the default level of pixijs drawing increases in turn, as shown in figure classify1,classify2,classify3 is drawn sequentially, and the level increases in turn. Now you want to raise the level of classify2 so that classify3 does not occlude classify2?
. 
you need to install a pixi-display plugin .
app.stage.setChildIndex (classify2,app.stage.getChildIndex (classify3) + 1);
v5 built-in
child.zIndex = 1;
container.sortableChildren = true;
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