I wanted to move to TypeScript from traditional JS because I like the C#-like syntax. My problem is that I can’t find out how to declare static classes in TypeScript. In C#, I often use static classes to organize variables and methods, putting them together in a named class, without needing to instatiate an object. In vanilla JS, I used
What’s the difference between deferred scripts and scripts placed at the end of the page body?
HTML5 introduced the defer attribute for scripts whose loading can be deferred in a HTML page. defer may be used for any scripts that don’t need to be loaded before the DOM (a.k.a don’t mess with the DOM before it is ready). For a long time web developers have been advised to put all scripts that don’t need to be
Javascript Validation for a phone number (Numbers, spaces, dots, hyphens)
So I have this validation for alphanumeric’s (/^[A-Za-z0-9,+-]+$/) however I want a validation for a phone number which only allows Numbers, Spaces, Dots and Hyphens. What code would I use to check for those. Thanks Ben Answer According to my specifications its just Numbers, Spaces, Dots and Hyphens only. Thats any order and any length That would be:
javascript mouse events
Is there a way in javascript to make it so that an “onclick” works for all members of a particular class? So if I have objects A and B that are both of type X, clicking on either of them will call the same function? But that function should only work on whichever of A or B was called, not
Set attribute without value
How do I set a data attribute without adding a value in jQuery? I want this: I tried: Everything else seems to add the second arguments as a string. Is it possible to just set an attribute without value? Answer The attr() function is also a setter function. You can just pass it an empty string. An empty string will
Dynamic textbox creation with db using ajax/javascript/php
I have two tables. company_details and company_specials. Each company_details can have multiple specials. I display the company details at http://eurothermwindows.com/ed/admin.php The first row and fourth row that has the 0 in the active column is from company_details and the rows below are from company_specials. Currently the code allows for dynamic modification of the company_details rows as denoted by the compid
How to remove elements that were fetched using querySelectorAll?
This seems like something that would have a quick answer, but I can’t find one. Maybe I’m searching the wrong terms? No libraries please, though I don’t need cross-browser fallbacks, I’m targeting all the latest versions on this project. I’m getting some elements: This is working, but how do I now delete these elements? Do I have to loop through
How long is data in localStorage kept?
In JavaScript you have the object localStorage. How long this object will be active for? How long is the the data in it kept for? Answer The most correct answer to this question is: You don’t know. The user could wipe his/her local data at any time, and any type of local storage is subject to user preferences and to
Set window.location with TypeScript
I am getting an error with the following TypeScript code: I am getting an underlined red error for the following: The message says: Does anyone know what this means? Answer window.location is of type Location while .attr(‘data-href’) returns a string, so you have to assign it to window.location.href which is of string type too. For that replace your following line:
localStorage – use getItem/setItem functions or access object directly?
Are there some benefits of using the methods defined on the localStorage object versus accessing the object properties directly? For example, instead of: I have been doing this: Is there anything wrong with this? Answer Not really, they are, basically, exactly the same. One uses encapsulation (getter/setter) to better protect the data and for simple usage. You’re supposed to use