# How do you calculate nth child?

## How do you calculate nth child?

formula (an + b) In addition to the value n being able to be any number, you can also use a formula. nth-child(3n) would affect every third child element. nth-child(3n+1) would apply to every third element starting from the first one.

## What does nth child mean?

The :nth-child selector allows you to select one or more elements based on their source order, according to a formula.

What is nth type?

The :nth-of-type selector allows you select one or more elements based on their source order, according to a formula. It is defined in the CSS Selectors Level 3 spec as a “structural pseudo-class”, meaning it is used to style content based on its relationship with parent and sibling elements.

What is difference between nth child and nth-of-type?

As a general rule, if you want to select an interval of a selector regardless of the type of element it is, use nth-child . However, if you want to select a specific type only and apply an interval selection from there, use nth-of-type .

### Can I use Nth child with class?

CSS :nth-child Pseudo-Class You can apply styles to a specific element based on its position or multiple elements. A common :nth-child rule is to color every element at an odd or even position in the list. nth-child is the selector used to match an element. 2 is the formula used to match an element using nth-child.

### What is nth child in jQuery?

jQuery | :nth-child() Selector jQuery :nth-child() Selector Selects all elements that are the nth-child of their parent. even: even number of child elements get selected. odd: odd number of child elements will get selected. equation: select child elements by solving a formula(an+b).

How do you use the nth of type?

CSS :nth-of-type() Selector

1. Specify a background color for every

element that is the second p element of its parent: p:nth-of-type(2) {

2. Odd and even are keywords that can be used to match child elements whose index is odd or even (the index of the first child is 1).
3. Using a formula (an + b).

How do you write nth child in sass?

For example, you can select the first three children of a parent by using the selector :nth-child(-n + 3) . You can use :nth-last-child(-n + 3) to select the last three. Let’s take a look an unordered list for an example. Similarly, you can use :nth-last-child(n + 4) to select all children except the last three.

#### Is first child CSS?

The first-child is a pseudo class in CSS which represents the first element among a group of sibling elements. The :first-child Selector is used to target the first child element of it’s parent for styling.

#### What’s the difference between nth last child and nth first child?

The only difference between it and :nth-last-child is that the latter iterates through elements starting from the bottom of the source order. The syntax for selecting the first n number of elements is a bit counter-intuitive. You start with -n, plus the positive number of elements you want to select.

What does nth-child ( 5N ) mean in CSS?

:nth-child (5n) Represents elements 5 [=5×1], 10 [=5×2], 15 [=5×3], etc. The first one to be returned as a result of the formula is 0 [=5×0], resulting in a no-match, since the elements are indexed from 1, whereas n starts from 0.

Why does nth child select the 10th element?

Selects the 10th because we have 10 elements here, but if there was 8 it would select the 8th, or if there were 1,290 it would select the 1,290th. Selects the 9th because we have 10 elements here, but if there were 30 elements it would select the 29th. Wanna play? Try the tester.

## How does nth child work in JavaScript?

If an integer is specified only one element is selected—but the keywords or a formula will iterate through all the children of the parent element and select matching elements — similar to navigating items in a JavaScript array. Keywords “even” and “odd” are straightforward (2, 4, 6, etc. or 1, 3, 5 respectively).