Posts tagged with javascript:

Meaning of Default, Preset, Fallback, Callback, Rollback value - differenceWhat is the meaning of Default value, Preset value, Fallback value, Callback value and Rollback value in software development ?

Javascript alert popup with two buttons OK / Cancel or Yes / NoHow can I add another button to javascript alert popup window, to have two buttons with values OK / Cancel or Yes / No ?

Set cookies to expire in hours, minutes, seconds - JavascriptI am using a javascript function, that allows to set after how many days cookies should expire: var date=new Date(); var expirydays=30;...

Keyup, Change, Blur - multiple jQuery events for same functionI need to call the function when user is typing into input field, but also when he changed the value without typing it, for example with copy and paste. How should I modify...

How to get text with preg_match and Regex in Javascript ?I need to extract text value like I usually do with preg_match() in PHP. But now I need to do it in Javascript. Can you please give me advice and example how to make it work...

Javascript function in link href="" - prevent from redirectingI have a javascript function in HTML link HREF="" attribute. When I click on the link, it will rediect me on another page. What should I do to avoid the redirecting.

JavaScript, JSON and jQuery - differenceWhat is the difference between JavaScript, JSON and jQuery ? Are JSON and jQuery based on JavaScript ?

Events onKeyPress, onKeyUp, onKeyDown, onChange - differenceWhat is the difference between Javascript events onKeyPress, onKeyUp, onKeyDown and onChange ? Can you please give an example, what each of them do and when it should be used...

Check if document getElementById or getElementsByName existsHow can I check if input field or other element exists by using document.getElementById or document.getElementsByName, before trying to get values ?

How to add new line breaks in textarea using Javascript ?Would you please give me advice how to dynamically insert a new lines in textarea ? I tried to add <br /> and later \n but it doesn't work.