Unanswered questions in Java

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When to use promise.all()?

What is/are the appropriate scenario(s) for using promise.all() OR Is there a better way to utilize promise.all()?  Should it be used ideally just when all of the promise objects are of the same or comparable type? The only one that comes to mind is: Use promise.all() if you want to resolve the promise only if all of ...READ MORE

Dec 12, 2022 in Java by Nicholas
 • 7,760 points • 116 views
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How can I find the prime factors of an integer in JavaScript?

Using a for loop in javascript, I was attempting to determine the prime factors of a number, denoted as 'integer' below.  I can't seem to get it to work, and I'm not sure if it's because of my JavaScript or my calculating logic. //integer is the value for which we ...READ MORE

Dec 12, 2022 in Java by Nicholas
 • 7,760 points • 268 views
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Generate pdf from HTML in div using Javascript

I have the following HTML code: <!DOCTYPE html> <html> ...READ MORE

Dec 9, 2022 in Java by Nicholas
 • 7,760 points • 354 views
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Loop over an array in JavaScript

How can I use JavaScript to loop ...READ MORE

Dec 9, 2022 in Java by Nicholas
 • 7,760 points • 198 views
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How do I get the current time only in JavaScript

In JavaScript, how can I retrieve the ...READ MORE

Dec 9, 2022 in Java by Nicholas
 • 7,760 points • 168 views
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Which is better: <script type="text/javascript">...</script> or <script>...</script>

Which is more effective or convenient  ...READ MORE

Dec 9, 2022 in Java by Nicholas
 • 7,760 points • 103 views
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JavaScript: undefined !== undefined?

When I first tried to access Facebook API operations after integrating Facebook Connect with Tersus, I received the error messages Invalid Enumeration Value and Handler already exists. It was discovered that the source of the problem was object.x === undefined When there is no property 'x' in 'object,' returns false. I solved the problem by substituting normal equality for rigorous equality in two Facebook functions: FB.Sys.isUndefined = function(o) { return ...READ MORE

Dec 9, 2022 in Java by Nicholas
 • 7,760 points • 73 views
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Const in JavaScript: when to use it and is it necessary?

In JavaScript, I recently came across the ...READ MORE

Dec 8, 2022 in Java by Nicholas
 • 7,760 points • 69 views
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How to add days to Date?

How can I add days to the ...READ MORE

Dec 8, 2022 in Java by Nicholas
 • 7,760 points • 82 views
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How to stop timer in javascript?

I'd want to end a timer by clicking a button, but I can't figure out how.  I tried using clearInterval() to halt a timer, but I'm not sure whether it was called correctly. This is my current code. <html> <head> <title>Bootstrap</title> ...READ MORE

Dec 8, 2022 in Java by Nicholas
 • 7,760 points • 174 views
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Convert a number into a Roman numeral in JavaScript

What is the best way to convert integers to roman numerals? function romanNumeralGenerator (int) { } Consider the following sample inputs and outputs: 1 = "I" 5 = ...READ MORE

Dec 8, 2022 in Java by Nicholas
 • 7,760 points • 226 views
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How do I remove an object from an array with JavaScript?

I have a JavaScript object that looks ...READ MORE

Dec 8, 2022 in Java by Nicholas
 • 7,760 points • 89 views
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How to get the current London time and date using javascript

Using the code below, I attempted to& ...READ MORE

Dec 7, 2022 in Java by Nicholas
 • 7,760 points • 125 views
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How is a JavaScript hash map implemented?

I'm using OpenLayers right now and need ...READ MORE

Dec 7, 2022 in Java by Nicholas
 • 7,760 points • 78 views
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Check if a value is an object in JavaScript

How do you check if a value ...READ MORE

Dec 7, 2022 in Java by Nicholas
 • 7,760 points • 62 views
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How does the "this" keyword work, and when should it be used?

I'm trying to figure out what the&nbs ...READ MORE

Dec 7, 2022 in Java by Nicholas
 • 7,760 points • 83 views
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What is the meaning of polyfills in HTML5?

Actually, I have no idea what polyfills ...READ MORE

Dec 7, 2022 in Java by Nicholas
 • 7,760 points • 68 views
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Best place to insert JavaScript within a HTML document

Where should the javascript code go? ...READ MORE

Dec 6, 2022 in Java by Nicholas
 • 7,760 points • 56 views
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How do I link a JavaScript file to a HTML file?

How should a JavaScript file be linked ...READ MORE

Dec 6, 2022 in Java by Nicholas
 • 7,760 points • 70 views
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Javascript remove background color and opacity

How can I delete the background-color  ...READ MORE

Dec 6, 2022 in Java by Nicholas
 • 7,760 points • 401 views
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What is 'Currying'?

I've seen references to curried functions in ...READ MORE

Dec 6, 2022 in Java by Nicholas
 • 7,760 points • 55 views
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How to check if an object is a Promise?

Whether it's an ES6 Promise, a Bluebird ...READ MORE

Dec 6, 2022 in Java by Nicholas
 • 7,760 points • 106 views
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Javascript counting number of objects in object

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

Nov 17, 2022 in Java by Nicholas
 • 7,760 points • 172 views
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How to detect #enable-force-dark flag on Chrome v78+ using JavaScript?

I just developed and implemented a dark ...READ MORE

Nov 17, 2022 in Java by Nicholas
 • 7,760 points • 117 views
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What is the use of the JavaScript 'bind' method?

What is the use of bind() in ...READ MORE

Nov 17, 2022 in Java by Nicholas
 • 7,760 points • 118 views
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How to remove item from array by value?

Is it possible to delete an item ...READ MORE

Nov 17, 2022 in Java by Nicholas
 • 7,760 points • 102 views
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Generating Fibonacci Sequence

var x = 0; var y = 1; var ...READ MORE

Nov 17, 2022 in Java by Nicholas
 • 7,760 points • 119 views
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What is the meaning of "$" sign in JavaScript

A dollar ($) symbol appears in the ...READ MORE

Nov 16, 2022 in Java by Nicholas
 • 7,760 points • 86 views
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Can you control GIF animation with Javascript?

Is it feasible to use Javascript to ...READ MORE

Nov 16, 2022 in Java by Nicholas
 • 7,760 points • 283 views
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What is DOM Event delegation?

Can anyone please explain event delegation in ...READ MORE

Nov 16, 2022 in Java by Nicholas
 • 7,760 points • 84 views
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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 • 83 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
 • 3,590 points • 140 views
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Arrays.fill with multidimensional array in Java

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

Nov 16, 2022 in Java by Ashwini
 • 3,590 points • 183 views
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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
 • 3,590 points • 231 views
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How do JavaScript closures work?

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

Nov 15, 2022 in Java by Nicholas
 • 7,760 points • 91 views
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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 • 89 views
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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 • 126 views
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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 • 87 views
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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 • 107 views
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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 • 166 views
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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 • 180 views
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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 • 76 views
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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 • 110 views
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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 • 172 views
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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 • 74 views
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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 • 99 views
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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 • 177 views
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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 • 81 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 • 72 views
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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 • 117 views

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