Category: JavaScript Answers

Sometimes, we want to convert a DOM node list to an array in JavaScript.

In this article, we’ll look at how to convert a DOM node list to an array in JavaScript.

How to convert a DOM node list to an array in JavaScript?

To convert a DOM node list to an array in JavaScript, we can use the spread operator or the Array.from method.

For instance, we write

const elements = [...nodeList];

or

const elements = Array.from(nodeList);

to use the spread operator or the Array.from method to convert the nodeList node list to an array.

Conclusion

To convert a DOM node list to an array in JavaScript, we can use the spread operator or the Array.from method.

Sometimes, we want to check if a query string value is present via JavaScript.

In this article, we’ll look at how to check if a query string value is present via JavaScript.

How to check if a query string value is present via JavaScript?

To check if a query string value is present via JavaScript, we can use the URLSearchParams constructor.

For instance, we write

const queryString = window.location.search;
const urlParams = new URLSearchParams(queryString);
const product = urlParams.get("product");

to get the query string from the current URL with window.location.search.

Then we pass queryString into the URLSearchParams constructor to create the urlParams object.

Finally, we get the value of the query parameter with key 'product' with urlParams.get.

Conclusion

To check if a query string value is present via JavaScript, we can use the URLSearchParams constructor.

Sometimes, we want to disable browsers vertical and horizontal scrollbars with JavaScript.

In this article, we’ll look at how to disable browsers vertical and horizontal scrollbars with JavaScript.

How to disable browsers vertical and horizontal scrollbars with JavaScript?

To disable browsers vertical and horizontal scrollbars with JavaScript, we can set the overflow style to 'hidden'.

For instance, we write

document.documentElement.style.overflow = "hidden";

to hide the scrollbars on the page by setting document.documentElement.style.overflow to 'hidden'.

We can restore the scrollbars with

document.documentElement.style.overflow = "auto";

Conclusion

To disable browsers vertical and horizontal scrollbars with JavaScript, we can set the overflow style to 'hidden'.

Sometimes, we want to add 0 to number if less than 10 in JavaScript.

In this article, we’ll look at how to add 0 to number if less than 10 in JavaScript.

How to add 0 to number if less than 10 in JavaScript?

To add 0 to number if less than 10 in JavaScript, we can call the string padStart method.

For instance, we write

const n1 = (1).toString().padStart(2, "0");
const n2 = (11).toString().padStart(2, "0");

to call padStart with 2 and '0' to prepend '0' to the number convert to a string if it has less than 2 characters.

Therefore, n1 is '01' and n2 is '11'.

Conclusion

To add 0 to number if less than 10 in JavaScript, we can call the string padStart method.

Sometimes, we want to add an onclick function to go to a URL in JavaScript.

In this article, we’ll look at how to add an onclick function to go to a URL in JavaScript.

How to add an onclick function to go to a URL in JavaScript?

To add an onclick function to go to a URL in JavaScript, we set window.location to the URL we want to go to on the onclick function.

For instance, we write

window.location = url;

to set window.location to url to navigate to the URL in the url string.

Conclusion

To add an onclick function to go to a URL in JavaScript, we set window.location to the URL we want to go to on the onclick function.