Assuming that FORM contains INPUT, have the following listeners: JavaScript Desired order of firing Nature of problem and attempted solutions Own code at FORM level, formFirst, formLast and middle, but have no access to INPUT code, inputFirst and inputLast – although could add own listeners on the INPUT…
Actual key assigned to JavaScript keyCode
I have setup an event listener: When the user presses 2 along with shift, how do I know if I should output (@) or (“)? Each users’ character mapping is different per locale. Answer Use the keypress event instead. It will reliably (barring a few edge cases) detect the character typed. There are a f…
How to get subarray from array?
I have var ar = [1, 2, 3, 4, 5] and want some function getSubarray(array, fromIndex, toIndex), that result of call getSubarray(ar, 1, 3) is new array [2, 3, 4]. Answer Take a look at Array.slice(begin, end)
.setAttribute(“disabled”, false); changes editable attribute to false
I want to have textboxes related to radiobuttons. Therefore each radio button should enable it’s textbox and disable the others. However when I set the disabled attribute of textbox to true, it changes the editable attribute too. I tried setting editable attribute true again but it did not work. This wa…
How do I get the information from a meta tag with JavaScript?
The information I need is in a meta tag. How can I access the “content” data of the meta tag when property=”video”? HTML: Answer You can use this:
jQuery: How to calculate the maximal attribute value of all matched elements?
Consider the following HTML: How would you find the maximal x value of all .a elements ? Assume that all x values are positive integers. Answer Just loop over them:
Detecting if code is being run as a Chrome Extension
I am working with some code that needs to be run as a page, and if it’s being run as a Chrome Extension, I want to be able to do additional things. What I’m using is: This seems like a good capability detection. Using user agent string causes me trouble because it’s the same no matter the co…
How to change date format (MM/DD/YY) to (YYYY-MM-DD) in date picker
I have following datepicker script: Now dateformat is MM/DD/YY .how to change the date format to YYYY-MM-DD? Answer Use the dateFormat option Demo at http://jsfiddle.net/gaby/WArtA/
html5, what is isContentEditable?
chrome supports the isContentEditable property (lists it in the “Inspect Element”), but reports false for INPUT, FORM – actually, everything. too me, for example, seems that INPUT, non-readonly, should be true. does anybody know what’s going on? Answer isContentEditable doesn’t h…
Why is event.ctrlKey returning undef?
I am calling a JavaScript function when an option is selected in a select element like so: The function does something like this: According to the alert, e.ctrlKey is undefined – I thought this was supposed to return either true or false? What am I missing here? Answer As per the standard, the attribute…