66 lines
1.5 KiB
HTML
66 lines
1.5 KiB
HTML
<!DOCTYPE html>
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<title>
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Adding a new snap area while already snapped should not make the scroller snap to it.
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</title>
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<link rel="help" href="https://drafts.csswg.org/css-scroll-snap/#re-snap" />
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<style>
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div {
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position: absolute;
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margin: 0;
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}
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#scroller {
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height: 500px;
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width: 500px;
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overflow: hidden;
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scroll-snap-type: both mandatory;
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}
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#initial-target {
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width: 300px;
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height: 300px;
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top: 100px;
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left: 100px;
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background-color: green;
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scroll-snap-align: start;
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}
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#other-target {
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width: 300px;
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height: 300px;
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top: 300px;
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left: 300px;
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background-color: red;
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scroll-snap-align: start;
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}
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.area {
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width: 2000px;
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height: 2000px;
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}
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</style>
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<div id="scroller">
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<div class="area"></div>
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<div id="initial-target"></div>
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<div id="other-target"></div>
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</div>
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<script>
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const initial_target = document.getElementById("initial-target");
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const other_target = document.getElementById("other-target");
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const scroller = document.getElementById("scroller");
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test(() => {
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scroller.removeChild(other_target);
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scroller.scrollTo(0,0);
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assert_equals(scroller.scrollTop, 100);
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assert_equals(scroller.scrollLeft, 100);
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scroller.appendChild(other_target);
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assert_equals(scroller.scrollTop, 100);
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assert_equals(scroller.scrollLeft, 100);
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}, "Adding a new snap area while already snapped should not make the scroller snap to it.");
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</script>
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