I have the following code: And the following script: In this case when the page is ready, the second tab will be activated but I always get a JavaScript error in the line $(‘.tab-pane a[href=”#’ + tab + ‘”]’).tab(); Can anyone help me, please? Answer Applying a selector from the .nav-tabs seems to be working: See this demo. I would
Get image width and height from the Base64 code in JavaScript
I have a Base64 image encoded that you can find here. How can I get the height and the width of it? Answer
How to use chrome.alarms for Google Chrome extension
manifest.json I trying to create a function to make a popup “great” every minute like this: Could someone please tell why is it not triggering that alert. I check the console, no error was displayed. Answer Here is the simplest working example I can think of, warning it is very annoying as when the alarm is on it alerts “Beep”
Remove last comma (and possible whitespaces after the last comma) from the end of a string
Using JavaScript, how can I remove the last comma, but only if the comma is the last character or if there is only white space after the comma? This is my code. I got a working fiddle. But it has a bug. Answer This will remove the last comma and any whitespace after it: It uses a regular expression: The
RSA Encryption Javascript
Can anyone please help me with this – I have been instructed to write an application that takes some data then encrypts it with an RSA public key. It apparently needs to be “RSA encryption” (I have never heard or seen this before?) Which encryption cipher is RSA meant to use as standard? Answer Never mind found the answer myself!
Appending a DOM element twice (jQuery)
Can someone explain why the following snippet does not add <foo> to both #a and #b? HTML: JS: jsfiddle Edit: thanks for the helpful points, the fact that .append() moves the element explains this behavior. Since the element in my application is actually a Backbone View’s .el, I prefer not to clone it. Answer Because using append actually moves the
Having trouble getting bound events to fire
I have included the below code in the header of my page: I have tested it by putting my mouse into the text field with this ID and removing it, clicking outside of it but nothing fires. I checked the error console and there is nothing, so it looks like it’s not even attempting to fire it. http://jsfiddle.net/kRaJy/ What am
Alert box shows form data when clicking button
I am looking to create a button at the bottom of a form that will create an alert box that will show the form data entered. Form includes: First Name Last Name Address 1 Address 2 City State Zip Phone Fax Once the form is completed, the button is clicked and an alert box pops up showing the form data
Insert value to input / JavaScript
I have the following JS / HTML code: I want that after I upload file, the file-name will shown in the tput text, but this cide doesn’t work. How can I fix it? Update : The file name should be inside the input text Answer Move your script element before the input element. You had better put the script element
JavaScript: How to turn a dictionary into a list of elements?
What is the most elegant way to turn this: into this: Answer Just iterate through the keys: Fiddle (updated per @Jack’s comment, only add direct properties)