Cannot read property ‘slice‘ of undefined

Cannot read property ‘forceUpdate‘ of undefined

Cannot read property ‘prototype‘ of undefined

cannot read property 'p' of undefined

Cannot read property ‘init‘ of undefined

Cannot read property ‘$message‘ of undefined

cannot read property original of undefined

cannot read property 'flex' of undefined

TypeError Cannot read property ‘tapPromise‘ of undefined

解决 Cannot read property ‘key‘ of undefined