.getElementById('iframe_id').src = 'newpage.html iframe_id = The ID for the IFrame newpage.html = The page that you want to load into the IFrame
How to set a timer in JavasScript
If we want to call a function every 10 seconds using JavaScript we can accomplish it by implementing the...
How to disable and enable HTML form fields using JavaScript
To enable a form field use the below JavaScript document.getElementById("ELEMENT_ID").disabled = false; And to disable the form field use...
How to get the file extension from a filename using Javascript
var filename = 'myFile.jpg'; var ext = filename.split('.').pop(); //We split the filename on every instance where the . is...
