Question

我正在尝试使用zIndex属性控制曲面的分层。它在Chrome中运行得很好，而在Firefox中却没有。在检查DOM之后，我观察到无论我们设置什么，z-index都标记为0。

我在famo.us教程代码@ http://famo.us/university/famous-101/displaying/5/中重现了这个问题。用以下代码替换教程代码。请注意使用相同代码的Chrome和Firefox之间的区别。

var Engine = require('famous/core/Engine');
var Surface = require('famous/core/Surface');

var mainContext = Engine.createContext();

var firstSurface = new Surface({
  size: [200, 400],
  content: 'top',
  properties: {
    color: 'white',
    textAlign: 'center',
    backgroundColor: '#FA5C4F',
    zIndex: 10
  }
});

var secondSurface = new Surface({
  size: [300, 200],
  content: 'bottom',
  properties: {
    color: 'white',
    textAlign: 'center',
    backgroundColor: 'green',
    zIndex: 8
  }
});

mainContext.add(firstSurface);
mainContext.add(secondSurface);

Answer 1

您应该尽量避免使用zIndex属性，因为Famo.us使用3D渲染引擎为您做Z索引。要实现您的目标，请使用StateModifier并在Z方向上平移曲面。

这也适用于FireFox。希望它有所帮助！

var Engine = require('famous/core/Engine');
var Surface = require('famous/core/Surface');
var Transform  = require('famous/core/Transform');
var StateModifier = require('famous/modifiers/StateModifier');

var mainContext = Engine.createContext();

var firstSurface = new Surface({
  size: [200, 400],
  content: 'top',
  properties: {
    color: 'white',
    textAlign: 'center',
    backgroundColor: '#FA5C4F'
  }
});

firstSurface.state = new StateModifier({
    transform: Transform.translate(0,0,10)
});

var secondSurface = new Surface({
  size: [300, 200],
  content: 'bottom',
  properties: {
    color: 'white',
    textAlign: 'center',
    backgroundColor: 'green',
    }
});

secondSurface.state = new StateModifier({
    transform:Transform.translate(0,0,8)
});

mainContext.add(firstSurface.state).add(firstSurface);
mainContext.add(secondSurface.state).add(secondSurface);

famo.us Firefox设置z-index不起作用

1 个答案: