Why doesn't `ScrollIntoView` work on two simultaneous elements?

user_1428653 0
Viewed 1172

I have two overflowing elements on the page, I would like to call ScrollIntoView at the same time for child elements within both of them.

The following works in Firefox, but not Chrome. Is this a bug?

const button = document.querySelector('button');
const one = document.querySelector('.one');
const two = document.querySelector('.two');

button.addEventListener('click', () => {
    one.scrollIntoView({ block: 'center', behavior: 'smooth' });
    two.scrollIntoView({ block: 'center', behavior: 'smooth' });
});
body {
    text-align: center;
}

#container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    width: 100%;
    height: 130px;
}

#container > div {
    max-height: 200px;
    overflow-y: auto;
    border: 1px solid black;
}

button {
    font-size: 1.5rem;
    margin: 0.5rem auto;
}
<div id="container">
    <div>
        <h1>...</h1>
        <h1>...</h1>
        <h1>...</h1>
        <h1>...</h1>
        <h1>...</h1>
        <h1>...</h1>
        <h1>...</h1>
        <h1 class="one">Boo!</h1>
        <h1>...</h1>
        <h1>...</h1>
        <h1>...</h1>
        <h1>...</h1>
    </div>

    <div>
        <h1>...</h1>
        <h1>...</h1>
        <h1>...</h1>
        <h1>...</h1>
        <h1>...</h1>
        <h1>...</h1>
        <h1>...</h1>
        <h1 class="two">Boo!</h1>
        <h1>...</h1>
        <h1>...</h1>
        <h1>...</h1>
        <h1>...</h1>
    </div>
</div>

<button>click to scroll</button>

google-chrome html javascript
2 Answers

Better use the normal scrollTo() scrolling method with smooth scroll.

I had to use a for {}, since I was referring to a collection of scrollable divs inside #container:

const container_div = document.querySelectorAll("#container > div");

Also, I have specified the same class for both <h1> control tags:

const text = document.querySelectorAll(".boo");


const button = document.querySelector("button");
const container_div = document.querySelectorAll("#container > div");
const text = document.querySelectorAll(".boo");

button.addEventListener("click", () => {
    for (i = 0; i < container_div.length; i++) {
        container_div[i].scrollTo({ top: text[i].offsetTop, behavior: "smooth" });
    }
});
body {
    text-align: center;
}

#container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    width: 100%;
    height: 130px;
}

#container > div {
    max-height: 200px;
    overflow-y: auto;
    border: 1px solid black;
}

button {
    font-size: 1.5rem;
    margin: 0.5rem auto;
}
<div id="container">
    <div>
        <h1>...</h1>
        <h1>...</h1>
        <h1>...</h1>
        <h1>...</h1>
        <h1>...</h1>
        <h1>...</h1>
        <h1>...</h1>
        <h1 class="boo">Boo!</h1>
        <h1>...</h1>
        <h1>...</h1>
        <h1>...</h1>
        <h1>...</h1>
    </div>

    <div>
        <h1>...</h1>
        <h1>...</h1>
        <h1>...</h1>
        <h1>...</h1>
        <h1>...</h1>
        <h1>...</h1>
        <h1>...</h1>
        <h1 class="boo">Boo!</h1>
        <h1>...</h1>
        <h1>...</h1>
        <h1>...</h1>
        <h1>...</h1>
    </div>
</div>

<button>click to scroll</button>

user_135734440

Seems like Chrome blocks 2 smooths scrolls at the same time. Change behavior into auto and scroll will work.

user_57536470
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