In JavaScript, undefined means a variable has been declared but has not yet been assigned a value, such as: null is an assignment value. It can be assigned to a variable as a representation of no value: From the preceding examples, it is clear that undefined and null are two distinct types: undefined is a type itself (undefined) while null is an object. and
I have been unable to reproduce the problem. Contrary to the OP’s findings, the line below works fine on the latest versions of IE, FF, Opera, Chrome and Safari. You can visit this jsFiddle to test on your own browser: http://jsfiddle.net/6MjgB/7/ Assuning we have this in the html page: The following code works fine on … Read more
You don’t need the date validator. It doesn’t support dd/mm/yyyy format, and that’s why you are getting “Please enter a valid date” message for input like 13/01/2014. You already have the dateITA validator, which uses dd/mm/yyyy format as you need. Just like the date validator, your code for dateGreaterThan and dateLessThan calls new Date for … Read more
As simple as possible: With the ES6 syntax: You can also decrease the complexity of the algorithm from O(n) to O(sqrt(n)) if you run the loop until square root of a number:
Here your TypeScript has compiled happily, to code that will work in a requireJS environment (technically, an AMD environment). That means it generates output that assumes that define/require etc all already exist. The overall answer is that you need to include RequireJS before you depend on your compiled code. Notably the error suggests you’ve made … Read more
Javascript objects are excellent for this purpose, since they are essentially key/value stores:
I’d like to see integers, positive or negative, in binary. Rather like this question, but for JavaScript.
You are trying to find an element with tagname qwerty in the dom like <qwerty>sometext</qwerty> and append it to #content. To append the string qwerty to #content use Demo: Fiddle
You could sort the array and then run through it and then see if the next (or previous) index is the same as the current. Assuming your sort algorithm is good, this should be less than O(n2): Expand snippet In case, if you are to return as a function for duplicates. This is for similar … Read more