CODEWITHSUNDEEP
jquerycss-selectors
davebowker
davebowker

Reputation: 4515

addClass every nth

I have a list of elements that I want to style in 3 different ways.

I want every 3rd list item to have the same class throughout the whole list.

For example:

<li class="A">Some Content</li>
<li class="B">Some Content</li>
<li class="C">Some Content</li>
<li class="A">Some Content</li>
<li class="B">Some Content</li>
<li class="C">Some Content</li>
<li class="A">Some Content</li>
<li class="B">Some Content</li>
<li class="C">Some Content</li>

I can do 2 with :odd/even, but how to do it with 3?

Upvotes: 16

Views: 25044

Answers (2)

VoteyDisciple
VoteyDisciple

Reputation: 37813

I recommend something like this:

let i = 0;
$("li").each(function() {
    i++;
    let newClass = 'A';
    if (i % 3 == 1) { newClass = 'B'; }
    if (i % 3 == 2) { newClass = 'C'; }
    $(this).addClass(newClass);
});

Upvotes: 2

Marc
Marc

Reputation: 9354

try 

$("ul li:nth-child(3n+1)").addClass("A")
$("ul li:nth-child(3n+2)").addClass("B")
$("ul li:nth-child(3n)").addClass("C")

Feel free to consolidate it to make it prettier, but I wanted to expose the selectors.

Upvotes: 45

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