path = "fields.components.name".split('.')
json = {'fields': {'components': {'id': '10437', 'name': 'Bug'}}}
for p in path:
json = json[p]
print(json)
The constructor for a React component is called before it is mounted. When implementing the constructor for a React.Component subclass, you should call super(props) before any other statement. Otherwise, this.props will be undefined in the constructor, which can lead to bugs.