I want to show an alert message if the user type more than 1000 characters or copy past more than 1000 characters. For that, I am using following JS code but somehow it’s not working. HTML code: JS code: What am I doing wrong here? Answer Here’s a code from How can I bind to the change event of a
Tag: javascript
Why PHP strlen() and Javascript xxx.length is not equal?
I have following text: Ankylosaurus was an armored dinosaur that lived roughly 67 million years ago, at the very end of the Cretaceous Period. This genus was among the last of the non-avian dinosaurs, living alongside Tyrannosaurus, Triceratops, and Edmontosaurus. Its name means ‘fused lizard’; bo…
relative complement of A in B with functional programming
I have to retrieve the values that exist only on Array B, but do not exist on Array A. From my research, It is called: relative complement of A in B Values in the arrays may not be primitives.I need an efficient and functional apporach to this problem. I have found lodash _.without function, but it supports o…
Difference between classes and namespaces in TypeScript
What is exactly the difference between classes and namespaces in TypeScript? I know that if you create a class with static methods you can access them without instantiating the class and that is exactly one of the points of namespaces I guess. I also know that you can create more than one Namespace with the s…
Collision in canvas javascript game
I added collision to my game but I have a problem. But first I´ll give you some background. I have this: On update(); function I have this: That is used here: Note: wPlayer and hPlayer are the width and height of the player, as the animation is done through a spritesheet. xPlayer and yPlayer are the positions…
Rails5 : Select2 Gem not working
I am a Rails beginner and trying to use Select2 gem in Rails application and I see it not working as expected.It is shown as normal drop down only where i am expecting search option included in it. Can some one help me please. HTML Code Here is my application.js Gem file has the related gem Answer I don’…
TypeScript: concat arrays with different element-types
This is working. The fine result is But what I need is this – and thats not working. Error: It works if I make the numbers in tail to strings – what I can not do because of reasons. So how can I make it work?? Thanks! Answer You can declare the type of head like this: This will remove
Javascript map to Associative Array?
I have an array of objects like so: How can I create an associative array like so?: Can this be done with a map function? Answer Since you need just one object in the result, you could use array#reduce like this:
how to see changes in new data generated in a vue component?
Well I hope to explain, I’m generating this data from a component, when I click the checkbox changes in the generated data are not reflected, but when clicking the button with a data already in the instance changes are made, I appreciate if you explain Why or do they have a solution? this my code js htm…
jQuery loop append result after every event
I apply each loop in jQuery with onchange() event. So my problem is when I select option(“RAW”) it return result as option values and then I select “DEPTH” option and it add “RAW” and “DEPTH” return result and give both data as option. output – when I sele…