code is as follows: why does the whole component (including subcomponents) re-mount when currentItem.isLeaf changes
return React.Children.map([0,1,2,3,4,5,6], (Child, index) => {
const ChildNode = currentItem.isLeaf === "1" ?
AComponent :
BComponent;
return React.createElement(ChildNode,
{
amount: 5,
index,
key: `level-${index}`,
}
)
}) the answer is type is different .
React.createElement is React.createElement (type, props, children) .
React when doing dom diff , the first thing to judge is that type, will render again if the type is inconsistent (remove and then append).
when the subject currentItem.isLeaf changes, the corresponding type changes, so it will be re-rendered.
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