fix(transition-group): not add class v-move to v-show element #7906
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fnlctrl
suggested changes
Apr 7, 2018
| @@ -77,6 +77,7 @@ export default { | |||
| for (let i = 0; i < prevChildren.length; i++) { | |||
| const c: VNode = prevChildren[i] | |||
| c.data.transition = transitionData | |||
| c.data.isDisplayNone = c.elm.style.display === 'none' | |||
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Accessing element.style here in a loop will probably cause serious perf issues due to forced layouts. More info: https://developers.google.com/web/fundamentals/performance/rendering/avoid-large-complex-layouts-and-layout-thrashing
It's probably better to just check for empty rects ( { x: 0, y: 0, width: 0, height: 0, top: 0, right: 0, bottom: 0, left: 0 }) below
| @@ -175,7 +176,7 @@ function applyTranslation (c: VNode) { | |||
| const newPos = c.data.newPos | |||
| const dx = oldPos.left - newPos.left | |||
| const dy = oldPos.top - newPos.top | |||
| if (dx || dy) { | |||
| if (!c.data.isDisplayNone && (dx || dy)) { | |||
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Here you can check if oldPos is empty rect by comparing every field to { x: 0, y: 0, width: 0, height: 0, top: 0, right: 0, bottom: 0, left: 0 }.
pengchongfu
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posva
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What kind of change does this PR introduce? (check at least one)
Does this PR introduce a breaking change? (check one)
If yes, please describe the impact and migration path for existing applications:
The PR fulfills these requirements:
devbranch for v2.x (or to a previous version branch), not themasterbranchfix #xxx[,#xxx], where "xxx" is the issue number)If adding a new feature, the PR's description includes:
Other information:
fix #7879