React Native return 一个元素到控制台日志

Question

如果我将 new Animated.Value(0) 设置为一个变量，然后将该变量输出到控制台日志，我将得到一个永无止境的列表，如下所示。我如何 return 日志中的任何单个元素？

{ _children: [],
  x: 
   { _children: 
      [ { _children: 
           [ { _children: 
                [ { _props: 
                     { style: [Circular],
                       onStartShouldSetResponder: [Function],
                       onMoveShouldSetResponder: [Function],
                       onStartShouldSetResponderCapture: [Function],
                       onMoveShouldSetResponderCapture: [Function],
                       onResponderGrant: [Function],
                       onResponderReject: [Function],
                       onResponderRelease: [Function],
                       onResponderStart: [Function],
                       onResponderMove: [Function],
                       onResponderEnd: [Function],
                       onResponderTerminate: [Function],
                       onResponderTerminationRequest: [Function],
                       children: 
                        { '$$typeof': {},
                          type: 
                           { [Function]
                             displayName: 'Text',
                             propTypes: [Object],
                             getDefaultProps: [Object],
                             childContextTypes: [Object],
                             contextTypes: [Object],
                             defaultProps: [Object] },
                          key: null,

Answer 1

Animated.Value 是一个具有许多属性的复杂嵌套对象。如果您需要访问单个元素，您可以使用 dot notation 来访问。

Ex:
let obj = new Animated.Value(0);
console.log(obj._value);//assuming _value is a valid property of the object

React Native return 一个元素到控制台日志

React Native return one element to console log

console

ios

console.log

reactjs

react-native