javascript Archives - Page 249 of 258

How does JavaScript .prototype work?

I’m not that into dynamic programming languages but I’ve written my fair share of JavaScript code. I never really got my head around ...

April 10, 2022
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What is the scope of variables in JavaScript?

What is the scope of variables in javascript? Do they have the same scope inside as opposed to outside a function? Or does ...

April 10, 2022
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Get selected value in dropdown list using JavaScript

How do I get the selected value from a dropdown list using JavaScript? I tried the methods below, but they all return the ...

April 10, 2022
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JavaScript check if variable exists (is defined/initialized)

Which method of checking if a variable has been initialized is better/correct? (Assuming the variable could hold anything (string, int, object, function, etc.)) ...

April 10, 2022
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When should I use double or single quotes in JavaScript?

console.log("double"); vs. console.log('single'); I see more and more JavaScript libraries out there using single quotes when handling strings. What are the reasons to ...

April 10, 2022
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How to decide when to use Node.js?

Locked. This question and its answers are locked because the question is off-topic but has historical significance. It is not currently accepting new ...

April 10, 2022
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How do I empty an array in JavaScript?

This question’s answers are a community effort. Edit existing answers to improve this post. It is not currently accepting new answers or interactions. ...

April 10, 2022
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Generate random number between two numbers in JavaScript

Is there a way to generate a random number in a specified range with JavaScript ? For example: a specified range from 1 ...

April 10, 2022
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How to format numbers as currency strings

I would like to format a price in JavaScript. I’d like a function which takes a float as an argument and returns a ...

April 10, 2022
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Iterate through object properties

var obj = { name: "Simon", age: "20", clothing: { style: "simple", hipster: false } } for(var propt in obj){ console.log(propt + ': ...

April 10, 2022
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