incrementing the value of an element in a JavaScript array

Question

incrementing the value of an element in a JavaScript array

I'm having an issue with adding numbers to an array in JavaScript. I only want to add numbers that are multiples of three. Below is the code snippet:

var numbers = [];
for (i = 1; i <= 200; i++) {
    if i % 3 === 0 {    
        numbers.push(i);            
    }
}
alert(numbers);

Strangely, the code isn't displaying any output. However, when I remove the if statement and simply add all numbers between 1 and 200, it works fine...

Can you help me identify the error?

Appreciate your assistance!

javascript arrays

Answer 1

Answer №1

If you want a quick solution, you can use if (i % 3 === 0) {

However, a more efficient approach would be to use for (i = 3; i <= 200; i += 3) and eliminate the need for the modulus check.

Answer 2

If you want a quick solution, you can use if (i % 3 === 0) {

However, a more efficient approach would be to use for (i = 3; i <= 200; i += 3) and eliminate the need for the modulus check.

Answer 3

Answer №2

Make sure to include brackets in your if statement.

var numbers = [];
for (i = 1; i <= 200; i++) {
    if (i % 3 === 0) {    
    // ^           ^
        numbers.push(i);            
    }
}
console.log(numbers);

Answer 4

Make sure to include brackets in your if statement.

var numbers = [];
for (i = 1; i <= 200; i++) {
    if (i % 3 === 0) {    
    // ^           ^
        numbers.push(i);            
    }
}
console.log(numbers);

Answer 5

Answer №3

    var numbers = [];
    for (var j = 1; j <= 200;j++) {
        if (j % 3 == 0) {    // () parenthesis are required for execution
            numbers.push(j);            
        }
    }

    // a more efficient approach
    var numberSet = [];
    var j = 3; // declaring it here is optimal
    for (; j <= 200; j += 3) {
        //  if (j % 3 == 0) remove as Bathsheba's solution suggests
            numberSet.push(j);            
        //  }
    }

Answer 6

    var numbers = [];
    for (var j = 1; j <= 200;j++) {
        if (j % 3 == 0) {    // () parenthesis are required for execution
            numbers.push(j);            
        }
    }

    // a more efficient approach
    var numberSet = [];
    var j = 3; // declaring it here is optimal
    for (; j <= 200; j += 3) {
        //  if (j % 3 == 0) remove as Bathsheba's solution suggests
            numberSet.push(j);            
        //  }
    }

incrementing the value of an element in a JavaScript array

Answer №1

Answer №2

Answer №3

Similar questions

Ramda Transitioning to a Liberated Style of Programming

Retrieve an array of objects by matching a specific object id

Is it possible to have SVG animation triggered by scrolling?

Unlocking the Potential of NextJS with Dynamic Page Export - Say Goodbye to Static HTML!

What is the best method to retrieve the audio attributes of the currently playing song using the Spotify Web API?

What is the best approach to retain a user's selection for dark mode?

The Ajax script is malfunctioning

Passing properties to the App component in React

What are effective methods for testing HTML5 websites?

The challenges of $location.search().name and base href in application URLs

a hyperlink not functioning properly after the # symbol

Experiencing difficulties integrating relational data with Angular and MongoDB

Vue's bidirectional data binding presents a challenge when attempting to update the parent component from a child component

Steps for preventing a button from being enabled until all mandatory fields are completed

Arrange list items dynamically using ajax

Allow frontend JavaScript to retrieve a text file that is restricted to individual users

What could be causing the npm server error in my Vue.js application?

Ignore one specific file when importing all files in Angular 7

How can I replicate the function of closing a tab or instance in a web browser using Protractor/Selenium?

Positioning Firefox absolutely within a table-cell element is possible