Latest questions in Java

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What is TypeScript and why would I use it in place of JavaScript?

Could you kindly explain the TypeScript language? What ...READ MORE

Nov 16, 2022 in Java by Nicholas
• 7,760 points
600 views
0 votes
0 answers

map function for objects (instead of arrays)

I have an object: myObject = { 'a': ...READ MORE

Nov 16, 2022 in Java by Nicholas
• 7,760 points

edited Mar 4 123 views
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Why doesn't importing java.util.* include Arrays and Lists?

I am using java on debian 5 java ...READ MORE

Nov 16, 2022 in Java by Ashwini
• 5,430 points
1,077 views
0 votes
0 answers

Arrays.fill with multidimensional array in Java

Without using a loop, how can I ...READ MORE

Nov 16, 2022 in Java by Ashwini
• 5,430 points
919 views
0 votes
0 answers

What is the difference between contiguous and non-contiguous arrays?

In the numpy manual about the reshape() function, it ...READ MORE

Nov 16, 2022 in Java by Ashwini
• 5,430 points
1,104 views
0 votes
0 answers

How do JavaScript closures work?

How would you explain JavaScript closures to ...READ MORE

Nov 15, 2022 in Java by Nicholas
• 7,760 points
886 views
0 votes
0 answers

Download File Using JavaScript/jQuery

I have a similar requirement listed here. When ...READ MORE

Nov 15, 2022 in Java by Nicholas
• 7,760 points
610 views
0 votes
0 answers

Javascript counting number of objects in object

I have an object something like: Object {0=Object, ...READ MORE

Nov 15, 2022 in Java by Nicholas
• 7,760 points
794 views
0 votes
0 answers

How to validate password using following conditions?

Password should contain At least one uppercase letter At ...READ MORE

Nov 15, 2022 in Java by Nicholas
• 7,760 points
518 views
0 votes
0 answers

How to create an array containing 1...N

I'm looking for alternatives to the following for creating a JavaScript array with values ranging from 1 to N, where N is only known at  runtime. var foo = []; for (var i = ...READ MORE

Nov 15, 2022 in Java by Nicholas
• 7,760 points
716 views
0 votes
1 answer

Check if a variable is a string in JavaScript

This is what I've found to be ...READ MORE

Nov 15, 2022 in Java by Damonlang
• 1,230 points
673 views
0 votes
1 answer

Calculate string value in javascript, not using eval

You could use the Function() constructor: function evil(fn) ...READ MORE

Nov 15, 2022 in Java by Damonlang
• 1,230 points
3,259 views
0 votes
1 answer

How to draw a circle in HTML5 Canvas using JavaScript?

Here's how to draw a circle in ...READ MORE

Nov 15, 2022 in Java by Damonlang
• 1,230 points
1,248 views
0 votes
1 answer

Check if input is number or letter javascript

The isNaN function can be used to ...READ MORE

Nov 15, 2022 in Java by Damonlang
• 1,230 points
1,795 views
0 votes
1 answer

Violation Long running JavaScript task took xx ms

These messages are classified as warnings rather ...READ MORE

Nov 15, 2022 in Java by Damonlang
• 1,230 points
5,572 views
0 votes
0 answers

What is "callback hell" and how and why does RX solve it?

Can someone provide a precise description and ...READ MORE

Nov 9, 2022 in Java by Nicholas
• 7,760 points
828 views
0 votes
0 answers

Why were Javascript `atob()` and `btoa()` named like that?

A base64 string and window are both ...READ MORE

Nov 9, 2022 in Java by Nicholas
• 7,760 points
911 views
0 votes
0 answers

What is the difference between ( for... in ) and ( for... of ) statements?

I'm familiar with a for... in loop (it iterates over the keys), but this is the first I've heard of a for... of loop (it iterates over values). I don't understand the for...of loop. var arr = [3, 5, 7]; arr.foo ...READ MORE

Nov 9, 2022 in Java by Nicholas
• 7,760 points
510 views
0 votes
0 answers

How do you use the ? : (conditional) operator in JavaScript?

In simple words, what is the ?: ...READ MORE

Nov 9, 2022 in Java by Nicholas
• 7,760 points
852 views
0 votes
0 answers

How to round to at most 2 decimal places, if necessary

I'd like to round at most two ...READ MORE

Nov 9, 2022 in Java by Nicholas
• 7,760 points
867 views
0 votes
0 answers

What is the "debounce" function in JavaScript?

The JavaScript "debouncing" feature piques my attention. Unfortunately, the code is not presented in a way that I can comprehend.  How does it function (my comments are below)? I just do not understand how this works, to put it briefly. // Returns a function, ...READ MORE

Nov 8, 2022 in Java by Nicholas
• 7,760 points
525 views
0 votes
0 answers

javascript Image tag

I'm adding an image snapshot of a ...READ MORE

Nov 8, 2022 in Java by Nicholas
• 7,760 points
645 views
0 votes
0 answers

Difference between Relative path and absolute path in javascript

Have small clarifications, As of my knowledge, these ...READ MORE

Nov 8, 2022 in Java by Nicholas
• 7,760 points
720 views
0 votes
0 answers

What's the best way to convert a number to a string in JavaScript?

What method is the "best" for convert ...READ MORE

Nov 8, 2022 in Java by Nicholas
• 7,760 points
629 views
0 votes
0 answers

How can I get query string values in JavaScript?

Is there a method to retrieve query ...READ MORE

Nov 8, 2022 in Java by Nicholas
• 7,760 points
541 views
0 votes
1 answer

How to send an email from JavaScript

Javascript does not natively support email sending. However, you may access the user's mail client: window.open('mailto:test@example.com'); There are also some parameters to pre-fill ...READ MORE

Nov 8, 2022 in Java by Damonlang
• 700 points
1,030 views
0 votes
1 answer

What is location.search in javascript

http://example.com/index.php?foo=bar location.search > ?foo=bar ...READ MORE

Nov 8, 2022 in Java by Damonlang
• 700 points
678 views
0 votes
1 answer

Why firefox is written in C++ and javascript UI?

First off, Java and JavaScript are entirely ...READ MORE

Nov 8, 2022 in Java by Damonlang
• 700 points
1,125 views
0 votes
1 answer

Vanilla JavaScript equivalent of jQuery's $.ready() - how to call a function when the page/DOM is ready for it

Use Internet Explorer 9 or later if you're using VANILLA pure JavaScript without jQuery. document.addEventListener("DOMContentLoaded", function(event) { // ...READ MORE

Nov 8, 2022 in Java by Damonlang
• 700 points
3,779 views
0 votes
1 answer

javascript filter array multiple conditions

You can do like this var filter = ...READ MORE

Nov 8, 2022 in Java by Damonlang
• 700 points
3,661 views
0 votes
1 answer

How to trigger a file download when clicking an HTML button or JavaScript

You can trigger a download with the ...READ MORE

Nov 7, 2022 in Java by Damonlang
• 700 points
2,998 views
0 votes
1 answer

How to show console in jsfiddle

Normally by pressing F12 or using inspect ...READ MORE

Nov 7, 2022 in Java by Damonlang
• 700 points
1,013 views
0 votes
1 answer

Refresh a page using JavaScript or HTML

window.location.reload(); in JavaScript <meta http-equiv="refresh" content="1"> in HTML ...READ MORE

Nov 7, 2022 in Java by Damonlang
• 700 points
931 views
0 votes
1 answer

Convert GMT to IST (India Standard Time) using javascript?

You can specify an IANA time zone ...READ MORE

Nov 7, 2022 in Java by Damonlang
• 700 points
22,811 views
0 votes
1 answer

How to filter an array from all elements of another array

This is what I would do: var arr1 = [1,2,3,4], ...READ MORE

Nov 7, 2022 in Java by Damonlang
• 700 points
4,745 views
0 votes
1 answer

How to get current formatted date dd/mm/yyyy in Javascript and append it to an input

The stringent equality operator (===) works exactly like the abstract equality operator (==), with the exception that no type conversion is performed, and the types must be the same to be regarded equal. Javascript Tutorial on Comparison Operators After performing any required type transformations, the == operator will check for equality.  Because the === operator does not perform the conversion, it will simply return false if two values are not of the same type.  Both are equally fast. "abc" == new String("abc") ...READ MORE

Nov 4, 2022 in Java by Damonlang
• 700 points
1,810 views
0 votes
1 answer

What does the function then() mean in JavaScript?

The then() method is similar to "Javascript ...READ MORE

Nov 4, 2022 in Java by Damonlang
• 700 points
1,103 views
0 votes
1 answer

Which equals operator (== vs ===) should be used in JavaScript comparisons?

I hope this is what you're looking for: const today = new Date(); const yyyy = ...READ MORE

Nov 4, 2022 in Java by Damonlang
• 700 points
696 views
0 votes
1 answer

Base64 encoding and decoding in client-side Javascript

Some browsers, including Firefox, Chrome, Safari, Opera, ...READ MORE

Nov 4, 2022 in Java by Damonlang
• 700 points
1,253 views
0 votes
1 answer

How to decode jwt token in javascript without using a library?

Working unicode text JWT parser function: function parseJwt ...READ MORE

Nov 4, 2022 in Java by Damonlang
• 700 points
8,419 views
0 votes
0 answers

prefix -g is not recognized as an internal or external command, operable program or batch file.

'CALL "C:\Program Files\nodejs\\node.exe" "C:\Program Files\nodejs\\node_modules\npm\bin\npm-cli.js" prefix -g' ...READ MORE

Oct 28, 2022 in Java by Pavan

edited Mar 4 180 views
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0 answers

What 'type' of Language is JavaScript?

The structure of programming languages is frequently ...READ MORE

Sep 28, 2022 in Java by Nicholas
• 7,760 points
1,049 views
0 votes
0 answers

What is the difference between "let" and "var"?

Although I've heard that it's referred to ...READ MORE

Sep 28, 2022 in Java by Nicholas
• 7,760 points
860 views
0 votes
0 answers

How to convert decimal to hexadecimal in JavaScript

In JavaScript, how do you translate decimal ...READ MORE

Sep 28, 2022 in Java by Nicholas
• 7,760 points
809 views
0 votes
0 answers

Generating random whole numbers in JavaScript in a specific range

How can I create random whole numbers ...READ MORE

Sep 28, 2022 in Java by Nicholas
• 7,760 points
861 views
0 votes
0 answers

Generating PDF files with JavaScript

I was hoped that I could accomplish ...READ MORE

Sep 28, 2022 in Java by Nicholas
• 7,760 points
642 views
0 votes
0 answers

What does document.forms mean in javascript?

What do the terms document.cookie, document.forms, and.value ...READ MORE

Sep 28, 2022 in Java by Nicholas
• 7,760 points
1,013 views
0 votes
0 answers

Generate random number between two numbers in JavaScript

Is it possible to use JavaScript to ...READ MORE

Sep 28, 2022 in Java by Nicholas
• 7,760 points
1,108 views
0 votes
0 answers

send images on whatsapp web with javascript DOM

I currently have the script that delivers ...READ MORE

Sep 28, 2022 in Java by Nicholas
• 7,760 points
2,098 views